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Автор: Grafiati

Опубліковано: 11 березня 2023

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Статті в журналах з теми "Embedded controllers design"

Majumdar, Jharna, Sudip C Gupta, and B. Prassanna Prasath. "Linear and Non-Linear Control Design of Skid Steer Mobile Robot on an Embedded." IAES International Journal of Robotics and Automation (IJRA) 7, no. 3 (September 1, 2018): 185. http://dx.doi.org/10.11591/ijra.v7i3.pp185-196.

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A detailed approach for a linear Proportional-Integral-Derivative (PID) controller and a non-linear controller - Linear Quadratic Regulator (LQR) is discussed in this paper. By analyzing several mathematical designs for the Skid Steer Mobile Robot (SSMR), the controllers are implemented in an embedded microcontroller - Mbed LPC1768. To verify the controllers, MATLAB-Simulink is used for the simulation of both the controllers involving motors - Maxon RE40. This paper compares between PID and LQR controller along with the performance comparison between Homogenous and Non-Homogenous LQR controllers.

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Mhadhbi, Imène, and Slim Ben Saoud. "Model-based design approach for embedded digital controllers design." International Journal of Automation and Control 5, no. 3 (2011): 267. http://dx.doi.org/10.1504/ijaac.2011.042857.

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Quagli, Andrea, Daniele Fontanelli, Luca Greco, Luigi Palopoli, and Antonio Bicchi. "Design of Embedded Controllers Based on Anytime Computing." IEEE Transactions on Industrial Informatics 6, no. 4 (November 2010): 492–502. http://dx.doi.org/10.1109/tii.2010.2055878.

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Soto-Hidalgo, J. M., A. Vitiello, J. M. Alonso, G. Acampora, and J. Alcala-Fdez. "Design of Fuzzy Controllers for Embedded Systems With JFML." International Journal of Computational Intelligence Systems 12, no. 1 (2019): 204. http://dx.doi.org/10.2991/ijcis.2019.125905646.

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Burns and, Daniel, and Thomas G. Sugar. "Rapid Embedded Programming in the Mathworks Environment." Journal of Computing and Information Science in Engineering 2, no. 3 (September 1, 2002): 237–41. http://dx.doi.org/10.1115/1.1519836.

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New, commercially available, automatic, code-generation tools are used in teaching and lab exercises to progress from controller design, to simulation, and finally to implementation on mechanical hardware. An embedded computing system consists of a dedicated, digital, electronic-processor that controls a system that interacts with the environment. Case studies highlighting a force-feedback joystick and motor servo control with encoder feedback are presented to illustrate laboratory exercises that teach mechanical engineering students hardware-in-the-loop control system design. Using these software tools, design iterations and multiple controllers are quickly simulated and downloaded to the actual hardware.

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Roy, Debayan, Licong Zhang, Wanli Chang, Dip Goswami, Birgit Vogel-Heuser, and Samarjit Chakraborty. "Tool Integration for Automated Synthesis of Distributed Embedded Controllers." ACM Transactions on Cyber-Physical Systems 6, no. 1 (January 31, 2022): 1–31. http://dx.doi.org/10.1145/3477499.

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Controller design and their software implementations are usually done in isolated design spaces using respective COTS design tools. However, this separation of concerns can lead to long debugging and integration phases. This is because assumptions made about the implementation platform during the design phase—e.g., related to timing—might not hold in practice, thereby leading to unacceptable control performance. In order to address this, several control/architecture co-design techniques have been proposed in the literature. However, their adoption in practice has been hampered by the lack of design flows using commercial tools. To the best of our knowledge, this is the first article that implements such a co-design method using commercially available design tools in an automotive setting, with the aim of minimally disrupting existing design flows practiced in the industry. The goal of such co-design is to jointly determine controller and platform parameters in order to avoid any design-implementation gap , thereby minimizing implementation time testing and debugging. Our setting involves distributed implementations of control algorithms on automotive electronic control units ( ECUs ) communicating via a FlexRay bus. The co-design and the associated toolchain Co-Flex jointly determines controller and FlexRay parameters (that impact signal delays) in order to optimize specified design metrics. Co-Flex seamlessly integrates the modeling and analysis of control systems in MATLAB/Simulink with platform modeling and configuration in SIMTOOLS/SIMTARGET that is used for configuring FlexRay bus parameters. It automates the generation of multiple Pareto-optimal design options with respect to the quality of control and the resource usage, that an engineer can choose from. In this article, we outline a step-by-step software development process based on Co-Flex tools for distributed control applications. While our exposition is automotive specific, this design flow can easily be extended to other domains.

