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Horizon-1 predictive control of networked controlled vehicle drivetrains

IFAC Proceedings Volumes 2011年第1期44卷 3824-3830页

作者： C.F. Caruntu M. Lazar S. Di Cairano R.H. Gielen P.P.J. van den Bosch Department of Automatic Control and Applied Informatics “Gheorghe Asachi” Technical University of Iasi Romania Department of Electrical Engineering Eindhoven University of Technology The Netherlands Ford Research and Adv. Engineering Dearborn MI USA

Abstract Design of a controller that damps driveline oscillations, while compensating network-induced time-varying delays, can be a challenging problem considering that vehicle drivetrains are characterized by fast dynamics that are subject to physical and control constraints. As such, the goal of this paper is to provide a control design methodology that can cope with all these challenges and limitations and still yield an effective solution. To this end, firstly, a method for determining a worst case upper bound on the delays that can be introduced by a controller Area Network (CAN) is presented. Then, a polytopic approximation technique is applied to obtain a discrete-time model of the closed-loop CAN system. Thirdly, a horizon-1 predictive controller based on flexible control Lyapunov functions is designed for the resulting model with polytopic uncertainty and hard constraints. Several tests performed on a benchmark model indicate that the proposed design methodology can handle both the performance/physical constraints and the strict limitations on the computational complexity.

关键词： Vehicle drivetrain Oscillations damping Networked control systems Predictive control Lyapunov methods

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High resolution 6 channels pulse width modulator for FPGA-based AC motor control

High resolution 6 channels pulse width modulator for FPGA-ba...

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International Conference on Applied Electronics, AE

作者： Bogdan Alecsa Alin Tisan Marcian Cirstea Automatic Control and Applied Informatics Department Gh. Asachi Technical University of Iasi Romania Computing and Technology Department Anglia Ruskin University Cambridge UK

This paper presents a 6 channels pulse width modulator with high resolution. The modulator is designed for three phase AC drives control. It is targeted for low cost FPGA implementation, and uses the special clock management units present in the FPGA. The modulator is verified first by measurements on one channel. Then it is used for open loop starting of a three phase induction motor, thus verifying the correct operation as a whole.

关键词： Synchronization Multiplexing Pulse width modulation Field programmable gate arrays Radiation detectors Delay

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An efficient FPGA implementation of the space vector modulation algorithm

An efficient FPGA implementation of the space vector modulat...

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International Symposium on Signals, Circuits and Systems (ISSCS)

作者： Bogdan Alecsa Alexandru Onea Marcian Cirstea Automatic Control and Applied Informatics Department Gheorghe Asachi Technical University of Iasi Iasi Romania Computing and Technology Department Anglia Ruskin University Cambridge UK

This paper presents an optimized FPGA controller based on the space vector modulation algorithm. The novel system is used for the current control of three phase electric machines fed by three phase voltage source inverters. The modeling and simulation was carried out in Matlab Simulink, using the System Generator software. The algorithm parameters can easily be adjusted for different requirements. The design was implemented into a low cost FPGA device. Implementation performance in terms of area and speed is presented and compared to other controllers in the literature. Experimental results verify the correct operation of the system.

关键词： Field programmable gate arrays Support vector machines Inverters Pulse width modulation Algorithm design and analysis Switches

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Hierarchical control scheme for voltage unbalance compensation in islanded microgrids

Hierarchical control scheme for voltage unbalance compensati...

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Annual Conference of Industrial Electronics Society

作者： Mehdi Savaghebi Josep M. Guerrero Alireza Jalilian Juan C. Vasquez Center of Excellence for Power System Automation and Operation Iran University of Science and Technology Iran Department of Automatic Control and Industrial Informatics Technical University of Catalonia Spain Institute of Energy Technology Aalborg University Denmark

The concept of microgrid hierarchical control is presented, recently. In this paper, a hierarchical scheme which includes primary and secondary control levels is proposed for islanded microgrids. The primary control level consists of DG local controllers. Local controller of each DG comprises active and reactive power controllers, virtual impedance loop and voltage and current controllers. The secondary level is designed to compensate the voltage unbalance at the load bus (LB) of the islanded microgrid. Also, restoration of LB voltage amplitude and microgrid frequency to the rated values is considered in the secondary level. These functions are achieved by proper control of distributed generators (DGs) interface converters. The presented simulation results show the effectiveness of the proposed control structure in compensating the voltage unbalance and restoring the voltage amplitude and system frequency.

关键词： Voltage control Reactive power Impedance Frequency control Inverters Erbium control systems

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Secondary control for voltage unbalance compensation in an islanded microgrid

Secondary control for voltage unbalance compensation in an i...

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IEEE International Conference on Smart Grid Communications (SmartGridComm)

作者： Mehdi Savaghebi Josep M. Guerrero Alireza Jalilian Juan C. Vasquez Center of Excellence for Power System Automation and Operation Iran University of Science and Technology Iran Department of Automatic Control and Industrial Informatics Technical University of Catalonia Spain Department of Energy Technology University of Aalborg Denmark

In this paper, the concept of secondary control is applied for voltage unbalance compensation in an islanded microgrid. The aim of the proposed control approach is to enhance the voltage quality at the point of common coupling (PCC). Unbalance compensation is achieved by proper control of distributed generators (DGs). The DGs control structure mainly consists of active and reactive power controllers, virtual impedance loop and voltage and current proportional-resonant controllers. Simulation results are presented for different cases. The results show the effectiveness of the proposed approach in the compensation of voltage unbalance.

