Relevant bibliographies by topics / DISTRIBUTED CONTROLLERS SYSTEM

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'DISTRIBUTED CONTROLLERS SYSTEM'

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Published: 11 September 2023

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Journal articles on the topic "DISTRIBUTED CONTROLLERS SYSTEM"

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Zaytsev, Sergej Vladilenovich. "REALIZATION OF ADAPTIVE REGULATORS IN DISTRIBUTION CONTROL SYSTEMS." Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics 2020, no. 3 (July 31, 2020): 99–104. http://dx.doi.org/10.24143/2072-9502-2020-3-99-104.

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The article considers the problems of synthesis of different distributed controllers and methods for implementing the adaptation the system of these controllers. Each type of distributed controllers has its own parameters in the transfer functions. The parameters of the controller can be obtained after studying and identification of the distributed control object. In the transfer functions there are two parameters that can be changed in order to achieve the high-quality transient processes in the control system. These parameters are: weight coefficient of the distributed link ni and the proportionality coefficient of the distributed link Ei. The parameters of the distributed link G and s depend on the object structure and on the time (or the selected sampling interval of the digital controller), respectively. According to the results of the synthesis of parameters of distributed controllers, there have been proposed the methods for implementing adaptive setup of different controllers. Currently, the following controllers are available: distributed high-precision controller, space-amplifying controller, space-differentiating amplifier controller, spatially-isodromic controller for distributed control systems. There has been considered implementing a distributed controller and shown in which part it is necessary to be adapted. The controller type is selected according to the tasks to be solved by the distributed object control system. Depending on the controller type, in the implementation of controller blocks, there can be used the standard integration and differentiation blocks available in different programming languages for programmable logic controllers. The example given in the article was developed using the CoDeSys software package supplied with OVEN programmable logic controller.
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Nakayama, Ryoichi, Hitoshi Iida, Hisashi Hozumi, Satoshi Okada, Hideharu Okano, and Tatsuo Miyazawa. "Distributed Control System for Six-Legged Walking Robot." Journal of Robotics and Mechatronics 5, no. 6 (December 20, 1993): 570–74. http://dx.doi.org/10.20965/jrm.1993.p0570.

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In this paper, describe a walking robot system which has been developed based on the assumption that it will be used to perform visual inspections. The robot is designed to be static walking and cableless. The six legs are disposed symmetrically around the center of the robot's body, and each modular leg comprises a number of links. The distributed control concept is adopted for the control system, which consists of a main controllers a sub-controller, and local controllers. The local controllers and driver circuits for the DC servo motors are mounted on the individual leg modules, and special-purpose small lightweight units have been developed. The robot is automatically controlled by a sub-controller which receives walk commands from the remote unit's main controller.
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Bouzid, Allal El Moubarek, Mohamed Zerrougui, Seifeddine Ben Elghali, Karim Beddiar, and Mohamed Benbouzid. "Robust Resonant Controllers for Distributed Energy Resources in Microgrids." Applied Sciences 10, no. 24 (December 14, 2020): 8905. http://dx.doi.org/10.3390/app10248905.

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Motivated by the problem of different types and variations of load in micro-grids, this paper presents robust proportional-resonant controllers with a harmonics compensator based on the internal model principle. These controllers ensure robust tracking of sinusoidal reference signals in distributed energy resource systems subject to load variation with respect to sinusoidal disturbances. The distributed generation resource and the resonant controllers are described using the augmented state system approach, allowing the application of the state feedback technique. In order to minimize the tracking error and ensure robustness against perturbation, a set of linear matrix inequalities (LMIs) are addressed for the synthesizing of controller gains. Finally, results obtained in the simulation for resonant compensators with the distributed energy system are presented, in which the controller is applied to the CC-CA inverter.
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Jahn, Uwe, Carsten Wolff, and Peter Schulz. "Concepts of a Modular System Architecture for Distributed Robotic Systems." Computers 8, no. 1 (March 14, 2019): 25. http://dx.doi.org/10.3390/computers8010025.

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Modern robots often use more than one processing unit to solve the requirements in robotics. Robots are frequently designed in a modular manner to fulfill the possibility to be extended for future tasks. The use of multiple processing units leads to a distributed system within one single robot. Therefore, the system architecture is even more important than in single-computer robots. The presented concept of a modular and distributed system architecture was designed for robotic systems. The architecture is based on the Operator–Controller Module (OCM). This article describes the adaption of the distributed OCM for mobile robots considering the requirements on such robots, including, for example, real-time and safety constraints. The presented architecture splits the system hierarchically into a three-layer structure of controllers and operators. The controllers interact directly with all sensors and actuators within the system. For that reason, hard real-time constraints need to comply. The reflective operator, however, processes the information of the controllers, which can be done by model-based principles using state machines. The cognitive operator is used to optimize the system. The article also shows the exemplary design of the DAEbot, a self-developed robot, and discusses the experience of applying these concepts on this robot.
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Cho, Yon Sang, Sung Jae Jun, and Heung Sik Park. "AGV System with Dual Motor Drive by Distributed Control." Key Engineering Materials 297-300 (November 2005): 2297–302. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2297.