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Gwak, Kwan-Woong, and Glenn Y. Masada. "Regularization Embedded Nonlinear Control Designs for Input-Constrained and Ill-Conditioned Thermal System." Journal of Dynamic Systems, Measurement, and Control 126, no. 3 (September 1, 2004): 574–82. http://dx.doi.org/10.1115/1.1789973.

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New regularization embedded nonlinear control designs are proposed for the temperature control of an input-constrained and ill-conditioned thermal process. A classic nonlinear controller applied to such a process is shown to provide good temperature tracking but generates physically unreasonable actuator solutions, i.e. input-constraint-violation. The reason of input-constraint-violating control solutions—ill-conditionedness—is shown by applying singular value decomposition (SVD) on the linear algebraic equivalence of the nonlinear controllers (LAENC). Based on the analogy of LAENC and regularization method for the linear algebraic equations, Tikhonov, truncated singular value decomposition (TSVD) and modified TSVD (MTSVD) methods are embedded in the design of feedback linearizing controllers (FBL) and sliding mode controllers (SMC). These regularization embedded nonlinear controllers (RENLC) provide good temperature tracking and generate physically reasonable and actuator-constraint-satisfying solutions for the ill-conditioned system, in spite of the modeling errors inherent in applying regularization. The optimal Tikhonov parameter is found using an L-curve. Quantitative comparisons of the residuals and standard deviations of the control inputs are used as criteria to select the optimal truncated singular value decomposition (TSVD) parameter.

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Huba, Mikulas, Stefan Chamraz, Pavol Bistak, and Damir Vrancic. "Making the PI and PID Controller Tuning Inspired by Ziegler and Nichols Precise and Reliable." Sensors 21, no. 18 (September 14, 2021): 6157. http://dx.doi.org/10.3390/s21186157.

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This paper deals with the design of a DC motor speed control implemented by an embedded controller. The design is simple and brings some important changes to the traditional Ziegler–Nichols tuning. The design also includes a novel anti-windup implementation of the controller and an integrated noise-reduction filter design. The proposed tuning method considers all important aspects of the control, such as pre-processing of the measured signals and filtering (to attenuate the measurement noise), time delays of the process, modeling and identification of the process, and constraints on the control signal. Three important aspects of designing PI and PID controllers for processes with noisy output on Arduino-type embedded computers are considered. First, it deals with the integrated design of the input filter and the controller parameters, since both are interdependent. Secondly, the method of setting the controllers from step responses by Ziegler and Nichols is modified for the case of digital signal processing (without drawing the tangent), while it recommends the suitability of its modification in terms of the use of both integral and static models. Third, the most suitable anti-windup solution for the given controller structure is proposed. In summary, the paper shows that an appropriate design of the embedded controller can achieve excellent closed-loop performance even in a noisy process environment with limited control signals.

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Dharmalingam, S., L. Sivakumar, T. Anandhi, and M. Umapathy. "Improved method to mitigate the effect of coal fuel switching on critical process parameters of a steam generator in a thermal power plant." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 225, no. 8 (September 23, 2011): 1026–40. http://dx.doi.org/10.1177/0957650911420016.

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The design and performance of steam generators supplied to thermal power plants are greatly influenced by the properties of coal burnt. All coals are not same and the variation of heating value of coal supplied to boiler results in changes in critical process parameters like pressure and temperature of main steam produced. These fluctuations are normally controlled by master pressure controller, provided the variation in heating value is within certain limits. If the heating value of coal being burnt varies substantially, a remedial measure is necessary to control the pressure and temperature fluctuations during coal fuel switching. The composition of the coal burnt currently in a boiler is determined from an online analyser, and an embedded controller computes the current heating value of the coal and suitably modifies the gains of all the controllers to arrest the undue fluctuations in pressure and temperature. A validated mathematical model for a typical 500 MW plant is used to simulate the variations in pressure and temperature of steam with normal and embedded controllers. Significant reduction in pressure and temperature variation has been achieved with an embedded controller. This article discusses the improved method of ensuring optimum boiler performance during coal fuel switchover.

