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IEEE International Conference on automation, Quality and Testing, Robotics, AQTR

作者： T. Szelitzky E. H. Dulf Department of Automatic Control Faculty of Automation and Computer Science Technical University of Cluj Napoca Romania

ISBN: (纸本)9781424467242;9781424467228

The goal of this paper is to present the advantages of robust control in comparison with classic control techniques. Pulse amplitude modulation induction heating inverter with series resonant load circuit with uncertainties is presented for heating nonferrous metals. Inverters performance with robust and PI control will be compared.

关键词： Robust control Pulse inverters Pulse modulation Amplitude modulation Inductors Heating Resistors Bridge circuits RLC circuits Magnetic materials

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A Preventive Security-Constrained Optimal Power Flow with Hybrid Genetic-Ant Colony Optimization

A Preventive Security-Constrained Optimal Power Flow with Hy...

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2010 International Symposium on computer,Communication, control and automation

作者： Yi-Ming Tsao Chung-Chi Huang Jing-Fung Lin Department of Automation and Control Engineering Far East University Department of Computer Application Engineering Far East University

This paper presents preventive security-constrained optimal power flow (PSCOPF) with hybrid genetic-ant colony optimization (HGACO) is presented The PSCOPF can be divided into three steps involving security analysis,severest event selection,and preventive ***,Novel security analysis will be conducted before fault occurred in the system by current-based power flow ***,ranking method will be used to highlight the most severe event caused by the specific *** finally,a preventive algorithm will make use of the contingency information,and could be kept the operator system security and avoided congestion when fault *** HGACO is integrated with genetic algorithm and ant colony optimization,and the objective of GA is to improve the searching quality of ants by optimizing themselves to generate a better result,because the ants produced randomly by pheromone process are not necessary *** method can not only enhance the neighborhood search,but can also search the optimum solution quickly to advance convergence.

关键词： optimal power flow preventive securityconstrained OPF hybrid genetic-ant colony optimization,genetic algorithm,ant colony optimization.

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Hardware particle swarm optimization based on the attractive-repulsive scheme for embedded applications

Hardware particle swarm optimization based on the attractive...

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2010 International Conference on Reconfigurable Computing and FPGAs, ReConFig 2010

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos S. Coelho, Leandro Ayala-Rincón, Mauricio Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia DF Brazil Industrial and Systems Engineering Graduate Program LAS/PPGPES Pontifical Catholic University of Parana Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia DF Brazil

ISBN: (纸本)9780769543147

Particle Swarm Optimization (PSO) algorithms have been proposed to solve engineering problems that require to find an optimal point of operation. However, the PSO algorithm suffers from premature convergence and high elapsed time when solving multimodal and large scale engineering problems. This problem becomes an evident drawback for embedded applications in which the microcontrollers often operates at low computational capacity. This paper proposes a hardware implementation of a parallel self-adaptive PSO algorithm based on an attractive-repulsive scheme and using the efficient floating-point arithmetic which performs computations with large dynamic range and high precision. The parallel capabilities of the PSO are exploited by implementing parallel particles directly in hardware in order to decrease the running time. In addition, the attractive-repulsive technique avoids the premature convergence problem by self-adapting the swarm behavior according to its diversity. Synthesis and simulation results for benchmark test problems were performed, demonstrating the correctness of the proposed architectures. Finally, an elapsed time comparison between the hardware and software implementations shows the suitableness of the proposed architecture for embedded applications. © 2010 IEEE.

关键词： Global optimization

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Preface

Communications and Control Engineering

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Communications and control Engineering 2011年第9780857292551期 vii-xi页

作者： Sun, Zhendong Ge, Shuzhi Sam College Automation Science & Engineering Center for Control and Optimization South China University of Technology Guangzhou510640 China Robotics Institue and Institute of Intelligent Systems and Information Technology University of Electronic Science and Technology of China Chengdu China Department of Electrical and Computer Engineering The National University of Singapore Singapore Singapore

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Accelerating the Shuffled Frog Leaping algorithm by parallel implementations in FPGAs

Accelerating the Shuffled Frog Leaping algorithm by parallel...