关键词： Voltage control Reactive power Impedance Inverters control systems Band pass filters Frequency control

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Anthropomimetic robot with passive compliance - Contact dynamics and control

Anthropomimetic robot with passive compliance - Contact dyna...

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Mediterranean Conference on control and Automation (MED)

作者： Veljko Potkonjak Bratislav Svetozarevic Kosta Jovanovic Owen Holland Faculty of Electrical Engineering University of Belgrade Belgrade Serbia University of Belgrade Serbia Automatic Control Laboratory Swiss Federal Institute of Technology Zurich Switzerland School of Informatics University of Sussex Brighton UK

This paper develops a dynamic model and designs a controller for a fully anthropomorphic, compliantly driven robot. To imitate muscles, the robot's joints are actuated by DC motors antagonistically coupled through tendons. To facilitate safe interaction with humans, the robot exploits passive mechanical compliance, in the form of elastic springs in the tendons. To enable simulation, the paper first derives a mathematical model of the robot's dynamics, starting from the "Flier" approach. The control of the antagonistic drives uses a biologically inspired puller-and-follower concept where at any instant the puller is responsible for the joint motion while the follower keeps the inactive tendon from slackening. In designing the controller, it was first necessary to use the advanced theory of nonlinear control for dealing with individual joints, and then to apply robust control theory in order to extend control to the multi-joint robot body.

关键词： Joints Robots Tendons Mathematical model Gravity Dynamics

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Assessment of the impact of an interfering signal on the results of partial discharge measurements obtained using acoustic emission method

Assessment of the impact of an interfering signal on the res...

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39th International Congress on Noise control Engineering 2010, INTER-NOISE 2010

作者： Zmarzly, D. Boczar, T. Borucki, S. Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Poland

ISBN: (纸本)9781617823961

This paper discusses the problems connected with frequency analysis and multiple signal classification (MUSIC) of disturbances that can accompany the measurements of partial discharges in industrial conditions using the acoustic emission method. It presents different kinds of interfering signals that can deform the measured acoustic emission signals generated by partial discharges in electric power devices. It also presents the choices and characterizes the sources simulating disturbances in laboratory conditions. In addition, it includes the results of the measurements and frequency and MUSIC analyses of interfering signals in the form of power density spectra and of pseudo-spectrum and the values of the descriptors that characterize them. The summary part describes the influence of interfering signals on acoustic emission pulses generated by partial discharges.

关键词： Partial discharges

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Comparative analysis of magnetostrictive vibrations of various power transformer

Comparative analysis of magnetostrictive vibrations of vario...

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39th International Congress on Noise control Engineering 2010, INTER-NOISE 2010

作者： Boczar, T. Borucki, S. Zmarzy, D. Opole University of Technology Faculty of Electrical Engineering Automatic Control and Informatics Poland

ISBN: (纸本)9781617823961

Results of a frequency, time-frequency and correlational analysis of transformer core vibrations generated by magnetostriction are presented in the paper. Magnetostrictive vibrations constitute a source of acoustic interferential signals that can influence the proper interpretation of acoustic emission signals measured during partial discharge generation in paper-oil insulation of electric power transformers. The analysis considers magnetostrictive vibrations in various power transformers. In addition the influence of the compression force acting on transformer laminated core assembly on the achieved results will be determined. Results of the correlational analysis, build on the coherence function, for acoustic interferential signals invoked together with acoustic signal pulses emitted during surface partial discharges will be presented in the paper summary.

关键词： Partial discharges

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Experimental evaluation of voltage unbalance compensation in an islanded microgrid

Experimental evaluation of voltage unbalance compensation in...

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Mehdi Savaghebi Josep M. Guerrero Alireza Jalilian Juan C. Vasquez Islamic Azad University Iran Department of Automatic Control and Industrial Informatics Technical University of Catalonia Spain Department of Energy Technology University of Aalborg Denmark Center of Excellence for Power System Automation and Operation Iran University of Science and Technology Iran

In this paper, a method for voltage unbalance compensation in an islanded microgrid based on the proper control of distributed generators (DGs) interface converter is proposed. In this method, active and reactive power control loops are considered to control the power sharing among the DGs. Also, a virtual impedance loop and voltage and current proportional-resonant controllers are included. Experimental results show the effectiveness of the proposed method for compensating voltage unbalance to an acceptable level.

关键词： Voltage control Inverters Reactive power Impedance Mathematical model control systems Band pass filters

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Solving of non-stationary heat transfer in a plane plate

Solving of non-stationary heat transfer in a plane plate

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13th WSEAS International Conference on automatic control, Modelling and Simulation, ACMOS'11

作者： Janáčová, Dagmar Charvátová, Hana Kolomazník, Karel Vašek, Vladimír Mokrejš, Pavel Department of Automatic Control Faculty of Applied Informatics Tomas Bata University in Zlin Nám. T. G. Masaryka 5555 760 01 Zlín Czech Republic Protein and Leather Department Faculty of Technology Tomas Bata University in Zlin Nám. T. G. Masaryka 5555 760 01 Zlín Czech Republic

ISBN: (纸本)9781618040046

In this paper we present software application destined for study of heat transfer problems that is a part of education of subject Process engineering taught at the Tomas Bata university in Zlin. The application we use as a teaching aid for calculation and visualization of temperature distribution in the plane plate body during its heating or cooling. Calculation accuracy of our application enables it to be used for real engineering computing.

关键词： Application programs

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