Dissertations / Theses: 'Embedded control system'

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Huang, Qiang. "Distributed embedded control system." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400230.

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Brattbakken, Inge. "Embedded control system for cybernetic wrist prosthesis." Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10183.

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This master thesis treats the NTNU Rotary Wrist Device(NRWD). The wrist has been developed through several projects and assignments, all derived from Øyvind Stavdahls PhD thesis from 2002, which led to a document of functional specifications. This thesis follows from a specialization project by the writer during autumn 2009. The project looked into the error-prone circuit board that was made to control the NRWD, and came to the conclusion that it could not be used, and that a different approach was necessary. Based on the experience achieved by previous assignments a suggestion for the complete hardware circuitry has been designed. In September 09 the first revision of a protocol for communication in electrical prosthesis were released. The protocol was developed at University of New Brunswick (from here referred to as the UNB-protocol), and is presented as a proposal for a standard communication protocol in the world of electrical prosthesis. This thesis suggests an expansion to this protocol. The expansion is about device profiles, meaning that a device (e.g., a wrist prosthesis, elbow prosthesis, sensory or the like) connecting to an electrical prosthesis system will let the system know what functions it can provide, without the need of updating of the system. A complete functional specification for the NRWD has been written. The specifications are based on those from the originals made by Stavdahl, with revisions in the requirements involving communication. This to make them comply with the UNB-protocol. The protocol is build on a CAN-bus, so in practice this means that all digital communication interfaces except CAN has been removed. In addition there have been added a requirement to prevent the motor from overheating. During the assignment a complete circuit diagram for a new control system has been developed. The circuitry is ready for testing and construction. It has been emphasized to use small components and making the NRWD hardware compatible with the UNB-protocol. There are also suggested some guidelines for the software development.

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Sishuba, S. "An adaptive control system for embedded generators." Thesis, University of Bath, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425676.

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Champy, Adam Samuel. "NEREUS Nemertes : embedded mass spectrometer control system." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33216.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
Includes bibliographical references (leaf 63).
In this thesis, I present Nemertes System, a software suite to control an embedded autonomous mass spectrometer. I first evaluate previous control systems for the hard- ware and evaluate a set of software design goals. The NSystem software builds upon the previous functionalities by offering text-file based scheduling and subroutines, as well as customizable scanning and data reporting. I also implement a new calibration technique that is suitable for auto-calibration while in autonomous operation. Overall, the system is designed to be modular and flexible with the expectation of hardware upgrades and changing needs.
by Adam Samuel Champy.
M.Eng.

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Liang, Kai. "Fault Localization In Embedded Control System Software." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396610077.

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Gustavson, Nathan Zadok. "MODELING AND EMBEDDED CONTROL OF AN INFRARED ELECTROMAGNETIC SUSPENSION SYSTEM." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/736.

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This work describes the modeling, control design, and experimental verification of an electromagnetic suspension system with position feedback using infrared sensors. A nonlinear model is obtained by fitting a first principle analytical model of the system to experimental data. A sliding control strategy is designed using a sliding surface derived from the model to achieve robust stabilization for the closed-loop system. The control is then implemented on an embedded commercial DSP system for experimental verification of the designed control on a laboratory scale electromagnetic suspension system. To compensate for the steady-state tracking error, two modifications are considered. In the first method, a small magnitude integral term is added to the error feedback, equivalently adjusting the reference signal and eliminating the constant bias. In the second method, an integral sliding control is considered, using a higher-order sliding surface, which also eliminates the constant bias. The experimental results show the efficacy of all designed control techniques. The modified techniques, unlike the original design, effectively eliminate the constant position error.

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Andersson, Linda. "Evaluation of HMI Development for Embedded System Control." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-6101.

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Context:The interface development is increasing in complexity and applications with a lot of functionalities that are reliable, understandable and easy to use have to be developed. To be able to compete, the time-to-market has to be short and cost effective. The development process is important and there are a lot of aspects that can be improved. The needs of the development and the knowledge among the developers are key factors. Here code reuse, standardization and the usability of the development tool plays an important role which could have a lot of positive impact on the development process and the quality of the final product. Objectives: A framework for describing important properties for HMI development tools is presented. A representative collection of two development tools are selected, described and based on the experiences from the case study its applicability is mapped to the evaluation framework. Methods: Interviews were made with HMI developers to get information from the field. Following that, a case study of two different development tools were made to highlight the pros and cons of each tool. Results: The properties presented in the evaluation framework are that the toolkit should be open for multiple platforms, accessible for the developer, it should support custom templates, require non-extensive coding knowledge and be reusable. The evaluated frameworks shows that it is hard to meet all the demands. Conclusions: To find a well suited development toolkit is not an easy task. The choice should be made depending on the needs of the HMI applications and the available development resources.
Sammanhang: Human-Machine-Interface (HMI) utvecklingen ökar i komplexitet och behovet av att snabbt producera funktionella, intuitiva och lättanvända applikationer ökar. Det finns flera aspekter som kan öka effektiviteten av utvecklingen och det är viktigt att veta vilka behov som ställs på applikationerna och vilka begränsningar som finns bland utvecklarna. Återanvändning av kod, standardisering och hur användarvänligt utvecklingsverktyget är är viktiga faktorer som påverkar utveckling och slutproduktens kvalité. Mål: Att jämföra olika HMI utvecklingsverktyg baserat på olika kriterier som, efter intervjuer, visade sig var viktiga. Två representativa utvecklingsverktyg har valts för utvärderingen. Metod: Intervjuer hölls för att höra om erfarenheter från HMI-utveckling. Efter det så gjordes en fall studie av två olika utvecklingsverktyg för att utvärdera deras för och nackdelar. Resultat: Intervjuerna resulterade i att flera viktiga kategorier kunde tas fram. De visade att utvecklingsverktyget bör kunna användas för att utveckla applikationer för flera plattformar, vara lättillgängligt för utvecklare, tillåta egna mallar och designer, inte kräva mycket programmering och att komponenter ska kunna återanvändas. Fallstudien visade att det är svårt att till fullo uppfylla alla krav. Slutsats: Det går inte att hitta ett utvecklings verktyg som är bäst i alla situationer. Det är därför viktigt att man tar hänsyn till vad man vill utveckla och vilken kunskap som finns tillgänglig och väljer ett utvecklingsverktyg som passar behoven.

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Troendly, Gregory M., Sheng S. Chen, William G. Nickum, and Michael L. Forman. "Embedded Parallel Processing for Ground System Process Control." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611599.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada
Embedded parallel processing provides unique advantages over sequential and symmetrical processing architectures. During the past decade, the architecture of ground control systems has evolved from utilizing sequential embedded processors to modular parallel, distributed, and/or symmetrical processing. The concept of utilizing embedded parallel processing exhibits key features such as modularity, flexibility, scalability, host independence, non-contention of host resources, and no requirement for an operating system. These key features provide the performance, reliability and efficiency while at the same time lowering costs. Proper utilization of embedded parallel processing on a host computer can provide fault tolerance and can greatly reduce the costs and the requirement of utilizing high-end workstations to perform the same level of real-time processing and computationally intensive tasks.