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Zhou, Geng Lie, Chi Bing Hu, and Ya Zhou Wang. "The Design of the Network Weighing Monitoring System Based on Embedded Controller." Advanced Materials Research 503-504 (April 2012): 1385–88. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1385.

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The functions and the characteristics of RS-485 bus, I-7188 embedded controller, and SK2001 intellectual weighting controller are introduced briefly in this paper. The communication protocol of weighing controller, design of system hardware and software, and implementation of communication function are also analyzed in detail here. The serial communication between I-7188 and multiple weighing controllers has been implemented by using RS-485. As a result, the centralized control of the distributed equipments, the acquisition and automation upload of the metering data have been accomplished. The results of practical application show that this system has the characteristic of high stability and tolerance; it is easy to be managed and expanded as well.

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Дисертації з теми "Embedded controllers design"

Phillips, Grant. "Design and development of a remote reconfigurable internet embedded I/O controller." Thesis, Port Elizabeth Technikon, 2003. http://hdl.handle.net/10948/116.

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The use of embedded Internet systems is growing rapidly in the manufacturing sector. These systems allow the monitoring and controlling of plant machinery and manufactured items from a remote location via a standard Web interface. In a manufacturing environment, it is inevitable that long running processes will require support for dynamic reconfiguration because, for example, machines may fail, services may be moved or withdrawn and user requirements may change. In such an environment it is essential that the operation and architecture of such processes can be modified to reflect such changes. This research project will present methods and ideas for establishing a reconfigurable remote system by using standard 8-bit microcontrollers and reconfigurable hardware. It will allow a manufacturing process to be modified and changed within minutes without even having to be physically present at the location where the process is running.

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Guido, James Sebastian. "Design of robust asynchronous reconfigurable controllers for parallel synchronization using embedded graphs." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/2842.

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Synchronization is a key System-on-Chip (SoC) design issue in modern technologies. As the number of operating points under consideration increases, specifications which are capable of altering key parameters such as the time available for synchronization and Mean Time Between Failures (MTBF) in response to input from the user/system become desirable. This thesis explores how a combination of parallelism and scheduling, referred to as wagging, can be utilized to construct schedulers for synchronizer designs which are capable of pooling the gain-bandwidth products of their composite devices, in order to satisfy this requirement. In this work, we explore the ways in which the areas of graph theory and reconfigurable hardware design can be applied to generate both combinational and sequential scheduler designs, which satisfy the behavior requirement above. Further to this point, this work illustrates that such a scheduler is primarily comprised of an interrupt subsystem, and a reconfigurable token ring. This thesis explores how both of these components can be controlled in absence of a clock signal, as well as the design challenges inherent to each part. The final noteworthy issue in this study is with regard to the flow control of data in a parallel synchronizer that incorporates a First-In First-Out (FIFO) buffer to decouple the reading and writing operations from each other. Such a structure incurs penalties if the data rates on both sides are not well matched. This work presents a method by which combinations of serial and parallel reading operations are used to minimize this mismatch.

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Maldonado, Leslie Grace. "Building blocks for co-design of controllers and implementation platforms in embedded systems." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81609.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 93-95).
One of the biggest challenges in implementing feedback control applications on distributed embedded platforms is the realization of required control performance while utilizing minimal computational and communication resources. Determining such tradeoffs between control performance (e.g., stability, peak overshoot, etc.) and resource requirements is an active topic of research in the domain of cyber-physical systems (CPS). In this thesis, a setup is considered where multiple distributed controllers communicate using a hybrid (i.e., time- and event-triggered) communication protocol like FlexRay (which is commonly used in automotive architectures). Mapping all control messages to time-triggered slots results in deterministic timing and hence good control performance, but time-triggered slots are more expensive. The event-triggered slots, while being less expensive, result in variable message delays and hence poor control performance. In order to tradeoff between cost and control performance, a number of recent papers proposed a switching scheme where messages are switched between time- and event-triggered slots based on the state of the plant being controlled. However, all of these studies were based on a monotonic approximation of the system dynamics. This while simplifying the resource dimensioning problem (i.e., the minimum number of time-triggered slots required to realize a given control performance) leads to pessimistic results in terms of usage of time-triggered communication. In this thesis, it is shown that the usage of time-triggered communication (i.e., the requirement on the minimum number of time-triggered slots for a given control performance) is reduced when an accurate, non-monotonic behavior of the system dynamics is considered in the analysis. This technique is illustrated using a number examples and a real-life case study. While the focus is on communication resources in this thesis, these results are general enough to be applied to a wide range of problems from the CPS domain.
by Leslie Grace Maldonado.
S.M.