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With the recent progress in flexible manufacturing systems (FMS) in industry, increasing attention has been given to Automatic Guided Vehicle (AGV) systems. An AGV is a self-powered unit for transporting materials between stations without needing to be controlled by an operator. Such a system has several sensors to recognize the external state, and it is designed to travel between stations without external assistance. To manage each device quickly and independently it requires a distributed controller with a main computer as the host, as well as a number of micro-controllers. In this study, an AGV system with dual motor drive was constructed. A Pentium 4 personal computer was set up as the main host for the distributed control, and this communicated with other micro-controllers in the management of the motor. The speed of each motor was also controlled by a micro-controller.
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Xu, Ning, Runfeng Chen, Yuchong Huang, Yiting Chen, and Jie Li. "Synthesis of Asynchronous Control and Synchronization for Multi-Robot System under Finite Horizon Temporal Task." Journal of Physics: Conference Series 2213, no. 1 (March 1, 2022): 012030. http://dx.doi.org/10.1088/1742-6596/2213/1/012030.

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Abstract This paper proposes a novel control synthesis method for cooperative multi-robot systems to fulfil a global mission given as linear temporal logic on finite traces (LTLf). Transition systems are used as the form of distributed controllers, such that the robots are driven to act asynchronously and synchronize on shared actions for necessary local coordination. An automated control synthesis method is proposed, which generates provably correct distributed controllers by two steps: (i) synthesizing satisfiable global controllers for the parallel composition of the uncontrolled system, such that the global specification is met; (ii) searching for a decomposable global controller among them over the synchronization scheme to obtain decomposed distributed controllers. The method is integrated into a closed-loop mission execution framework, of which the applicability is demonstrated with a simulation based on ROS.
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Xu, Ning, Ting Peng, Dawei Liu, and Jie Li. "Temporal Logic Control Synthesis for Distributed Multi-Agent Cooperative Tasking." Journal of Physics: Conference Series 2216, no. 1 (March 1, 2022): 012061. http://dx.doi.org/10.1088/1742-6596/2216/1/012061.

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Abstract In this work, we present a novel control synthesis method for cooperative multi-agent systems to fulfill a global mission given as linear temporal logic on finite traces (LTLf). The proposed method first synthesizes satisfiable global controllers for uncontrolled system, such that the global specification is met; and then, searches for a decomposable global controller among them over a maximum synchronization scheme; finally, further refining the synchronization scheme to obtain decomposed distributed controllers. To search for a decomposable global controller among the satisfiable ones, we present an informed searching algorithm based on the decomposability analysis of global controllers. A multi-UAV cooperative fire surveillance scenario is developed to illustrate the method.
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Badotra, Sumit, Sarvesh Tanwar, Salil Bharany, Ateeq Ur Rehman, Elsayed Tag Eldin, Nivin A. Ghamry, and Muhammad Shafiq. "A DDoS Vulnerability Analysis System against Distributed SDN Controllers in a Cloud Computing Environment." Electronics 11, no. 19 (September 29, 2022): 3120. http://dx.doi.org/10.3390/electronics11193120.

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Software-Defined Networking (SDN) is now a well-established approach in 5G, Internet of Things (IoT) and Cloud Computing. The primary idea behind its immense popularity is the separation of its underlying intelligence from the data-carrying components like routers and switches. The intelligence of the SDN-based networks lies in the central point, popularly known as the SDN controller. It is the central control hub of the SDN-based network, which has full privileges and a global view over the entire network. Providing security to SDN controllers is one such important task. Whenever one wishes to implement SDN into their data center or network, they are required to provide the website to SDN controllers. Several attacks are becoming a hurdle in the exponential growth of SDN, and among all one such attack is a Distributed Denial of Service (DDoS) attack. In a couple of years, several new SDN controllers will be available. Among many, Open Networking Operating System (ONOS) and OpenDayLight (ODL) are two popular SDN controllers laying the foundation for many other controllers. These SDN controllers are now being used by numerous businesses, including Cisco, Juniper, IBM, Google, etc. In this paper, vulnerability analysis is carried out against DDoS attacks on the latest released versions of both ODL and ONOS SDN controllers in real-time cloud data centers. For this, we have considered distributed SDN controllers (located at different locations) on two different clouds (AWS and Azure). These controllers are connected through the Internet and work on different networks. DDoS attacks are bombarded on the distributed SDN controllers, and vulnerability is analyzed. It was observed with experimentation that, under five different scenarios (malicious traffic generated), ODL-3 node cluster controller had performed better than ONOS. In these five different scenarios, the amount of malicious traffic was incregradually increased. It also observed that, in terms of disk utilization, memory utilization, and CPU utilization, the ODL 3-node cluster was way ahead of the SDN controller.
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Pan, J. Z., and R. V. Patel. "Reconfigurable distributed real-time processing for multi-robot control: Design, implementation and experimentation." Robotica 22, no. 6 (November 2004): 661–79. http://dx.doi.org/10.1017/s0263574704000360.