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Aminifar, Amir. "Analysis, Design, and Optimization of Embedded Control Systems." Doctoral thesis, Linköpings universitet, Programvara och system, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-124319.

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Today, many embedded or cyber-physical systems, e.g., in the automotive domain, comprise several control applications, sharing the same platform. It is well known that such resource sharing leads to complex temporal behaviors that degrades the quality of control, and more importantly, may even jeopardize stability in the worst case, if not properly taken into account. In this thesis, we consider embedded control or cyber-physical systems, where several control applications share the same processing unit. The focus is on the control-scheduling co-design problem, where the controller and scheduling parameters are jointly optimized. The fundamental difference between control applications and traditional embedded applications motivates the need for novel methodologies for the design and optimization of embedded control systems. This thesis is one more step towards correct design and optimization of embedded control systems. Offline and online methodologies for embedded control systems are covered in this thesis. The importance of considering both the expected control performance and stability is discussed and a control-scheduling co-design methodology is proposed to optimize control performance while guaranteeing stability. Orthogonal to this, bandwidth-efficient stabilizing control servers are proposed, which support compositionality, isolation, and resource-efficiency in design and co-design. Finally, we extend the scope of the proposed approach to non-periodic control schemes and address the challenges in sharing the platform with self-triggered controllers. In addition to offline methodologies, a novel online scheduling policy to stabilize control applications is proposed.

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Samii, Soheil. "Quality-Driven Synthesis and Optimization of Embedded Control Systems." Doctoral thesis, Linköpings universitet, Institutionen för datavetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-68641.

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This thesis addresses several synthesis and optimization issues for embedded control systems. Examples of such systems are automotive and avionics systems in which physical processes are controlled by embedded computers through sensor and actuator interfaces. The execution of multiple control applications, spanning several computation and communication components, leads to a complex temporal behavior that affects control quality. The relationship between system timing and control quality is a key issue to consider across the control design and computer implementation phases in an integrated manner. We present such an integrated framework for scheduling, controller synthesis, and quality optimization for distributed embedded control systems. At runtime, an embedded control system may need to adapt to environmental changes that affect its workload and computational capacity. Examples of such changes, which inherently increase the design complexity, are mode changes, component failures, and resource usages of the running control applications. For these three cases, we present trade-offs among control quality, resource usage, and the time complexity of design and runtime algorithms for embedded control systems. The solutions proposed in this thesis have been validated by extensive experiments. The experimental results demonstrate the efficiency and importance of the presented techniques.

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Elmore, Joel D. "Design of an All-In-One Embedded Flight Control System." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3981.

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This thesis describes an all-in-one flight control system (FCS) that was designed for unmanned aerial vehicles (UAVs). The project focuses on the embedded hardware aspect of a stand-alone system with low-cost and reliability in mind.

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Betlach, Radomír. "Řídící systém kogenerační jednotky se vzdáleným dohledem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221150.

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The subject of diploma thesis is to summarize problematic about control of cogeneration unit. There are explained some unexpected situations, which can obtain during operation of unit and necessary process for their safety resolving. Next goal is to design the conception of controlling system for currently used technology. Project describes whole conception of control system and its parts. Physical realization and programming firmware is also described. Last goal of diploma project is to launch operation of innovated cogeneration unit and let it undergo the tests.

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Brugnolli, Mateus Mussi. "Predictive adaptive cruise control in an embedded environment." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-24092018-151311/.

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The development of Advanced Driving Assistance Systems (ADAS) produces comfort and safety through the application of several control theories. One of these systems is the Adaptive Cruise Control (ACC). In this work, a distribution of two control loops of such system is developed for an embedded application to a vehicle. The vehicle model was estimated using the system identification theory. An outer loop control manages the radar data to compute a suitable cruise speed, and an inner loop control aims for the vehicle to reach the cruise speed given a desired performance. For the inner loop, it is used two different approaches of model predictive control: a finite horizon prediction control, known as MPC, and an infinite horizon prediction control, known as IHMPC. Both controllers were embedded in a microcontroller able to communicate directly with the electronic unit of the vehicle. This work validates its controllers using simulations with varying systems and practical experiments with the aid of a dynamometer. Both predictive controllers had a satisfactory performance, providing safety to the passengers.
A inclusão de sistemas avançados para assistência de direção (ADAS) tem beneficiado o conforto e segurança através da aplicação de diversas teorias de controle. Um destes sistemas é o Sistema de Controle de Cruzeiro Adaptativo. Neste trabalho, é usado uma distribuição de duas malhas de controle para uma implementação embarcada em um carro de um Controle de Cruzeiro Adaptativo. O modelo do veículo foi estimado usando a teoria de identificação de sistemas. O controle da malha externa utiliza dados de um radar para calcular uma velocidade de cruzeiro apropriada, enquanto o controle da malha interna busca o acionamento do veículo para atingir a velocidade de cruzeiro com um desempenho desejado. Para a malha interna, é utilizado duas abordagens do controle preditivo baseado em modelo: um controle com horizonte de predição finito, e um controle com horizonte de predição infinito, conhecido como IHMPC. Ambos controladores foram embarcados em um microcontrolador capaz de comunicar diretamente com a unidade eletrônica do veículo. Este trabalho valida estes controladores através de simulações com sistemas variantes e experimentos práticos com o auxílio de um dinamômetro. Ambos controladores preditivos apresentaram desempenho satisfatório, fornecendo segurança para os passageiros.

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Nilsson, Joel. "Embedded Control System for a High Precision Flow Meter." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-49840.

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This degree project has been conducted to study flow meters and develop firmware for EC Instrument’s Reciflow. Flow rate is the volume of a fluid or mass of a substance which passes through a surface per time unit. Conversion can be made between volumetric and mass flow rate if the gas density is known. A market survey showed that Coriolis and thermal mass flow meters and positive displacement (volumetric) flow meters, as the Reciflow, are the most common kinds. The Reciflow consist of a system-on-board and a displacement meter with an optical encoder. The displacement meter is a cylinder with a piston within and valves at the ends. The firmware controls the valves so that the piston can reciprocate. The components of the Reciflow affects the accuracy and it is estimated to ±0;025 % for non-normalized and ±0;2 %for normalized flow. It is measured under normal conditions to be ±0;2 %normalized, relative to a reference. Further experiments must be performed to verify the accuracy and also the precision. The actual measurement of flow rate and volume is made with the encoder: as a difference in time between signal edges and the total number of edges accounted for. Data with random noise is filtered with moving average filters and heuristic methods is used to handle static noise. Serial communication has been implemented for on- and off-board uses. A user can interact with the instrument using either a touchscreen or a terminal.