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Groom, Eddie L. "Ethernet controller design for an embedded system using FPGA technology." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/groom.pdf.

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Shah, Ghafoor, and Saad Arslan. "Design of an in-field Embedded Test Controller." Thesis, Linköpings universitet, ESLAB - Laboratoriet för inbyggda system, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70791.

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Electronic systems installed in their operation environments often require regular testing. The nanometer transistor size in new IC design technologies makes the electronic systems more vulnerable to defects. Due to certain reasons like wear out or over heating and difficulty to access systems in remote areas, in-field testing is vital. For in-field testing, embedded test controllers are more effective in terms of maintenance cost than external testers. For in-field testing, fault coverage, high memory requirements, test application time, flexibility and diagnosis are the main challenges. In this thesis, an Embedded Test Controller (ETC) is designed and implemented which provides flexible in-field testing and diagnostic capability with high fault coverage. The ETC has relatively low memory requirements for storing deterministic test data as compared to storing complete test vectors. The test patterns used by the ETC are stored separately for each component of the device under test, in system memory. The test patterns for each component are concatenated during test application according to a flexible test command. To address test application time (which corresponds to down time of the system), two different versions of the ETC are designed and implemented. These versions provide a trade off between test application time and hardware overhead. Hence, a system integrator can select which version to use depending on the cost factors at hand. The ETC can make use of an embedded CPU in the Device Under Test (DUT), for performing test on the DUT. For DUTs where no embedded CPU is available, there is the additional cost of a test specific CPU for the ETC. To access the DUT during the test application, the IEEE 1149.1 (JTAG) interface is used. The ETC generates test result that provides information of failing ICs and patterns. The designed and implemented versions of the ETC are validated through experimentations. An FPGA platform is used for experimental validation of the ETC versions. A set of tools are developed for automating the experimental setup. Performance and hardware cost of the ETC versions are evaluated using the ITC'02 benchmarks.

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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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Tavakoli, Reza. "Design of Road Embedded Dynamic Charging Systems for Electrified Transportation." DigitalCommons@USU, 2020. https://digitalcommons.usu.edu/etd/7715.

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The U.S. transportation sector represented about 28% of all energy consumption in 2018. Petroleum products accounted for 92% of this total energy. Light-duty vehicles are the largest energy consumers in the transportation sector. The high amount of petroleum used by light-duty vehicles creates significant economic and environmental challenges. Electric Vehicles (EVs) have a higher fuel economy and can be emission-free; they are therefore an alternative solution for minimizing the negative environmental impact of internal combustion engine vehicles. However, the adoption of EVs has been limited by their limited driving range, long recharging time, and comparatively higher price. Dynamic wireless charging technology allows for charging the EV battery in motion. Charging pads are embedded in the road and the EV battery is charged while the vehicle is passing over them. This technology not only extends the EV range but also results in a considerable reduction in battery size and capacity. Therefore, dynamic wireless charging solves one of the major issues of EVs, leading to their large-scale adoption. In the first part of this dissertation, a pad optimization methodology is presented to minimize system cost and losses. Using this method, two pads are optimized, built and tested for charging the EV. In the next section, two methods are presented to estimate how much the EV is laterally misaligned with respect to the center of the charging pads. This helps to increase system efficiency and power transfer capability. Finally, new concrete-based material is presented and studied to reduce the charging pad cost and increase their durability.