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Sophisticated robotic applications require systems to be reconfigurable at the system level. Aiming at this requirement, this paper presents the design and implementation of a software architecture for a reconfigurable real-time multi-processing system for multi-robot control. The system is partitioned into loosely coupled function units and the data modules manipulated by the function units. Modularized and unified structures of the sub-controllers and controller processes are designed and constructed. All the controller processes run autonomously and intra-sub-controller information exchange is realized by shared data modules that serve as a data repository in the sub-controller. The dynamic data-management processes are responsible for data exchange among sub-controllers and across the computer network. Among sub-controllers there is no explicit temporal synchronization and the data dependencies are maintained by using datum-based synchronization. The hardware driver is constructed as a two-layered system to facilitate adaptation to various robotic hardware systems. A series of effective schemes for software fault detection, fault anticipation and fault termination are accomplished to improve run-time safety. The system is implemented cost-effectively on a QNX real-time operating system (RTOS) based system with a complete PC architecture, and experimentally validated successfully on an experimental dual-arm test-bed. The results indicate that the architectural design and implementation are well suited for advanced application tasks.
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Elgammal, Adel, and Tagore Ramlal. "Adaptive Voltage Regulation Control Strategy in a Stand-Alone Islanded DC Microgrid based on distributed Wind / Photovoltaic / Diesel / Energy Storage Hybrid Energy Conversion System." European Journal of Electrical Engineering and Computer Science 5, no. 4 (July 26, 2021): 26–33. http://dx.doi.org/10.24018/ejece.2021.5.4.343.

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An adaptive approach for optimal tuning of a SMC for an automated voltage regulator system is displayed in this study. The approach is centered on hybrid of the GA and MOPSA. In addition, unique objective functions for the controller's parameter optimization are suggested. The performance of the resulting perfect sliding mode controller is confirmed by comparing it to controllers adjusted using various techniques that have been published in the literature. The simulation outcomes indicate that controllers tuned with the projected MOPSO and GA algorithms outperform controllers tuned with existing methods. In addition, a comparison study is performed to select the best controller for use in AVR systems. The suggested algorithm's major benefit is a considerable boost in convergence speed. With step changes and step load modifications in input wind power, the system model with built-in intelligent controller is generated in MATLAB/SIMULINK. The benefits of the recommended intelligent control algorithm are confirmed by comparing the outcomes of the sliding mode controller and the projected MOPSO self-tuned controller. The findings show that the hybrid Wind/PV system's reactive power adjustment capabilities. When used in conjunction with BES, it is extremely successful in optimising the voltage profile although providing active energy to local load.
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Dissertations / Theses on the topic "DISTRIBUTED CONTROLLERS SYSTEM"

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Evans, Katie Allison. "Reduced Order Controllers for Distributed Parameter Systems." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11063.

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Distributed parameter systems (DPS) are systems defined on infinite dimensional spaces. This includes problems governed by partial differential equations (PDEs) and delay differential equations. In order to numerically implement a controller for a physical system we often first approximate the PDE and the PDE controller using some finite dimensional scheme. However, control design at this level will typically give rise to controllers that are inherently large-scale. This presents a challenge since we are interested in the design of robust, real-time controllers for physical systems. Therefore, a reduction in the size of the model and/or controller must take place at some point. Traditional methods to obtain lower order controllers involve reducing the model from that for the PDE, and then applying a standard control design technique. One such model reduction technique is balanced truncation. However, it has been argued that this type of method may have an inherent weakness since there is a loss of physical information from the high order, PDE approximating model prior to control design. In an attempt to capture characteristics of the PDE controller before the reduction step, alternative techniques have been introduced that can be thought of as controller reduction methods as opposed to model reduction methods. One such technique is LQG balanced truncation. Only recently has theory for LQG balanced truncation been developed in the infinite dimensional setting. In this work, we numerically investigate the viability of LQG balanced truncation as a suitable means for designing low order, robust controllers for distributed parameter systems. We accomplish this by applying both balanced reduction techniques, coupled with LQG, MinMax and central control designs for the low order controllers, to the cable mass, Klein-Gordon, and Euler-Bernoulli beam PDE systems. All numerical results include a comparison of controller performance and robustness properties of the closed loop systems.
Ph. D.
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Maalouf, Hoda William. "Optimisation of the communication network performance of distributed systems with resequencing constraints." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287502.

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Muga, Julius N’gon’ga. "Design and implementation of IEC 61499 standard-based nonlinear controllers using functional block programming in distributed control platform." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2381.