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Jankowski, Patryk, and Przemysław Szyszkiewicz. "Embedded control system for the Shower of the Future." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-14120.

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The Orbital Systems Company faces the really important issues such a lack of water, sewerage and even public health infrastructure. Its proposition of the Shower of the Future, which is a high-tech purification system that recycles water was inspired by the NASA, spaceship technology with limited sources of water and can be the solution of these problems. Due to the patented technology, which bases on the special filters, it is possible to reuse water. This idea, which is used in the shower, allows on more than 90% savings in water usage and 80% savings in energy, while producing water that is cleaner than average tap water. The company aims to provide this special technology not only to the hotels or hospitals, but also to the regular house to maintain the sustainability issue and even achieve the economic profit. The Shower of the Future is a new technology still in the developing phase. To achieve the goals of the company, in the software part of the system, two important problems have to be solved. First of them is the management issue. At this moment, three different versions of the showers, which differ in hardware and in software are in used. Much more versions adjusted to the place of destination such as hotel or hospital are planned. To manage the codes and integrate all of the possible version of the shower, the company desires to create one compatible software to control all of them. The mechanisms to integrate the codes by managing the configurable parameters of the system and to auto detect the version of the shower are proposed in the work. The second company’s issue is the improvement of the control system. As performed research and tests show, the temperature control in the Shower of the Future is too slow and inaccurate. To solve this problem, the identification process of the model was conducted and the PID controllers for the heater were designed. Due to specific structure of the shower, which introduce delays and disturbances, a single PID controller is not sufficient to maintain the control system. As a final controller, the switching PID controller created from previously designed PID controllers is proposed. Thanks to it, the temperature rising time is reduced 2 times, the overshoot, which was equal to 5 °C does not appear and the steady state error is diminished. Thanks to improvement of the temperature control system, much less water is wasted and much more energy is saved. The Shower of the Future of the Orbital System, which nevertheless needs improvements and more work, is only the first step in creating a new paradigm for daily water usage. The company and its product seriously consider the sustainability and environment aspect.

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Oberndorfer, Thomas. "Embedded vision system for intra-row weeding." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-238.

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Weed control is nowadays a hi-tech discipline. Inter-row weed control is very sophisticated

whereas the intra-row weed control lacks a lot. The aim of this pro ject is to implement

an embedded system of an autonomous vision based intra-row weeding robot. Weed and

crops can be distinguished due to several attributes like colour, shape and context fea-

tures. Using an emebedded system has several advantages. The embedded system is

specialized on video processing and is designed to withstand the needs of outdoor use.

This embedded system is already able to distinguish between weed and crops. The per-

formance of the hardware is very good whereas the software still needs some optimizations.

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Kvist, Johan. "Security and Control System for fluid in a tank." Thesis, Jönköping University, JTH, Computer and Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1011.

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This rapport describes how a security and control system has been developed for moveable diesel tanks. Enormous amounts of diesel in Sweden are stolen every year and the tank that is most vulnerable is the moveable tank in other words tanks that can be moved around with diesel inside.

The report proposes methods how to measure fluid amount in a tank and how to measure if diesel is disappearing from the tank.

The report also describes a tank monitoring system prototype.

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Zaidi, Syed Jamal Haider. "Fast fault isolation for embedded control system in vehicle networks /." Göteborg : Department of Applied Information Technology, IT University of Göteborg, Göteborg University and Chalmers University of Technology, 2006. http://www.ituniv.se/w/index.php?option=com_itu_thesis&Itemid=319.

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Scott, Peter. "An embedded system for image sensor control and date processing." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500486.

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Huo, Weikun, and Lihua Liu. "Embedded web server remote control and communication." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-19035.

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This is a embedded system that designed to achieve the goal of remote control andwireless communication with web page. The embedded web server using uIP whichis TCP/IP stack. Web page are designed using HTML5, JavaScript and CSS languageto format the layout. On the home page, you can see the index of different items.

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Dohmke, Thomas. "Test-driven development of embedded control systems : application in an automotive collision prevention system." Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/239/.

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With test-driven development (TDD) new code is not written until an automated test has failed, and duplications of functions, tests, or simply code fragments are always removed. TDD can lead to a better design and a higher quality of the developed system, but to date it has mainly been applied to the development of traditional software systems such as payroll applications. This thesis describes the novel application of TDD to the development of embedded control systems using an automotive safety system for preventing collisions as an example. The basic prerequisite for test-driven development is the availability of an automated testing framework as tests are executed very often. Such testing frameworks have been developed for nearly all programming languages, but not for the graphical, signal driven language Simulink. Simulink is commonly used in the automotive industry and can be considered as state-of-the-art for the design and development of embedded control systems in the automotive, aerospace and other industries. The thesis therefore introduces a novel automated testing framework for Simulink. This framework forms the basis for the test-driven development process by integrating the analysis, design and testing of embedded control systems into this process. The thesis then shows the application of TDD to a collision prevention system. The system architecture is derived from the requirements of the system and four software components are identiﬁed, which represent problems of particular areas for the realisation of control systems, i.e. logical combinations, experimental problems, mathematical algorithms, and control theory. For each of these problems, a concept to systematically derive test cases from the requirements is presented. Moreover two conventional approaches to design the controller are introduced and compared in terms of their stability and performance. The eﬀectiveness of the collision prevention system is assessed in trials on a driving simulator. These trials show that the system leads to a signiﬁcant reduction of the accident rate for rear-end collisions. In addition, experiments with prototype vehicles on test tracks and ﬁeld tests are presented to verify the system’s functional requirements within a system testing approach. Finally, the new test-driven development process for embedded control systems is evaluated in comparison to traditional development processes.

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Deshmukh, Pallavi Prafulla. "A Hands-on Modular Laboratory Environment to Foster Learning in Control System Security." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71755.

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Cyber-Physical Systems (CPSes) form the core of Industrial Control Systems (ICS) and critical infrastructures. These systems use computers to control and monitor physical processes in many critical industries including aviation, industrial automation, transportation, communications, waste treatment, and power systems. Increasingly, these systems are connected with corporate networks and the Internet, making them susceptible to risks similar to traditional computing systems experiencing cyber-attacks on a conventional IT network. Furthermore, recent attacks like the Stuxnet worm have demonstrated the weaknesses of CPS security, which has gained much attention in the research community to develop more effective security mechanisms. While this remains an important topic of research, often CPS security is not given much attention in undergraduate programs. There can be a significant disconnect between control system engineers with CPS engineering skills and network engineers with an IT background. This thesis describes hands-on courseware to help students bridge this gap. This courseware incorporates cyber-physical security concepts into effective learning modules that highlight real-world technical issues. A modular learning approach helps students understand CPS architectures and their vulnerabilities to cyber-attacks via experiential learning, and acquire practical skills through actively participating in the hands-on exercises. The ultimate goal of these lab modules is to show how an adversary would break into a conventional CPS system by exploiting various network protocols and security measures implemented in the system. A mock testbed environment is created using commercial-off-the-shelf hardware to address the unique aspects of a CPS, and serve as a cybersecurity trainer for students from control system or IT backgrounds. The modular nature of this courseware, which uses an economical and easily replicable hardware testbed, make this experience uniquely available as an adjunct to a conventional embedded system, control system design, or cybersecurity courses. To assess the impact of this courseware, an evaluation survey is developed to measure the understanding of the unique aspects of CPS security addressed. These modules leverage the existing academic subjects, help students understand the sequence of steps taken by adversaries, and serve to bridge theory and practice.
Master of Science

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Ward, Garrett. "Design of a Small Form-Factor Flight Control System." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3448.