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2010 IEEE 5th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2010

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos S. Coelho, Leandro Ayala-Rincón, Mauricio Department of Mechanical Engineering Automation and Control Group/GRACG University of Brasilia Brasilia D.F. Brazil Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia D.F. Brazil

ISBN: (纸本)9781424464388

Meta-heuristics are efficient techniques for solving large scale optimization problems in which traditional mathematical techniques are impractical or provide sub-optimal solutions. The Shuffled Frog Leaping algorithm (SFLA) is a stochastic iterative method, bio-inspired on the memetic evolution of a group of frogs when seeking for food, which combines the social behavior-based of the particle swarm optimization technique (PSO) and the global information exchange of memetic algorithms. However, the SFLA algorithm suffers on large execution times, being this problem clearly evident when solving complex optimization problems for embedded applications. This drawback can be overcome by exploiting the parallel capabilities of the SFLA. This paper proposes a hardware parallel implementation of the SFLA algorithm (HPSFLA) using FPGAs (Field Programmable gate Arrays) and the efficient floating-point arithmetic. The proposed architecture allows the SFLA to improve the functionality of the algorithm as well as to decrease the execution times by implementing parallel frogs and parallel memeplexes. Three well-known benchmark problems have been used to validate the implemented algorithm and simulation results demonstrate that the HPSFLA speeds-up by factors of 362, 727 and 211 a C-code implementation using an embedded microprocessor for the Sphere, Rastrigin and Rosenbrock benchmarks problems, respectively. Synthesis, simulation and execution time results demonstrate the effectiveness of the proposed HPSFLA architecture for embedded optimization systems. © 2010 IEEE.

关键词： Global optimization

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SoC-based Software-Hardware codesign of intelligent diagnosis

SoC-based Software-Hardware codesign of intelligent diagnosi...

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International Symposium on computer Communication control and automation (3CA)

作者： Chung-Chi Huang Kuan-Chen Lin Cong-Hui Huang Hsin-Pu Lin Cheng-Wei Liu Department of Automation and Control Engineering Far East University Tainan Taiwan Department of Computer Application Engineering Far East University Tainan Taiwan

ISBN: (纸本)9781424455652;9781424455669

This study develops and implements a SoC-based HW/SW (Hardware-Software) codesign for an intelligent diagnostic system. To improve the efficiency of the VLSI (Very Large Scale Integration) design process, the components of the intelligent diagnostic system are designed in the form of SIP (Silicon Intellectual Property) modules. The SIP modules, including the CPU module, the GPIO (General Purpose I/O) module and the NN (Neural Network) module, are then integrated to form the complete intelligent diagnostic system. In constructing the system, an embedded processor is employed to run software programs. In addition to integrating the hardware architecture, this study also develops application software, comprising a bootloader, a UARTcomm module and a main program for human-machine interface, to drive the embedded processor. The SoC-based HW/SW codesign method employed in this study increases the efficiency of the system design process and reduces the rebuild time. The results of the experimental trials verify the successful performance of the developed intelligent diagnostic system.

关键词： Competitive intelligence Intelligent systems Very large scale integration Neural networks Process design Silicon Intellectual property Intelligent networks Embedded software Hardware

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Sliding-mode controller for Four-Wheel-Steering Vehicle: Trajectory-Tracking Problem

Sliding-mode Controller for Four-Wheel-Steering Vehicle: Tra...

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The 8th World Congress on Intelligent control and automation(第八届智能控制与自动化世界大会 WCICA 2010)

作者： Adrian Filipescu Razvan Solea Silviu Filipescu Bogdan Dumitrascu Department of Automation and Industrial Informatics University “Dunarea de Jos” of Galati Domneasca Master student in Intelligent Control Systems at the Faculty of Computer Science PhD student in Control Systems at the Faculty of Computer Science

A solution to trajectory-tracking control problem for a four-wheel-steering vehicle (4WS) is proposed using sliding-mode approach. The advantage of this controller over current control procedure is that it is applicable to a large class of vehicles with single or double steering and to a tracking velocity that is not necessarily constant. The sliding-mode approach make the solutions robust with respect to errors and disturbances, as demonstrated by the simulation results.