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Thesis (DTech (Electrical Engineering))--Cape Peninsula University of Technology, 2016.
Majority of the industrial systems encountered are significantly non-linear in nature, so if they are synthesised and designed by linear methods, then some of salient features characterising of their performance may not be captured. Therefore designing a control system that captures the nonlinearities is important. This research focuses on the control design strategies for the Continuous Stirred Tank Reactor (CSTR) process. To control such a process a careful design strategy is required because of the nonlinearities, loop interaction and the potentially unstable dynamics characterizing the system. In these systems, linear control methods alone may not perform satisfactorily. Three different control design strategies (Dynamic decoupling, Decentralized and Input-output feedback linearization controller) are proposed and implemented .in the Matlab/Simulink platform and the developed strategies are then deployed to the design of distributed automation control system configuration using the IEC 61499 standard based functional block programming language. Twin CAT 3.1 system real-time and Matlab/Simulink (www.mathworks.com) environment are used to test the effectiveness of the models The simulation results from the investigation done between Simulink and TwinCAT 3 software (Beckhoff Automation) platforms in the case of the model transformation and closed loop simulation of the process for the considered cases have shown the suitability and the potentials of merging the Matlab/Simulink control function blocks into the TwinCAT 3.1 function blocks in real-time. The merits derived from such integration imply that the existing software and software components can be re-used. This is in line with one of the IEC 6144 standard requirements such as portability and interoperability. Similarly, the simplification of programming applications is greatly achieved. The investigation has also shown that the integration the of Matlab/Simulink models running in the TwinCAT 3.1 PLC do not need any modification, hence confirming that the TwinCAT 3.1 development platform can be used for the design and implementation of controllers from different platforms. Also, based on the steps required for model transformation the between the Matlab/Simulink to the TwinCAT 3 functional blocks, the algorithms of the control design methodologies developed, simulation results are used to verify the suitability of the controls to find whether the effective set-point tracking control and disturbance effect minimisation for the output variables can be achieved in real-time using the transformed Simulink blocks to the TwinCAT 3 functional blocks, then downloaded to the Beckhoff CX5020 PLC for real-time execution. Good set-point tracking control is achieved for the MIMO closed loop nonlinear CSTR process for the considered cases of the developed control methodologies. Similarly, the effects of disturbances are investigated. TwinCAT functional modules achieved good set-point tracking with these disturbances minimization under all the cases considered.
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Kern, Richard Michael [Verfasser], Boris [Akademischer Betreuer] Lohmann, Oliver [Gutachter] Sawodny, and Boris [Gutachter] Lohmann. "Design and Experimental Validation of Output Feedback Tracking Controllers for a Pneumatic System with Distributed Parameters / Richard Michael Kern ; Gutachter: Oliver Sawodny, Boris Lohmann ; Betreuer: Boris Lohmann." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1201086310/34.

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Wong, Kar Leong. "A message controller for distributed processing systems." Thesis, Nottingham Trent University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312309.

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Izumi, Shinsaku. "Studies on Controller Networks." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199448.

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Eichler, Annika [Verfasser]. "Interconnected Systems - Analysis and Distributed Controller Synthesis / Annika Eichler." München : Verlag Dr. Hut, 2016. http://d-nb.info/1122524439/34.

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Riis, Pontus. "Simulation of a Distributed Implementation of an Adaptive Cruise Controller." Thesis, Linköping University, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9357.

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Much functionality of today's vehicles runs as software on embedded computer systems. This includes, for example, automatic climate control and engine control.

As the processors necessarily are located in diffent physical locations inside the vehicle wires must be drawn between processors that need to communicate. Therefore, it is typical to have one or several buses connecting the processors in an embedded computer network, thus creating a distributed system. As some parts of the system in the car have real-time properties, it is necessary to validate that the real-time properties are upheld in the distributed system.

This thesis presents the design and implementation of an adaptive cruise controller (ACC), which is a cruise controller that also keeps a minimum distance to the closest vehicle in front. Further, the performance of the ACC has been evaluated using an existing system-level simulator for distributed real-time systems together with metrics for Quality-of-Control (QoC).

The ACC has then been simulated under different scenarios. The scenarios include outside conditions, for example the slope of the road, the behaviour of the vehicle in front, and the desired velocity, as well as internal conditions as adding different amounts of extra load on the processors and the bus.

The results show that the functionality of the ACC starts deteriorating when the extra load on the nodes reaches high levels. When the extra load reaches very high levels, the ACC stops functioning completely. The results also show that the extra load on the bus has very little effect on the performance of the ACC.

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Theron, Pieter. "Distributed control system network for an electrostatic roll separator." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/2709.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006.
The distributed control system network involves analog data acquisition nodes interconnected through CAN and USB protocol interfaces to form a network. The network is designed to be generically applicable to various control problems. This network of controllers was specifically utilised on a scaled-down electrostatic roll separator plant used in the mineral processing industry. A SISO and a MIMO regulator was designed to demonstrate the regulation of plant parameters. The MIMO regulator was employed in a scheme that optimises the plant yield automatically. Analog data acquisition nodes were designed and built especially for the purposes of this project. These nodes were installed on the electrostatic roll separator plant. PC based application software was written so that plant ID experiments could be performed. SISO and MIMO regulators along with a yield optimising scheme was designed and implemented in the application software. Both SISO and MIMO regulators successfully regulated plant outputs. The nonconducting mineral product grade was regulated by the SISO regulator. The non-conducting mineral product grade and conductor mineral mass flow was regulated by the MIMO regulator. The yield optimiser successfully employed the MIMO regulator to optimise the plant yield automatically.
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Brasileiro, Francisco Vilar. "Constructing fail-controlled nodes for distributed systems : a software approach." Thesis, University of Newcastle Upon Tyne, 1995. http://hdl.handle.net/10443/1971.