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This work outlines a design for a small form-factor flight control system designed to fly in a wide variety of airframes. The system was designed with future expansion in mind while providing a complete, all-in-one solution to meet present needs. This system as presented meets most needs while remaining relatively low cost. It has a completely integrated IMU solution as well as on- board GPS. It is capable of basic waypoint navigation. This solution was testing using software and hardware-in-the-loop simulation which proved its functionality.

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Althaus, Joseph H. "An Embedded Nonlinear Control Implementation for a Hovering Small Unmanned Aerial System." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275530221.

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Wang, Ning. "Design of a real-time, embedded weed-detection and spray-control system /." Search for this dissertation online, 2002. http://wwwlib.umi.com/cr/ksu/main.

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Persson, Jesper, and Kristoffer Dahl. "Control and Monitoring of a BTES-System." Thesis, Högskolan i Halmstad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30304.

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Termisk energi som solfångare producerar kan lagras i Borehole Thermal Energy Storage, BTES, när efterfrågan är låg, för att sedan användas när efterfrågan är hög. Målet med detta examensarbete är att utveckla en skalbar systemarkitektur för styrning och monitorering av en BTES prototyp, där ringarna som borrhålen utgör är indelade i olika temperaturhierarkier. De ringar som ligger närmare centrum av borrhålen har högre temperaturhierarki än de som ligger längre ut. Driftinformation från systemet ska kunna följas på en webbplats och temperaturdata från systemet ska sparas undan för lagring. Datakommunikationen består av en One-Wire buss som innehåller temperatursensorer och ett CAN-buss system för datakommunikation mellan sensor/aktuator-noder och server-nod. Utifrån sensordata bestäms reglering av ventiler. Driftinformation lagras i en databas och från denna databas presenteras informationen på en hemsida. Hemsidan innehåller en överblick av brunnparken där temperaturen i varje brunn kan utläsas. Regleralgoritmen uppfyller den sökta temperaturhierarkin där de högsta temperaturerna ska vara i centrum av brunnparken. Prototypen fungerar som en utvecklingsplattform och demonstrerande prototyp.
Thermal energy produced from solar collectors can be stored in Borehole Thermal Energy Storage, BTES, when demand is low for later usage when demand is high. The aim of this thesis is to develop a scalable system architecture for control and monitoring of a BTES prototype.The BTES prototype consist of 13 boreholes configured in a hierarchically manner in two circles and one core. The core is of the highest priority. The operational information is displayed on a website and stored in a database.The data communication consist of two One-wire buses and one CAN bus. The temperature sensors are connected to the One-Wire buses. The CAN bus consist of sensor/actuator nodes and a server node. Based on sensor data, a control loop configures the actuators. Operational data is stored in a database and visually presented on a website. The website displays an overview of all the boreholes where all of the sensors data can be read. The control algorithm runs successfully according to its hierarchically priorities. The prototype works as a developement platform and a demonstrating prototype.

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Chen, Dejiu. "Systems Modeling and Modularity Assessment for Embedded Computer Control Applications." Doctoral thesis, KTH, Maskinkonstruktion, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3792.

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AbstractThe development of embedded computer control systems(ECS) requires a synergetic integration of heterogeneoustechnologies and multiple engineering disciplines. Withincreasing amount of functionalities and expectations for highproduct qualities, short time-to-market, and low cost, thesuccess of complexity control and built-in flexibility turn outto be one of the major competitive edges for many ECS products.For this reason, modeling and modularity assessment constitutetwo critical subjects of ECS engineering.In the development ofECS, model-based design is currently being exploited in most ofthe sub-systems engineering activities. However, the lack ofsupport for formalization and systematization associated withthe overall systems modeling leads to problems incomprehension, cross-domain communication, and integration oftechnologies and engineering activities. In particular, designchanges and exploitation of "components" are often risky due tothe inability to characterize components' properties and theirsystem-wide contexts. Furthermore, the lack of engineeringtheories for modularity assessment in the context of ECS makesit difficult to identify parameters of concern and to performearly system optimization. This thesis aims to provide a more complete basis for theengineering of ECS in the areas of systems modeling andmodularization. It provides solution domain models for embeddedcomputer control systems and the software subsystems. Thesemeta-models describe the key system aspects, design levels,components, component properties and relationships with ECSspecific semantics. By constituting the common basis forabstracting and relating different concerns, these models willalso help to provide better support for obtaining holisticsystem views and for incorporating useful technologies fromother engineering and research communities such as to improvethe process and to perform system optimization. Further, amodeling framework is derived, aiming to provide a perspectiveon the modeling aspect of ECS development and to codifyimportant modeling concepts and patterns. In order to extendthe scope of engineering analysis to cover flexibility relatedattributes and multi-attribute tradeoffs, this thesis alsoprovides a metrics system for quantifying componentdependencies that are inherent in the functional solutions.Such dependencies are considered as the key factors affectingcomplexity control, concurrent engineering, and flexibility.The metrics system targets early system-level design and takesinto account several domain specific features such asreplication and timing accuracy. Keywords:Domain-Specific Architectures, Model-basedSystem Design, Software Modularization and Components, QualityMetrics.
QC 20100524

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Sullivan, Anthony John. "Distributed control applications using local area networks: a LAN based power control system at Rhodes University." Thesis, Rhodes University, 2002. http://hdl.handle.net/10962/d1005246.

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This thesis describes the design and development of both the hardware and software of an embedded, distributed control system using a LAN infrastructure for communication between nodes. The primary application of this system is for power monitoring and control at Rhodes University. Both the hardware and software have been developed to provide a modular and scalable system capable of growing and adapting to meet the changing demands placed on it. The software includes a custom written Internet Protocol stack for use in the embedded environment, with a small code footprint and low processing overheads. There is also Linux-based control software, which includes a web-based device management interface and graphical output. Problems specific to the application are discussed as well as their solutions, with particular attention to the constraints of an embedded system.

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Ibarra, Alvarado Erendira Ireri. "System modelling to support safety analysis in the design of embedded software control systems in automobiles." Thesis, University of Sussex, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439634.