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Jones, Omar. "DESIGN AND DEVELOPMENT OF AN EMBEDDED DC MOTOR CONTROLLER USING A PID ALGORITHM." Thesis, Linköping University, Electronics System, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58947.

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This project was held at London South Bank University in the UK, with corporation with staff from Linköping University in Sweden as Bachelor thesis.

This report will guide you through the used techniques in order to achieve a successful cooler/Fan project with a minimum budget and good energy saving methods.

The steps of setting the used software and components are supported with figures and diagrams. You will find full explanation of the used components and mathematics, in additional to a complete working code.

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Østhus, Per Magnus. "Concurrent operation of Bluetooth low energy and ANT wireless protocols with an embedded controller." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14040.

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With the introduction of low-power wireless technologies, new applicationsin the healthcare, fitness and home entertainment markets emergethrough the use of ultra low-power sensors. These devices are designed torun for years on a single coin-cell battery.ANT and Bluetooth Low Energy are two low-power protocols that emergeas competitors in this market. The ability to combine these in a single systemnot only takes away the element of choice from the manufacturers, but alsoprovides compatibility between the two protocols. An ANT-enabled devicecan be coupled to a Bluetooth network, with the benefit of connecting tonon-ANT central devices, such as smartphones, tablets and laptops.In this thesis, the co-existence of these two protocols is discussed. Animplementation with two distinct radios for each protocol, controlled by asingle embedded microcontroller, is presented. The implementation is testedwith regards to packet loss with a simple test application. Test results showthat the obtained packet loss cannot be correlated to the co-existence of thetwo protocols.

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Shah, Shriya. "Design and Implementation of a Scalable Real-Time Motor Controller Architecture for Humanoid Robots and Exoskeletons." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78734.

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Embedded systems for humanoid robots are required to be reliable, low in cost, scalable and robust. Most of the applications related to humanoid robots require efficient force control of Series Elastic Actuators (SEA). These control loops often introduce precise timing requirements due to the safety critical nature of the underlying hardware. Also the motor controller needs to run fast and interface with several sensors. The commercially available motor controllers generally do not satisfy all the requirements of speed, reliability, ease of use and small size. This work presents a custom motor controller, which can be used for real time force control of SEA on humanoid robots and exoskeletons. Emphasis has been laid on designing a system which is scalable, easy to use and robust. The hardware and software architecture for control has been presented along with the results obtained on a novel Series Elastic Actuator based humanoid robot THOR.
Master of Science

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Книги з теми "Embedded controllers design"

Embedded system design with the C8051. Stamford, CT: Cengage Learning, 2009.

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Embedded design with the PIC18F452 Microcontroller. Upper Saddle River, N.J: Prentice Hall, 2003.

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Interfacing PIC microcontrollers: Embedded design by interactive simulation. Oxford: Newnes, 2006.

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Practical embedded controllers: Design and troubleshooting with the Motorolla [i.e. Motorola] 68HC11. Oxford: Newnes, 2003.

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Nagy, Chris. Embedded systems design using the TI MSP430 series. Amsterdam: Newnes, 2003.

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Vyatkin, Valeriy. IEC 61499 function blocks for embedded and distributed control systems design. Research Triangle Park, NC: ISA-Instrumentation, Systems, and Automation Society, 2007.

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Balarin, Felice. Hardware-Software Co-Design of Embedded Systems: The POLIS Approach. Boston, MA: Springer US, 1997.

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Liem, Clifford. Retargetable Compilers for Embedded Core Processors: Methods and Experiences in Industrial Applications. Boston, MA: Springer US, 1997.

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Felice, Balarin, ed. Hardware-software co-design of embedded systems: The POLIS approach. Boston: Kluwer Academic Publishers, 1997.

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Grun, Peter. Memory architecture exploration for programmable embedded systems. Boston, MA: Kluwer Academic Publishers, 2002.

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Частини книг з теми "Embedded controllers design"

Huhn, Sebastian, and Rolf Drechsler. "Reconfigurable TAP Controllers with Embedded Compression." In Design for Testability, Debug and Reliability, 93–104. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69209-4_6.

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Deppe, M., and M. Zanella. "Design and Realization of Distributed Real-Time Controllers for Mechatronic Systems." In Design and Analysis of Distributed Embedded Systems, 277–86. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-0-387-35599-3_28.