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Designing and implementing distributed systems which continue to provide specified services in the presence of processing site and communication failures is a difficult task. To facilitate their development, distributed systems have been built assuming that their underlying hardware components are Jail-controlled, i.e. present a well defined failure mode. However, if conventional hardware cannot provide the assumed failure mode, there is a need to build processing sites or nodes, and communication infra-structure that present the fail-controlled behaviour assumed. Coupling a number of redundant processors within a replicated node is a well known way of constructing fail-controlled nodes. Computation is replicated and executed simultaneously at each processor, and by employing suitable validation techniques to the outputs generated by processors (e.g. majority voting, comparison), outputs from faulty processors can be prevented from appearing at the application level. One way of constructing replicated nodes is by introducing hardwired mechanisms to couple replicated processors with specialised validation hardware circuits. Processors are tightly synchronised at the clock cycle level, and have their outputs validated by a reliable validation hardware. Another approach is to use software mechanisms to perform synchronisation of processors and validation of the outputs. The main advantage of hardware based nodes is the minimum performance overhead incurred. However, the introduction of special circuits may increase the complexity of the design tremendously. Further, every new microprocessor architecture requires considerable redesign overhead. Software based nodes do not present these problems, on the other hand, they introduce much bigger performance overheads to the system. In this thesis we investigate alternative ways of constructing efficient fail-controlled, software based replicated nodes. In particular, we present much more efficient order protocols, which are necessary for the implementation of these nodes. Our protocols, unlike others published to date, do not require processors' physical clocks to be explicitly synchronised. The main contribution of this thesis is the precise definition of the semantics of a software based Jail-silent node, along with its efficient design, implementation and performance evaluation.
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Books on the topic "DISTRIBUTED CONTROLLERS SYSTEM"

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Morris, Kirsten A. Controller Design for Distributed Parameter Systems. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34949-3.

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N, Saridis George, and United States. National Aeronautics and Space Administration., eds. Petri net controllers for distributed robotic systems. Troy, N.Y: Center for Intelligent Robotic Systems for Space Exploration, Rensselaer Polytechnic Institute, Electrical, Computer, and Systems Engineering Dept., 1992.

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Engineers, Institution of Electrical, ed. Modelling control systems using IEC 61499: Applying function blocks to distributed systems. London: Institution of Electrical Engineers, 2001.

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Inc, ebrary, ed. FACTS controllers in power transmission and distributio. New Delhi: New Age International (P) Ltd., Publishers, 2007.

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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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United States. National Aeronautics and Space Administration., ed. Final technical report on robust design of distributed controllers for large flexible space structures. Washington, DC: Catholic University of America, School of Engineering and Architecture, Dept. of Electrical Engineering, 1988.

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Yü, Chi-ming. Implementation of a digital PID controller in a hierarchical distributed control system. 1987.

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Morris, Kirsten A. Controller Design for Distributed Parameter Systems. Springer, 2020.

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Morris, Kirsten A. Controller Design for Distributed Parameter Systems. Springer International Publishing AG, 2021.

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National Aeronautics and Space Administration (NASA) Staff. Petri Net Controllers for Distributed Robotic Systems. Independently Published, 2018.

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Book chapters on the topic "DISTRIBUTED CONTROLLERS SYSTEM"

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Barreiro-Gomez, Julian. "Distributed System Partitioning and DMPC." In The Role of Population Games in the Design of Optimization-Based Controllers, 179–92. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-92204-1_9.

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Knüppel, Torsten, Frank Woittennek, Islam Boussaada, Hugues Mounier, and Silviu-Iulian Niculescu. "Flatness-Based Control for a Non-Linear Spatially Distributed Model of a Drilling System." In Low-Complexity Controllers for Time-Delay Systems, 205–18. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05576-3_14.

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Gieseking, Manuel, Jesko Hecking-Harbusch, and Ann Yanich. "A Web Interface for Petri Nets with Transits and Petri Games." In Tools and Algorithms for the Construction and Analysis of Systems, 381–88. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72013-1_22.