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Khaleghi, Kerahroudi Shadi. "Development of novel operational stability control systems for embedded high voltage DC links." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/12566.

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In order to achieve the ambitious decarbonisation targets of the UK government, up to 30GW of wind generation could be connected to the GB transmission system by 2020. The challenges imposed when incorporating this volume of renewable energy are significant, introducing new technical challenges for National Grid as the system operator for the Great Britain transmission system. The majority of this new renewable generation will be connecting in Scotland and offshore in the UK as a whole. This results in greater uncertainty in the system from significant changes to the direction and volume of power flows across the network. In addition this implies a higher power transfer capacity requirement on the AC transmission lines, which are currently stability-limited, connecting SPT (Scottish Power Transmission) and National Grid networks. The required power transfer capability increases every year because of the large-scale increase in wind generation. Therefore, there is insufficient transmission capacity in the existing network to accommodate the increasing power transfer without constraining output of some generation plants. A range of new state of art technologies such as embedded HVDC link and Thyristor Controlled Series Compensation (TCSC) are planned to be added to the GB system in order to provide additional capacity and consequently facilitate the integration of large-scale renewable generation. It is, therefore essential that National Grid explores new ways of operating the transmission network and new devices to gain additional benefit from the HVDC link and the TCSC capabilities with regard to the system stability enhancement. This thesis investigates the effectiveness of the HVDC link and the TCSC with a view to system stability enhancement. A hierarchical stability control system to enhance the stability limit and achieve the best transient and dynamic performance using the HVDC link and the TCSCs as actuators in the feedback control system is proposed. In addition, a stability control system, using a robust and stabilising Sample Regulator multivariable control design method , to guarantee the system robustness and stability is proposed and designed. The performance and capability of the designed controller in co-ordinated control of the forthcoming power flow control devices are demonstrated on benchmark networks as well as full dynamic models of the GB transmission system using various study cases. Finally, the effectiveness of the West Coast HVDC link in improving the inter-area oscillation damping is presented using the developed model of the future GB transmission system.

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Josefsson, Alexandra. "Modeling an Embedded Climate System Using Machine Learning." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290676.

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Recent advancements in processing power, storage capabilities, and availability of data, has led to improvements in many applications through the use of machine learning. Using machine learning in control systems was first suggested in the 1990s, but is more recently being implemented. In this thesis, an embedded climate system, which is a type of control system, will be looked at. The ways in which machine learning can be used to replicate portions of the climate system is looked at. Deep Belief Networks are the machine learning models of choice. Firstly, the functionality of a PID controller is replicated using a Deep Belief Network. Then, the functionality of a more complex control path is replicated. The performance of the Deep Belief Networks are evaluated at how they compare to the original control portions, and the performance in hardware. It is found that the Deep Belief Network can quite accurately replicate the behaviour of a PID controller, whilst the performance is worse for the more complex control path. It was seen that the use of delays in input features gave better results than without. A climate system with a Deep Belief Network was also loaded onto hardware. The minimum requirements of memory usage and CPU usage were met. However, the CPU usage was greatly affected, and if this was to be used in practice, work should be done to decrease it.
Många applikationer har förbättras genom användningen av maskininlärning. Maskininlärning för reglersystem föreslogs redan på 1990-talet och har nu börjat tillämpas, eftersom processorkraft, lagringsmöjligheter och tillgänglighet till rådata ökat. I detta examensarbete användes ett inbäddat klimatsystem, som är en typ av reglersystem. Maskininlärningsmodellen Deep Belief Network användes för att undersöka hur delar av klimatsystemet skulle kunna återskapas. Först återskapades funktionaliteten hos en PID-regulator och sedan funktionaliteten av en mer komplex del av reglersystemet Prestandan hos nätverken utvärderades i jämförelse med prestandan i de ursprungliga kontrolldelarna och hårdvaran. Det visade sig att Deep Belief Network utmärkt kunde replikera PID-regulatorns beteende, medan prestandan var lägre för den komplexa delen av reglersystemet. Användningen av fördröjningar i indata till nätverken gav bättre resultat än utan. Ett klimatsystem med ett Deep Belief Network laddades också över på hårdvaran. Minimikrav för minnesanvändning och CPU- användning var uppfyllda, men CPU- användningen påverkades kraftigt. Detta gör, att om maskininlärning ska kunna användas i verkligheten, bör CPU-användningen minskas.

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Hedfors, Sara. "Architecture for Diagnostic Platform." Thesis, Uppsala University, Department of Information Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-126685.

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In order to maximize operating time of an industrial machine and minimize stand-by time, service time and operating costs, a diagnostic system can be a useful tool. Diagnostic systems employ information already available in a machine’s control system (such as control signals, system state, sensor readings and so forth) to perform intelligent fault detection and localisation, and predict future faults and service needs.

CC Systems develops advanced electronics and control systems for industrial machines and vehicles operating in rough environments. One of their products is a diagnostic platform called Diagnostic Runtime Engine (DRE), supplying the customer with a tool for building a diagnostic system. The platform offers supervision of the control system. Actions are performed when it detects a possible fault or indication of a potential future fault. An action could be for example the creation of an alarm.

The DRE, as designed today, only works together with a control system running in an environment called CoDeSys. In this master thesis a new architecture of the platform is presented, with the objective to make the platform compatible with an arbitrary control system. A prototype is implemented to prove the concept of the suggested architecture model. A number of different standard diagnostic blocks, used for building the diagnostic system, are also suggested with the objective to make it easier for the user to employ the DRE. A proposition of how development with the diagnostic platform can proceed beyond this thesis is also presented.

För att maximera drifttid hos en industriell maskin och minimera driftskostnader samt standby- och service-tid, kan ett diagnostiksystem användas. Ett sådant system använder sig av information som redan finns tillgänglig i maskinens styrsystem (så som styrsignaler, tillstånd, sensorvärden och så vidare) för att utföra feldetektering och fellokalisering samt analys av möjliga framtida feltillstånd och servicebehov.

CC Systems utvecklar avancerade elektronikkomponenter och styrsystem för industriella maskiner och fordon. En av deras produkter är en diagnostikplattform, Diagnostic Runtime Engine (DRE), som erbjuder ett verktyg för att bygga upp ett diagnostiksystem. Plattformen möjliggör övervakning av styrsystemet, och detektion av ett nuvarande feltillstånd eller möjligt framtida feltillstånd leder till att en handling utförs. En handling kan till exempel vara att ett alarm skapas.

Diagnostikplattformen, som den är gjord idag, fungerar bara tillsammans med ett styrsystem som är implementerat i utvecklingsmiljön CoDeSys. I detta examensarbete presenteras en ny arkitektur på plattformen som möjliggör användande tillsammans med ett godtyckligt styrsystem. En prototyp är implementerad för att visa att den föreslagna arkitekturmodellen fungerar i praktiken. Dessutom är ett antal standard-diagnostikblock, som används då ett diagnostiksystem byggs upp, föreslagna. Standardblocken har till syfte att underlätta användandet av diagnostikplattformen. Ett förslag för hur DRE kan byggas om och utvecklas i framtiden är också presenterat.