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da Costa Mendes, Paulo Renato, C. M. Richter, and M. C. Tavares. "Software for Embedded Controllers Design: Application to a Caloric Stimulator for Electronystagmography." In IV Latin American Congress on Biomedical Engineering 2007, Bioengineering Solutions for Latin America Health, 488–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-74471-9_114.

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Forrai, Alexandru. "Robust Controller Design." In Embedded Control System Design, 187–217. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28595-0_7.

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Forrai, Alexandru. "Classical Controller Design - Part I." In Embedded Control System Design, 99–126. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28595-0_4.

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Forrai, Alexandru. "Classical Controller Design - Part II." In Embedded Control System Design, 127–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28595-0_5.

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Chang, Wanli, Swaminathan Narayanaswamy, Alma Pröbstl, and Samarjit Chakraborty. "Reliable CPS Design for Unreliable Hardware Platforms." In Dependable Embedded Systems, 545–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52017-5_23.

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AbstractToday, many battery-operated cyber-physical systems (CPS) ranging from domestic robots, to drones, and electric vehicles are highly software-intensive. The software in such systems involves multiple feedback control loops that implement different functionality. How these control loops are designed is closely related to both the semiconductor aging of the processors on which the software is run and also the aging of the batteries in these systems. For example, sudden acceleration in an electric vehicle can negatively impact the health of the vehicle’s battery. On the other hand, processors age over time and stress, impacting the execution of control algorithms and thus the control performance. With increasing semiconductor scaling, and our increasing reliance on battery-operated devices, these aging effects are of concern for the lifetime of these devices. Traditionally, the design of the control loops focused only on control-theoretic metrics, related to stability and performance (such as peak overshoot or settling time). In this chapter we show that such controller design techniques that are oblivious of the characteristics of the hardware implementation platform dramatically worsen the battery behaviour and violate the safety requirement with processor aging. However, with proper controller design these effects can be mitigated—thereby improving the lifetime of the devices.

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Krupp, Alexander, Ola Lundkvist, Tim Schattkowsky, and Colin Snook. "The Adaptive Cruise Controller Case Study." In UML-B Specification for Proven Embedded Systems Design, 199–210. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4020-2867-0_12.

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Deppe, Markus, and Oliver Oberschelp. "Real-Time Support for Online Controller Supervision and Optimisation." In Architecture and Design of Distributed Embedded Systems, 121–30. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-0-387-35409-5_12.

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Beuche, Danilo, Lars Büttner, Daniel Mahrenholz, Wolfgang Schröder-Preikschat, and Friedrich Schön. "JPURE — A Purified Java Execution Environment for Controller Networks." In Architecture and Design of Distributed Embedded Systems, 65–73. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-0-387-35409-5_7.

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Тези доповідей конференцій з теми "Embedded controllers design"

Ghosh, Saurav Kumar, Soumyajjit Dey, Dip Goswami, Daniel Mueller-Gritschneder, and Samarjit Chakraborty. "Design and validation of fault-tolerant embedded controllers." In 2018 Design, Automation & Test in Europe Conference & Exhibition (DATE). IEEE, 2018. http://dx.doi.org/10.23919/date.2018.8342212.

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Tkacz, Jacek, and Marian Adamski. "Logic design of structured configurable controllers." In 2012 IEEE 3rd International Conference on Networked Embedded Systems for Every Application (NESEA). IEEE, 2012. http://dx.doi.org/10.1109/nesea.2012.6474022.

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Ribeiro, Jose, Fernando Melicio, and Luis Gomes. "High-level Petri nets modules for embedded controllers design." In 2015 IEEE 13th International Conference on Industrial Informatics (INDIN). IEEE, 2015. http://dx.doi.org/10.1109/indin.2015.7281851.

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Shreejith, Shanker, and Suhaib A. Fahmy. "Security aware network controllers for next generation automotive embedded systems." In DAC '15: The 52nd Annual Design Automation Conference 2015. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2744769.2744907.

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Huhn, Sebastian, Stephan Eggersgluss, Krishnendu Chakrabarty, and Rolf Drechsler. "Optimization of retargeting for IEEE 1149.1 TAP controllers with embedded compression." In Design, Automation & Test in Europe Conference & Exhibition (DATE 2017). IEEE, 2017. http://dx.doi.org/10.23919/date.2017.7927053.