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AbstractDeveloping algorithms for distributed systems is an error-prone task. Formal models like Petri nets with transits and Petri games can prevent errors when developing such algorithms. Petri nets with transits allow us to follow the data flow between components in a distributed system. They can be model checked against specifications in LTL on both the local data flow and the global behavior. Petri games allow the synthesis of local controllers for distributed systems from safety specifications. Modeling problems in these formalisms requires defining extended Petri nets which can be cumbersome when performed textually.In this paper, we present a web interface (The web interface is deployed at http://adam.informatik.uni-oldenburg.de.) that allows an intuitive, visual definition of Petri nets with transits and Petri games. The corresponding model checking and synthesis problems are solved directly on a server. In the interface, implementations, counterexamples, and all intermediate steps can be analyzed and simulated. Stepwise simulations and interactive state space generation support the user in detecting modeling errors.
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Ramasamy, Sudha, Mattias Bennulf, Xiaoxiao Zhang, Samuel Hammar, and Fredrik Danielsson. "Online Path Planning in a Multi-agent-Controlled Manufacturing System." In Lecture Notes in Mechanical Engineering, 124–34. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_13.

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AbstractIn recent years the manufacturing sectors are migrating from mass production to mass customization. To be able to achieve mass customization, manufacturing systems are expected to be more flexible to accommodate the different customizations. The industries which are using the traditional and dedicated manufacturing systems are expensive to realize this transition. One promising approach to achieve flexibility in their production is called Plug & Produce concept which can be realized using multi-agent-based controllers. In multi-agent systems, parts and resources are usually distributed logically, and they communicate with each other and act as autonomous agents to achieve the manufacturing goals. During the manufacturing process, an agent representing a robot can request a path for transportation from one location to another location. To address this transportation facility, this paper presents the result of a futuristic approach for an online path planning algorithm directly implemented as an agent in a multi-agent system. Here, the agent systems can generate collision-free paths automatically and autonomously. The parts and resources can be configured with a multi-agent system in the manufacturing process with minimal human intervention and production downtime, thereby achieving the customization and flexibility in the production process needed.
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Mostarda, Leonardo, Rudi Ball, and Naranker Dulay. "Distributed Fault Tolerant Controllers." In Distributed Applications and Interoperable Systems, 141–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13645-0_11.

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Klavins, Eric. "Automatically Synthesized Controllers for Distributed Assembly." In Cooperative Systems, 111–27. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4757-3758-5_7.

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Morris, Kirsten A. "Infinite-Dimensional Systems Theory." In Controller Design for Distributed Parameter Systems, 13–69. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34949-3_2.

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Hernandez, Ivan Romero, and Jean-Luc Koning. "State Controlled Execution for Agent-Object Hybrid Languages." In Advanced Distributed Systems, 78–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-25958-9_8.

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Buño, Kelvin C., and Henry N. Adorna. "Controlled Rewriting Distributed P Systems." In Proceedings in Information and Communications Technology, 46–61. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54106-6_5.

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Li, Wei, Alvaro Miyazawa, Pedro Ribeiro, Ana Cavalcanti, Jim Woodcock, and Jon Timmis. "From Formalised State Machines to Implementations of Robotic Controllers." In Distributed Autonomous Robotic Systems, 517–29. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73008-0_36.

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Conference papers on the topic "DISTRIBUTED CONTROLLERS SYSTEM"

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Shi, Linda Z., and Mohamed B. Trabia. "Comparison of Two Distributed Fuzzy Logic Controllers for Flexible-Link Manipulators." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2334.

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Abstract Fuzzy logic control presents a computationally efficient and robust alternative to conventional controllers. An expert in a particular system can usually design a fuzzy logic controller for it easily as can be seen in many applications where fuzzy logic has been already successfully implemented. On the other hand, fuzzy logic controllers are not readily available for flexible-link manipulators. This paper presents two different approaches to design distributed controllers for flexible-link manipulators. The first approach, which is based on observing the performance of flexible manipulators, uses a distributed controller composed of two PD-like fuzzy logic controllers; one controller controls the joint angle while the other controls the tip vibration. The second distributed controller is based on evaluating the importance of the parameters of the system. The most two important parameters, joint and tip point velocities, are grouped together in the same fuzzy logic controller. The other parameters, joint angle and tip point displacement, are used in the second fuzzy logic controller. Both approaches are tuned using nonlinear programming. The paper compares these two approaches with tracking using a linear Quadratic Regulator (LQR).
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"An example of self-tuning controllers on distributed system." In Proceedings of the 1999 American Control Conference. IEEE, 1999. http://dx.doi.org/10.1109/acc.1999.782382.

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Torres, Luiz, Leizer Schnitman, and J. A. M. Felippe de Souza. "Towards Intelligent Autonomous Controllers: Architecture for Industrial Distributed System." In 2017 IEEE/ACS 14th International Conference on Computer Systems and Applications (AICCSA). IEEE, 2017. http://dx.doi.org/10.1109/aiccsa.2017.71.

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Zhang, Xiaodong, Hugang Han, and Yuki Higaki. "Comparison Between Controllers of Polynomial Fuzzy Control System." In 2015 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC). IEEE, 2015. http://dx.doi.org/10.1109/cyberc.2015.18.

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Kerley, Daniel, Edward J. Park, and Jennifer Dunn. "Distributed Modeling and Decentralized H∞ Control of a Segmented Telescope Mirror." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-44145.