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Zare, Abbas. "Implementation of Embedded Control System for Electric Drives based on Automatic Code Generation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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This project focuses on an improved methodology for embedded software development. MATLAB and Simulink allow the user to simplify control algorithm development for specific applications and load the implemented algorithms into the embedded target. MATLAB allows constructing the control algorithms and its interface to different Digital Signal Processor (DSP) modules, such as A/D or D/A conversions and ePWM, as a block scheme in Simulink library. For example, Texas Instrument (TI) Company in collaboration with MATLAB allows the user to create a link between different DSPs of the TI and MATLAB software via the Simulink environment in order to generate automatically embedded C code adopted for different embedded targets. The concepts of rapid prototyping and digital control technique in this project are realized based on using the Piccolo TMSF28035 TI C2000 MCU in conjunction with the Matlab/Simulink software based on an Integrated Development Environment (IDE) such as Code Composer Studio. Matlab/Simulink environment is used for the design, optimization, and off-line simulations of the model and power electronic circuits. The Real-Time Workshop converts the Simulink model to C or C++ programming code. Subsequently, the executable C code is automatically compiled to the assembly language for the TI C2000 MCUs, assembled, link-edited, and downloaded. For the closed-loop controller, digital PI control is implemented and the values of the PI are defined by the pole placement method. Once the control scheme is built in Simulink, by automatic code generation capability of the MATLAB, the algorithm model is loaded into the DSP and runs the generated program.

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Ishak, Mohamad Khairi. "The development of an ethernet based, embedded, networked real-time control communication system." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.682362.

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Deterministic control communication is a backbone of many novel complex (robotic) engineering systems, e.g. HUBO uses CAN. The aim of this research , is to develop an approach for cheap and deterministic control communication using Ethernet. The objectives require a reliable data-transfer service between the various units for sensing and actuation. The key discriminator to assess reliability is determinism, (e.g. causality and well defined order of communication events in time and transaction). The strategy to support this at the network level, include investigations of approaches based on time-triggering, arbitration and guarantees of latency. A half-duplex Ethernet network populated with a small/medium number of Media Access Controllers (MACs) is used for timed real-time communication. A time-triggered approach is used, i.e. a synchronization signal triggers the sending of data from each Ethernet data transmitting unit. Moreover, data packets are sent at well defined times after each trigger instance to reduce collisions. Collisions mainly occur due to jitter of the transmission system, so that arbitration (similar to CANopen) is necessary. A Linear Backoff scheme is used in comparison to the Binary Exponential Backoff scheme. Matlab and Field Programmable Gate Array (FPGA) technology, i.e. Xilinx XC3S500E from the Spartan-3E family, are used to simulate and implement the practical test of the Ethernet communication strategy. Practical comparisons to a time division multiple access scheme for the Matlab simulation environment and the FPGA based experimental setup are carried out. Furthermore, a theoretical analysis of the communication approach is provided. In particular the advantage of . the communication unit specific minimal backoff time using a Nlarkov model is shown.

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Rafiliu, Sergiu. "Stability of Adaptive Distributed Real-TimeSystems with Dynamic Resource Management." Doctoral thesis, Linköpings universitet, Programvara och system, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-98721.

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Today's embedded distributed real-time systems, are exposed to large variations in resource usage due to complex software applications, sophisticated hardware platforms, and the impact of their run-time environment. As eciency becomes more important, the applications running on these systems are extended with on-line resource managers whose job is to adapt the system in the face of such variations. Distributed systems are often heterogeneous, meaning that the hardware platform consists of computing nodes with dierent performance, operating systems, and scheduling policies, linked through one or more networks using dierent protocols. In this thesis we explore whether resource managers used in such distributed embedded systems are stable, meaning that the system's resource usage is controlled under all possible run-time scenarios. Stability implies a bounded worst-case behavior of the system and can be linked with classic real-time systems' properties such as bounded response times for the software applications. In the case of distributed systems, the stability problem is particularly hard because software applications distributed over the dierent resources generate complex, cyclic dependencies between the resources, that need to be taken into account. In this thesis we develop a detailed mathematical model of an adaptive, distributed real-time system and we derive conditions that, if satised, guarantee its stability.

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Ross, Mark. "An embedded control and display system for a laser-based mid-infrared hyperspectral imager /." St Andrews, 2008. http://hdl.handle.net/10023/731.

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Klee, Andrew. "DEVELOPMENT OF A MOTOR SPEED CONTROL SYSTEM USING MATLAB AND SIMULINK, IMPLEMENTED WITH A DIGITAL SIGNAL PROCESSOR." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2870.

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This thesis describes an improved methodology for embedded software development. MATLAB and Simulink allow engineers to simplify algorithm development and avoid duplication of effort in deploying these algorithms to the end hardware. Special new hardware targeting capabilities of MATLAB and Simulink are described in detail. A motor control system design served to demonstrate the efficacy of this new method. Initial data was collected to help model the motor in Simulink. This allowed for the design of the open and closed loop control systems. The designed system was very effective, with good response and no steady state error. The entire design process and deployment to a digital signal processor took significantly less time and effort than other typical methods. The results of the control system design as well as the details of these development improvements are described.
M.S.Cp.E.
Department of Electrical and Computer Engineering
Engineering and Computer Science
Computer Engineering

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Sarban, Singh Ranjit Singh. "A design scheme of energy management, control, optimisation system for hybrid solar-wind and battery energy storages system." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/13788.

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Hybrid renewable energy system was introduced to improve the individual renewable energy power system’s productivity and operation-ability. This circumstance has led towards an extensive technological study and analysis on the hybrid renewable energy system. The extensive technological study is conducted using many different approaches, but in this research the linear programming, artificial intelligence and smart grid approaches are studied. This thesis proposed a complete hardware system development, implementation and construction of real-time DC Hybrid Renewable Energy System for solar-wind-battery energy source integrated with grid network support. The proposed real-time DC HRES hardware system adopts the hybrid renewable energy system concept which is composed of solar photovoltaic, wind energy system, battery energy storage system and grid network support. The real-time DC HRES hardware system research work is divided into three stages. Stage 1 involves modelling and simulation of the proposed system using MATLAB Simulink/Stateflow software. During this stage, system’s methodological design and development is emphasised. The obtained results are considered as fundamental finding to design, develop, integrate, implement and construct the real-time DC HRES hardware system. Stage II is designing and developing the electronic circuits for the real-time DC HRES hardware system using PROTEUS software. Real time simulation is performed on the electronic circuits to study and analyse the circuit’s behaviour. This stage also involves embedded software application development for the microcontroller PIC16F877A. Thus, continuous dynamic decision-making algorithm is developed and incorporated into microcontroller PIC16F877A. Next, electronic circuits and continuous dynamic decision-making algorithm are integrated with the microcontroller PIC16F877A as a real-time DC HRES hardware system to perform real time simulation. The real-time DC HRES hardware system simulation results are studied, analysed and compared with the results obtained in Stage 1. Any indifference between the obtained results in Stage 1 and Stage 2 are analysed and necessary changes are made. Stage 3 involves integrating, implementation and construction of real-time DC HRES. The continuous dynamic decision-making algorithm is also incorporated into the real microcontroller PCI16F877A development board. Real-time DC HRES’s experimental results have successfully demonstrated the system’s ability to perform supervision, coordination, management and control of all the available energy sources with lease dependency on the grid network. The obtained results demonstrated the energy management and optimisation of the available energy sources as primary power source deliver.