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Mountain, Jeffrey R. "A Hybrid Fuzzy Logic Approach for 8-Bit Embedded Control Applications." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34965.

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The real-time implementation of fuzzy logic algorithms in embedded systems typically uses two approaches: employ fuzzy specific processing hardware or adapt standard embedded controllers to implement the fuzzy logic inference process. While high speed applications may require using the more sophisticated hardware, most embedded control applications do not have such processing speed demands, nor can they justify the added expense associated with the fuzzy enhanced processing engines. A review of embedded controller fuzzy logic implementations indicates a preference for 16-bit architectures; devoting significant processing resources to perform fuzzification, rule application, and defuzzification during real-time operation. While these approaches remain faithful to the foundations of fuzzy logic control, devoting processor resources to fuzzy specific tasks can limit a controller’s ability to handle peripheral tasks, such as man-machine I/O interface. This paper describes a simplified, hybrid approach suitable for standard 8-bit microcontrollers. The generic nature of the approach allows the methodology to be readily applicable to many single input, single output systems. This paper describes the hybrid fuzzy logic approach, which is placed in context using a proof-of-concept motor speed application. System performance data and notable limitations of the prototyped system are also described.

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Sanchez-Solano, Santiago, Ernesto del Toro, Maria Brox, Iluminada Baturone, and Angel Barriga. "A design environment for synthesis of embedded fuzzy controllers on FPGAs." In 2010 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE). IEEE, 2010. http://dx.doi.org/10.1109/fuzzy.2010.5584812.

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G. Cardoso, Victor, Jessica T. Barros, Renata T. Tavares, and Pedro M. G. del Foyo. "A Closed Design Cycle To Embedded Low-Cost Automation Based In Micro-Controllers." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1267.

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In this paper a Discrete Event Systems approach is used to design embedded systems, implemented using a commercial low-cost platform based on a single-board micro-controller. The approach uses Time Petri Nets (TPN) to build the system model and a model-checking tool to perform the formal verication and to support the embedded system code generation. The method was applied to design an automated sorting machine using the Arduino platform as programming device.

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M., Santhosh Prabhu, and Pallab Dasgupta. "Model Checking Controllers with Predicate Inputs." In 2013 26th International Conference on VLSI Design: concurrently with the 12th International Conference on Embedded Systems. IEEE, 2013. http://dx.doi.org/10.1109/vlsid.2013.210.

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Mandava, Ravi Kumar, and Pandu Ranga Vundavalli. "Design of PID controllers for 4-DOF planar and spatial manipulators." In 2015 International Conference on Robotics, Automation, Control and Embedded Systems (RACE). IEEE, 2015. http://dx.doi.org/10.1109/race.2015.7097269.

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Звіти організацій з теми "Embedded controllers design"

Wu, Yingjie, Selim Gunay, and Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, November 2020. http://dx.doi.org/10.55461/ytgv8834.