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In this paper a distributed dynamic model for a segmented primary mirror of an optical telescope is presented, based on the distributed modeling framework for spatially interconnected systems. The next generation of optical telescopes will employ highly segmented primary mirrors, which leads to a large-scale control problem. The distributed modeling technique allows for the design of scalable decentralized controllers that are better suited for such systems. A numerical seven segment mirror surface model is used as the benchmark system for comparing the performance between a scalable decentralized H∞ controller and a global H∞ controller. The closed-loop control simulation results show that both controllers perform comparably for the benchmark case. However when the number of the segments increases significantly (e.g. > 100) the scalable decentralized control will allow for a more tractable solution than the monolithic global control.
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Dulf, Eva-H., Daniel Timis, Lucian-Cristian Iacob, Cristina-I. Muresan, and Roxana Both-Rusu. "Fault tolerant distributed control system with robust fractional order controllers." In 2016 IEEE International Conference on Systems, Man, and Cybernetics (SMC). IEEE, 2016. http://dx.doi.org/10.1109/smc.2016.7844615.

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Ulutas, Baris, Afzal Suleman, and Edward J. Park. "Distributed and Centralized H∞ Control of Large Segmented Telescopes." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39187.

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Next generation telescopes are to employ segmented mirrors to realize extremely large primary mirror surfaces. Most of the current ground-based telescopes has monolithic mirrors with radius upto 8 metres. Due to limitations segmentation is preferred for larger size mirrors. Segmentation of mirrors brings a challenging task of controlling the vast number of individual units. In this paper, the H∞ control of the primary mirror of the next generation telescopes are investigated. Both spatially-invariant distributed and centralized controllers are designed for simplified dynamic model of a 37 segment test unit. Firstly, the 37 segment system is modelled by adopting a nodal model. Secondly, an analytic calculation of a H∞ controller is presented. A centralized H∞ controller is, then, designed and simulated in MatLab-Simulink environment. Next, the simulation results are presented and the performance of the controller is evaluated. Thirdly, spatially-invariant distributed controller synthesis is described and a spatially-invariant distributed controller is designed for 37 segment system by controller truncation. The spatially-invariant distributed controller is simulated for the 37 segment system. The simulation results of the controller is presented and compared with the results from centralized scheme. It is shown that both centralized and spatially-invariant distributed controllers satisfy the imaging performance requirements.
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Chu Cheong, Matthew K., Haiya Qian, Julia Conger, Dongmei Chen, and Pengwei Du. "Distributed ℋ∞ Frequency Control for Inverter Connected Microgrids." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5400.

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Microgrids are small-scale power networks where distributed generation and inverter interfaced power sources are common. These networks are faced with more significant control challenges; a smaller system can less effectively dampen and distribute power disturbances or fluctuations, and the system frequency is less robust without synchronous generators to provide rotational inertia. In this paper we will develop optimal control algorithms to control the voltage and frequency in an islanded inverter-based microgrid. The voltages and frequency of this system are controlled using decentralized ℋ∞ control. The decentralized controllers operate using only local data, making the control methodolgy scalable. In addition, the studied controllers can be tuned to achieve the desired transient behavior. For voltage and frequency control of microgrids, transient performance is still an area of weakness. The proposed control scheme extends optimal control to the field of microgrid control and can improve the state of microgrid technology.
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Ficocelli, Maurizio, and Foued Ben Amara. "Control System Design for Retinal Imaging Adaptive Optics Systems." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81800.

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This paper presents a solution to control system design issues for adaptive optics systems used in retinal imaging. In this paper, the control problem for adaptive optics systems is generalized to that of shape control for a flexible membrane representing a deformable membrane mirror. Due to the dynamic nature of the aberrations in the eye, the shape control problem addressed is the tracking of an unknown and time-varying shape for a distributed membrane (i.e., desired shape of the mirror). The design of a controller to achieve the shape control objective is based on a model of a distributed parameter system representing the mirror membrane. To accomplish this task, a multivariable centralized controller is utilized. Since the desired shape of the mirror is unknown and time-varying, the controller is tuned online to converge to the controller needed to achieve regulation. This is done iteratively, by taking advantage of the Q-parameterization of all stabilizing controllers, so that the controller will converge to the ideal controller. The online tuning is used to compensate for the lack of information of the desired shape for the deformable mirror.
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Shi, Linda Z., and Mohamed B. Trabia. "Comparison of Two Distributed Fuzzy Logic Controllers for Two-Link Rigid-Flexible Manipulator." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48510.