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Arifianto, Ony. "A Low-Cost Unmanned Aerial Vehicle Research Platform: Development, Modeling and Advanced Control Implementation." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/49301.

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This dissertation describes the development and modeling of a low-cost, open source, and reliable small fixed-wing unmanned aerial vehicle (UAV) for advanced control implementation. The platform is mostly constructed of low-cost commercial off-the-shelf (COTS) components. The only non-COTS components are the airdata probes which are manufactured and calibrated in-house, following a procedure provided herein. The airframe used is the commercially available radio-controlled 6-foot Telemaster airplane from Hobby Express. The airplane is chosen mainly for its adequately spacious fuselage and for being reasonably stable and sufficiently agile. One noteworthy feature of this platform is the use of two separate low-cost open source onboard computers for handling the data management/hardware interfacing and control computation. Specifically, the single board computer, Gumstix Overo Fire, is used to execute the control algorithms, whereas the autopilot, Ardupilot Mega, is mostly used to interface the Overo computer with the sensors and actuators. The platform supports multi-vehicle operations through the use of a radio modem that enables multi-point communications. As the goal of the development of this platform is to implement rigorous control algorithms for real-time trajectory tracking and distributed control, it is important to derive an appropriate flight dynamic model of the platform, based on which the controllers will be synthesized. For that matter, reasonably accurate models of the vehicle, servo motors and propulsion system are developed. Namely, the output error method is used to estimate the longitudinal and lateral-directional aerodynamic parameters from flight test data. The moments of inertia of the platform are determined using the simple pendulum test method, and the frequency response of each servomotor is also obtained experimentally. The Javaprop applet is used to obtain lookup tables relating airspeed to propeller thrust at constant throttle settings. Control systems are also designed for the regulation of this UAV along real-time trajectories. The reference trajectories are generated in real-time from a library of pre-specified motion primitives and hence are not known a priori. Two concatenated primitive trajectories are considered: one formed from seven primitives exhibiting a figure-8 geometric path and another composed of a Split-S maneuver that settles into a level-turn trim trajectory. Switched control systems stemming from l2-induced norm synthesis approaches are designed for discrete-time linearized models of the nonlinear UAV system. These controllers are analyzed based on simulations in a realistic operational environment and are further implemented on the physical UAV. The simulations and flight tests demonstrate that switched controllers, which take into account the effects of switching between constituent sub-controllers, manage to closely track the considered trajectories despite the various modeling uncertainties, exogenous disturbances and measurement noise. These switched controllers are composed of discrete-time linear sub-controllers designed separately for a subset of the pre-specified primitives, with the uncertain initial conditions, that arise when switching between primitives, incorporated into the control design.
Ph. D.

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40

Yang, Chen-Ta. "Microprocessor embedded fuzzy control system." 1992. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611304181.

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Wang, Yung-chun, and 王永俊. "Design of Embedded Speech Control System." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/40625111375319202865.

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碩士
國立中正大學
資訊工程所
93
Along with the technical development in computer and electronics, home appliances have become smarter and had increasingly more controllable features. Therefore the remote controller for these appliances usually have more buttons; and since many appliances use a remote controller, there will be many more buttons in a house. So, people might need an embedded speech control system to replace the controllers and many buttons. To make the engine Chinese recognizable, a Chinese speech corpus and a Chinese phonetic alphabet are used to train the recognition engine, and we found that the database size increases exponentially with the number of recognizable phones. In addition, we also found that a bottleneck in performance occurs due to the Fast Fourier Transform (FFT) in the feature extraction. Therefore, we analyze the storage capacity and performance of the speech recognition procedure. The most important thing in speeding up the process of the speech recognition is not to affect the accuracy and the recognition rate. In this research, we have found that by using DSP to improve the FFT, we can raise the performance of the feature extraction by tenfold without affecting the accuracy of the system. But on the other way, the recognition is not a compute-intensive operation. It is difficult to speed up by the DSP. So, we propose a practical architecture which has features of unlimit storage capacity, speaker-independence, and fast reaction.

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Chang, Li-Teng, and 張儷騰. "Embedded Control System for Unmanned Helicopter." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/03170792339845253457.

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碩士
元智大學
機械工程學系
96
In this paper we were designed the avionics for UAH, and combined PIC controller with PC104 single board computer. The PIC controller was developed by C code. The PIC controller has integrated all of UAH sensors, and controlled RC servomotors. The single board computer was developed by Matlab xPC Target and Matlab Simulink. The single board computer has designed controller for UAH. The PIC controller had include for the following functions. - 6 channels PWM R/C servo output; - R/C Receiver signal decoding;. - Integrated IMU consisting of 3-axis gyro and 3-axis accelerometer; - Measurement of the rotor speed; - Integrated ultrasonic distance sensor. In this paper we complete a PI controller for the rotor speed with anti-windup, and reduce the rotor speed error to from 1.5 rps under open loop control to 0.4 rps. The controller can switch between manual and automatic control modes with bumpless transfer. The controller also includes an IMU which combines 3-axis gyro with 3-axis accelerometer to estimate the attitudinal angle of the UAH with complementary filter approach.

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Tai, Te-jen, and 戴德仁. "Embedded Smart Home Access Control System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/k269rd.

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碩士
開南大學
資訊學院碩士在職專班
106
This paper utilizes the Raspberry Pi of the IOT (Internet of things) device to develop a low-cost embedded face recognition system and build back-end service, Django Python Web as a management interface for monitoring data. Users can use mobile devices or personal computers to query data in a web-browsing manner. There are two kind of architectures. The first type of architecture must check by RFID reader at first to confirm the identity of the person. Then dynamic captured face picture directly compared to the whole face database. The second one that does not need RFID check, just dynamically captures face picture by the Web Camera. Then the human face be trained, the model is created and the classifier is created. Finally, it processes the face recognition and the alignment similarity. The two flows of architecture that got the final face recognition results will be use as the basis for access control. In the experiment, this paper uses the Adaboost algorithm to locate the face and the SVM for face recognition classifier. The experimental results show that if the light is sufficient and under positive face conditions. The average identification rate can achieved approximately at 90.4%. Keyword: IOT、Face Recognition、Raspberry Pi、OpenCV

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Wang, Hao-Hsuan, and 王晧軒. "Curtain Control Based on Embedded System." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/bhr2d3.