关键词： Wheels Trajectory Kinematics Mobile robots Bicycles

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Vehicle modeling for integrated control design

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Periodica Polytechnica Transportation Engineering 2010年第1期38卷 45-51页

作者： Németh, Balázs Gáspár, Péter Department of Control and Transport Automation BME Bertalan L. u. 2. H-1111 Budapest Hungary Systems and Control Laboratory Computer and Automation Research Institute MTA Kende u. 13-17 H-1111 Budapest Hungary

This paper comprises the control-oriented modeling of an integrated vehicle system including powertrain, brake, active suspension and steering components. As the first step, the models of a vehicle are formalized. In the powertrain model the nonlinearities of an engine with thermodynamical and fluid mechanical features are considered. In the model of suspension the dynamics of sprung mass (body) and unsprung masses (e.g., wheels) are considered. In the brake system the necessary hydraulic pressure required for the desired brake power is determined. The pressure fluctuation arising from the skewness of brake disc during the rotation is distributed. The mechanical construction of electronic steering system is also dealt with. The model of the vehicle handles the effects of road and wind disturbances. Matlab/Simulink, CarSim and GT-Suite GT-Power are used during the simulations. Matlab/Simulink is a perfect tool for control design and a fast analysis of the operation of the controlled system. CarSim is a widely used vehicle dynamic simulator used wide-spread;GT-Power is a complex powertrain modeling program. Both are used for validating Matlab models. © Periodica Polytechnica 2010.

关键词： Simulink

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A preventive security-constrained optimal power flow with hybrid genetic-ant colony optimization

A preventive security-constrained optimal power flow with hy...

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International Symposium on computer Communication control and automation (3CA)

作者： Cong-Hui Huang Yi-Ming Tsao Chung-Chi Huang Jing-Fung Lin Kuan-Chen Lin Bo-Lin Wu Department of Automation and Control Engineering Far East University Tainan Taiwan Department of Computer Application Engineering Far East University Tainan Taiwan

ISBN: (纸本)9781424455652;9781424455669

This paper presents preventive security-constrained optimal power flow (PSCOPF) with hybrid genetic-ant colony optimization (HGACO) is presented The PSCOPF can be divided into three steps involving security analysis, severest event selection, and preventive algorithm. First, Novel security analysis will be conducted before fault occurred in the system by current-based power flow technique. Second, ranking method will be used to highlight the most severe event caused by the specific facility. And finally, a preventive algorithm will make use of the contingency information, and could be kept the operator system security and avoided congestion when fault occurred. The HGACO is integrated with genetic algorithm and ant colony optimization, and the objective of GA is to improve the searching quality of ants by optimizing themselves to generate a better result, because the ants produced randomly by pheromone process are not necessary better. This method can not only enhance the neighborhood search, but can also search the optimum solution quickly to advance convergence.

关键词： Load flow Power system security Ant colony optimization Accidents Data security Genetic algorithms Power generation Communication system security automation Information security

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control design for road-friendly suspension systems using an optimal weighting of LQ theorem

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Periodica Polytechnica Transportation Engineering 2010年第2期38卷 61-66页

The paper comprises the control design of a road-friendly suspension system and the optimal choice of linear quadratic (LQ) weighting. By designing the influence of the dynamic loads of wheels it is possible to reduce the loads and stresses of roads and increase their lifespan. In the vehicle model the dynamics of the sprung and unsprung masses with their suspension system is considered. For road-friendly control design it is necessary to guarantee the reduction of the dynamic load of wheels. Besides, it is also important to guarantee passenger comfort and road stability of the vehicle. Considering these performances an active suspension system based on the LQ control theory is designed. Taking into consideration the effects of the variations in the weighting values of quality performances the properties of controlled system are analyzed in terms of road-friendliness and traveling comfort. The used LQ theorem and optimal weighting method are practicable for both active and semi-active suspension systems. © 2010 Periodica Polytechnica.

关键词： Dynamic loads

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