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Fuzzy logic control presents a computationally efficient and robust alternative to conventional controllers. While experts can easily design fuzzy logic controllers (FLC’s) for many applications, some systems such as multi-link flexible manipulators, which have many variables and complex behavior, offer challenges to fuzzy logic control. An earlier work, [1], presented two distributed FLC’s for a single-link flexible manipulator. This paper extends that work to the area of two-link rigid-flexible manipulator that moves in a vertical plane where the gravity field is active. The first distributed structure, which is based on observing the performance of the manipulator, uses three PD-like FLC’s. The first two FLC’s control joint angles and joint angular velocities while the third controls the tip vibration. The second distributed structure is based on evaluating the importance degrees of the system output variables of the system by randomly varying its inputs. Variables with the same rank of the importance degree are grouped together and variables with less importance degrees may be deleted to simplify the design of the controller. The fuzzy rules of FLC’s in the two structures are selected to mimic the performance of comparable linear controllers. The parameters in both structures are tuned using nonlinear programming to obtain better performance. The two distributed structures are simulated and compared.
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Reports on the topic "DISTRIBUTED CONTROLLERS SYSTEM"

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Lin, Yashen, Brian Johnson, Sairaj Dhople, Francesco Bullo, Patrick Chapman, Victor Purba, Saber Jafarpour, et al. Stabilizing the Power System in 2035 and Beyond: Evolving from Grid-Following to Grid-Forming Distributed Inverter Controllers (Final Technical Report). Office of Scientific and Technical Information (OSTI), August 2021. http://dx.doi.org/10.2172/1813971.

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Stouffer, Keith, Joe Falco, and Karen Scarfone. Guide to Industrial Control Systems (ICS) Security : Supervisory Control and Data Acquisition (SCADA) Systems, Distributed Control Systems (DCS), and Other Control System Configurations such as Programmable Logic Controllers (PLC). National Institute of Standards and Technology, May 2013. http://dx.doi.org/10.6028/nist.sp.800-82r1.

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Stouffer, Keith, Joe Falco, and Karen Scarfone. Guide to Industrial Control Systems (ICS) Security - Supervisory Control and Data Acquisition (SCADA) systems, Distributed Control Systems (DCS), and other control system configurations such as Programmable Logic Controllers (PLC). Gaithersburg, MD: National Institute of Standards and Technology, June 2011. http://dx.doi.org/10.6028/nist.sp.800.82.

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Stouffer, Keith, Joe Falco, and Karen Scarfone. Guide to Industrial Control Systems (ICS) security : Supervisory Control and Data Acquisition (SCADA) systems, Distributed Control systems (DCS), and other control system configurations such as Programmable Logic Controllers (PLC) : recommendations of the National Institute of Standards and Technology, Computer security. Gaithersburg, MD: National Institute of Standards and Technology, June 2011. http://dx.doi.org/10.6028/nist.sp.800-82.

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Hovakimyan, Naira. Reduced Order Adaptive Controllers for Distributed Parameter Systems. Fort Belvoir, VA: Defense Technical Information Center, September 2005. http://dx.doi.org/10.21236/ada438582.

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D'Andrea, Raffaello, and Geir Dullerud. Synthesis Methods for Distributed and Time Varying Controlled Systems. Fort Belvoir, VA: Defense Technical Information Center, June 2001. http://dx.doi.org/10.21236/ada388219.

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Son, Sang H., and Nipun Agarwal. Synchronization of Temporal Constructs in Distributed Multimedia Systems with Controlled Accuracy. Fort Belvoir, VA: Defense Technical Information Center, January 1994. http://dx.doi.org/10.21236/ada456034.

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Murray, W. B. Provider Needs for Distributed Simulation Education System in Total Intravenous Anesthesia and Target Controlled Infusion. Fort Belvoir, VA: Defense Technical Information Center, November 2009. http://dx.doi.org/10.21236/ada542258.

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Murray, W. B. Provider Needs for Distributed Simulation Education System in Total Intravenous Anesthesia and Target Controlled Infusion. Fort Belvoir, VA: Defense Technical Information Center, November 2008. http://dx.doi.org/10.21236/ada542263.

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Riter, Karmann, Anthony Clint Clayton, Kelley Rountree, and Prakash Doraiswamy. Solar Station for an Off-the-Grid Air Quality Sensor System. RTI Press, June 2023. http://dx.doi.org/10.3768/rtipress.2023.mr.0051.2306.

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Air quality monitoring is a rapidly growing area of citizen science, or community science (CS), thanks to the availability of low-cost sensors. Contributing to a crowdsourced data platform (e.g., http:// purpleair .com/ map) is usually easy in urban areas, where there is access to uninterrupted electricity and wireless internet (Wi-Fi). However, there are sometimes security restrictions on Wi-Fi or a lack of exterior power outlets. Also, rural regions, particularly in low- and middle-income countries, often lack electricity and Wi-Fi continuity. RTI International has designed and distributed a solar power and Wi-Fi station that can adequately power both a small air quality sensor (e.g., PurpleAir PA-II) and a Wi-Fi hotspot to overcome these challenges. The station housing can accommodate a battery, a controller, and a cell phone or another type of Wi-Fi hotspot device. This paper discusses the need for such a station; a design for the current station, including parts list; suggestions for modifications in various use cases; and design factors to consider, including amount of sunlight per day, intended number of operational days under cloudy conditions, season, and total power requirements. This method is intended to be open source and a starting point for citizen scientists and CS projects.
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