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碩士
國立臺灣科技大學
電子工程系
107
With new technological advances, the application of automatic control has become more and more extensive. Especially the rapid development of computer technology in recent years, people use automatic control technology in life or work. For example, automatic control technology is used to replace low-tech works in factories. The automatic control can receive the signal of external environment through the sensors to do different corresponding actions. Such as automatic induction lamps and other products, through the automatic control to save a lot of operations. It will make our life more convenient. This thesis uses the automatic control technology to design this curtain control system. This thesis is based on embedded system, which uses automatic control to achieve the function of automatically drawing curtains. This system can automatically draw the curtains when the outside light is strong or noisy, and can set different thresholds according to different environments. The threshold can be changed through the app, so that users in different environments can make some personal own settings, which is more intelligent than traditional curtains.

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Huang, Chi-Shao, and 黃啟哨. "Development of Embedded System Based Remote Control System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/23812839262764854564.

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碩士
朝陽科技大學
資訊工程系碩士班
98
An embedded system based scheduled and remote control system was successful developed. This system was built on an ARM9 based embedded system, which used the S3C2410 microprocessor. This system contains 12 output control pins, one IR output channel and one IR input channel. The 12 output channels can control 12 devices such as appliances or electric lights. The IR port can control the IR based home appliances such as TV, air conditioner. The system can learn the IR control code from the original remote controller of appliance and stored in embedded system. All setting can be down on the web based management interface. The user also control and monitor the system through the GSM mobile. The system was constructed as a LED indicating board, GSM module, IR learning and emitting module, and the embedded system main board. The embedded system has a Linux 2.6 and a mini_httpd web server porting on it.

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Tsai, Tsung-Hsien, and 蔡宗憲. "Force Control Using Embedded System and PC Base System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/17805511137350775544.

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碩士
國立成功大學
機械工程學系碩博士班
95
Force control is one of the most important and fundamental tasks for robotic applications. The purpose of the thesis is to establish the force control methods for three applications. Two of them are polishing force control for both point contact and line contact mechanisms. The third one is a torque measurement system for air actuators. In order to get good control results, we add dynamic characteristics and control theory into the control programs. In this study, we use a motion control card (EPCIO) to control the line contact force mechanism and the torque measurement system. The control system belongs to PC based. In the point contact force mechanism, we use an embedded system for that system. A DSP chip serves as a main computer for the control algorithm. The data flow is managed by a CPLD and transferred to PC via a USB2.0 interface. Since PC with Win/TEL lacks of hardware real time capability, the only way to improve the control efficiency is to replace a PC by an embedded system. The results of these three control systems are presented.

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SYU, YAO-SHENG, and 許耀升. "Embedded Wheelchair Control System wit Reactive Navigations." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/7d98w3.

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碩士
國立臺灣科技大學
電機工程系
99
This study proposes a touch interface for controlling a human-centered intelligent wheelchair. The proposed solution is developed based on the XScale embedded platform and a real-time embedded Linux operation system.The touch interface is a touch panel which performs similar joystick manipulations while it provides convenient wheelchair control interface, as well as offers useful wheelchair status. In addition, reactive navigation techniques are also developed by combining with the obstacle information to perform collision free navigations. The obstacle detection sensor uses a laser range finder and the reactive navigation uses the artificial potential field approach. Especially, collections of obstacle information and realizations of APF navigations are both implemented as device drivers in the kernel space to improve real time performance, as well as to reduce computational loads of graphical user interface in the user space. Consequently, the proposed embedded touch wheelchair control architecture has the advantages of real-time performance, simple architecture, high reliability and safety. The device drivers and GUI are all developed as open source codes, and they are easy for integrations. Finally, a touch wheelchair prototype is produced in our laboratory for functional validations of device drivers and performance evaluations of reactive navigations.

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48

Lai, Yi-Fan, and 賴依凡. "A Research into Embedded Home Control System." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/87304223867512013155.

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碩士
國立彰化師範大學
電機工程學系
94
This paper presents the development of a system for controlling home electrical appliance over the Internet. This system is accomplished by embedded boards, radio transmitters and receivers, microprocessors, switching circuits, AD converter and Hall sensor. This system mainly consists of two subsystems: home appliance control system and load signal retrieval. In the home appliance control system, we combine radio with WAP (Wireless Application Protocol) technologies for controlling home appliances such as lamp or electric fan. In load signal retrieval system, the voltage and current are intercepted of home appliance. The user can be understanding power of home appliance.

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49

Yang, Ming-Yuan, and 楊明原. "Embedded Remote Control and Wireless VoIP System." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/36845724640319798802.

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碩士
國立中正大學
光機電整合工程所
93
The rapid development of wireless network is becoming available to many of us in daily life. It becomes an indispensable technology of raising the additional values of these electronic wireless products. As such, the research and the development of various mobile handset devices are being respected nowadays for creating the future wireless digital generation. This thesis discusses the research and development of the remote control and IP phone. The research is mainly based on remote control by using the Internet to devise remote control from far distance terminals. Furthermore, it also covers the subject about Session Initiation Protocol to develop IP phone in correspondence. In relation to the two studies mentioned above that are utilized in the development of the embedded system, the discussion of the system can be divided into two categories. First, the Wireless Handset provides users the ability to operate other devices, including the service function of remote control over electric equipments and IP phones. Second, the Control Node is the base setup for the operation of the technology, which is the far distance terminals remote control. Through both these technologies, it allows the development of a new system to control digital devices and the availability of wireless web phone.

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50

Liu, Wen-Yu, and 劉玟佑. "Embedded control system interface design and application." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/19452452371406223922.

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碩士
國立臺灣海洋大學
電機工程學系
92
The thesis focuses on an embedded DC motor control system which provides standard interfaces for issuing command and data acquisition. The interfaces include USB, TCP/IP network and an embedded real-time OS. The implementation of the USB interface is accomplished by the Philips PDIUSBD12 development board. The Implementation of the network interface is completed by an 8051 Base MPU and a Crystal/Cirrus chip. The real-time OS adopts MicroC/OS-II written by Jean J. Labrosse. Concerning the USB, we investigated the device’s firmware coding and application software coding. Users can command the motor and get the response of the motor through our USB interface. For the network interface part, we finished TCP/IP protocol firmware coding and constructed a web server that lets users communicate with motors through internet. In real-time OS, we analyzed and decomposed the whole DC motor control program into several efficient tasks. And we compare the differences between the motor control responses with and without OS.

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Dissertations / Theses on the topic 'Embedded control system'

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