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Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining functionality in the aftermath of moderate to strong earthquakes, referred to as “resiliency” in earthquake engineering research. Moreover, the associated construction philosophy is being modernized with the utilization of accelerated bridge construction (ABC) techniques, which strive to reduce the impact of construction on traffic, society, economy and on-site safety. This report presents two bridge systems that target the aforementioned issues. A study that combined numerical and experimental research was undertaken to characterize the seismic performance of these bridge systems. The first part of the study focuses on the structural system-level response of highway bridges that incorporate a class of innovative connecting devices called the “V-connector,”, which can be used to connect two components in a structural system, e.g., the column and the bridge deck, or the column and its foundation. This device, designed by ACII, Inc., results in an isolation surface at the connection plane via a connector rod placed in a V-shaped tube that is embedded into the concrete. Energy dissipation is provided by friction between a special washer located around the V-shaped tube and a top plate. Because of the period elongation due to the isolation layer and the limited amount of force transferred by the relatively flexible connector rod, bridge columns are protected from experiencing damage, thus leading to improved seismic behavior. The V-connector system also facilitates the ABC by allowing on-site assembly of prefabricated structural parts including those of the V-connector. A single-column, two-span highway bridge located in Northern California was used for the proof-of-concept of the proposed V-connector protective system. The V-connector was designed to result in an elastic bridge response based on nonlinear dynamic analyses of the bridge model with the V-connector. Accordingly, a one-third scale V-connector was fabricated based on a set of selected design parameters. A quasi-static cyclic test was first conducted to characterize the force-displacement relationship of the V-connector, followed by a hybrid simulation (HS) test in the longitudinal direction of the bridge to verify the intended linear elastic response of the bridge system. In the HS test, all bridge components were analytically modeled except for the V-connector, which was simulated as the experimental substructure in a specially designed and constructed test setup. Linear elastic bridge response was confirmed according to the HS results. The response of the bridge with the V-connector was compared against that of the as-built bridge without the V-connector, which experienced significant column damage. These results justified the effectiveness of this innovative device. The second part of the study presents the HS test conducted on a one-third scale two-column bridge bent with self-centering columns (broadly defined as “resilient columns” in this study) to reduce (or ultimately eliminate) any residual drifts. The comparison of the HS test with a previously conducted shaking table test on an identical bridge bent is one of the highlights of this study. The concept of resiliency was incorporated in the design of the bridge bent columns characterized by a well-balanced combination of self-centering, rocking, and energy-dissipating mechanisms. This combination is expected to lead to minimum damage and low levels of residual drifts. The ABC is achieved by utilizing precast columns and end members (cap beam and foundation) through an innovative socket connection. In order to conduct the HS test, a new hybrid simulation system (HSS) was developed, utilizing commonly available software and hardware components in most structural laboratories including: a computational platform using Matlab/Simulink [MathWorks 2015], an interface hardware/software platform dSPACE [2017], and MTS controllers and data acquisition (DAQ) system for the utilized actuators and sensors. Proper operation of the HSS was verified using a trial run without the test specimen before the actual HS test. In the conducted HS test, the two-column bridge bent was simulated as the experimental substructure while modeling the horizontal and vertical inertia masses and corresponding mass proportional damping in the computer. The same ground motions from the shaking table test, consisting of one horizontal component and the vertical component, were applied as input excitations to the equations of motion in the HS. Good matching was obtained between the shaking table and the HS test results, demonstrating the appropriateness of the defined governing equations of motion and the employed damping model, in addition to the reliability of the developed HSS with minimum simulation errors. The small residual drifts and the minimum level of structural damage at large peak drift levels demonstrated the superior seismic response of the innovative design of the bridge bent with self-centering columns. The reliability of the developed HS approach motivated performing a follow-up HS study focusing on the transverse direction of the bridge, where the entire two-span bridge deck and its abutments represented the computational substructure, while the two-column bridge bent was the physical substructure. This investigation was effective in shedding light on the system-level performance of the entire bridge system that incorporated innovative bridge bent design beyond what can be achieved via shaking table tests, which are usually limited by large-scale bridge system testing capacities.

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Taiber, Joachim. Unsettled Topics Concerning the Impact of Quantum Technologies on Automotive Cybersecurity. SAE International, December 2020. http://dx.doi.org/10.4271/epr2020026.

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Quantum computing is considered the “next big thing” when it comes to solving computational problems impossible to tackle using conventional computers. However, a major concern is that quantum computers could be used to crack current cryptographic schemes designed to withstand traditional cyberattacks. This threat also impacts future automated vehicles as they become embedded in a vehicle-to-everything (V2X) ecosystem. In this scenario, encrypted data is transmitted between a complex network of cloud-based data servers, vehicle-based data servers, and vehicle sensors and controllers. While the vehicle hardware ages, the software enabling V2X interactions will be updated multiple times. It is essential to make the V2X ecosystem quantum-safe through use of “post-quantum cryptography” as well other applicable quantum technologies. This SAE EDGE™ Research Report considers the following three areas to be unsettled questions in the V2X ecosystem: How soon will quantum computing pose a threat to connected and automated vehicle technologies? What steps and measures are needed to make a V2X ecosystem “quantum-safe?” What standardization is needed to ensure that quantum technologies do not pose an unacceptable risk from an automotive cybersecurity perspective?

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