Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975881
H. Lam, T. Lee, F. Leung, P. Tam
This paper presents the fuzzy control of a PWM (pulse width modulation) boost DC-DC switching power converter based on the Takagi-Sugeno (TS) fuzzy modeling approach. The stability and robustness of the fuzzy controlled DC-DC converter are analyzed. Hardware results on regulating the boost DC-DC converter by a fuzzy controller are given and compared to those by a traditional PI controller.
{"title":"Fuzzy control of DC-DC switching converters: stability and robustness analysis/sup 1/","authors":"H. Lam, T. Lee, F. Leung, P. Tam","doi":"10.1109/IECON.2001.975881","DOIUrl":"https://doi.org/10.1109/IECON.2001.975881","url":null,"abstract":"This paper presents the fuzzy control of a PWM (pulse width modulation) boost DC-DC switching power converter based on the Takagi-Sugeno (TS) fuzzy modeling approach. The stability and robustness of the fuzzy controlled DC-DC converter are analyzed. Hardware results on regulating the boost DC-DC converter by a fuzzy controller are given and compared to those by a traditional PI controller.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126869964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.976521
Y. Takahashi, J. Ogawa, K. Saeki
A robot system to pick a tomatoes automatically using an easy-to-operate user interface is proposed in this paper A 3D-movement robotic arm with a hand system is used as the mechanical system. The hand system is composed of a scissor device and a CCD camera. The user can monitor the operation using the CCD camera linked to a personal computer, and can operate the robot system using only the user interface of a personal computer display. It is possible to implement remote control operations using the proposed system. The operational flow is as follows. A user searches for a tomato using the velocity operation mode. After the user has found the tomato on the display, he clicks on it. The computer system recognizes the red color of the tomato, and then calculates the position of the tomato on the display. Next, the calculated position moves to the center of the operation window. The movement means that the robot hand moves to the corresponding position of the tomato. Finally, the robot hand picks the tomato automatically. The validity of the proposed robot system was confirmed by experimental results.
{"title":"Automatic tomato picking robot system with human interface using image processing","authors":"Y. Takahashi, J. Ogawa, K. Saeki","doi":"10.1109/IECON.2001.976521","DOIUrl":"https://doi.org/10.1109/IECON.2001.976521","url":null,"abstract":"A robot system to pick a tomatoes automatically using an easy-to-operate user interface is proposed in this paper A 3D-movement robotic arm with a hand system is used as the mechanical system. The hand system is composed of a scissor device and a CCD camera. The user can monitor the operation using the CCD camera linked to a personal computer, and can operate the robot system using only the user interface of a personal computer display. It is possible to implement remote control operations using the proposed system. The operational flow is as follows. A user searches for a tomato using the velocity operation mode. After the user has found the tomato on the display, he clicks on it. The computer system recognizes the red color of the tomato, and then calculates the position of the tomato on the display. Next, the calculated position moves to the center of the operation window. The movement means that the robot hand moves to the corresponding position of the tomato. Finally, the robot hand picks the tomato automatically. The validity of the proposed robot system was confirmed by experimental results.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"35 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120884200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.976707
O. Almeida, A. Coelho
In this paper, the design of a dead-time (DT) controller is presented to control a nonlinear and long dead-time heating tunnel plant. The new control design uses the Smith predictor (SP) to compensate the dead-time, the PID control law as a primary controller and a filter. Both, PID and filter parameters, may be changed to improve robustness aspects of the closed-loop system. Due to the nonlinear characteristic of the plant, the combination of slow and fast models is used for modeling purposes of the process in the SP design. The relay feedback method is implemented to tune the primary PID controller. According to experiments, on a heating tunnel, the SP control system provides an efficient solution to deal with long dead-time plants even if the plant is modeled by a high-order transfer function.
{"title":"Robust tuning of a dead-time compensator","authors":"O. Almeida, A. Coelho","doi":"10.1109/IECON.2001.976707","DOIUrl":"https://doi.org/10.1109/IECON.2001.976707","url":null,"abstract":"In this paper, the design of a dead-time (DT) controller is presented to control a nonlinear and long dead-time heating tunnel plant. The new control design uses the Smith predictor (SP) to compensate the dead-time, the PID control law as a primary controller and a filter. Both, PID and filter parameters, may be changed to improve robustness aspects of the closed-loop system. Due to the nonlinear characteristic of the plant, the combination of slow and fast models is used for modeling purposes of the process in the SP design. The relay feedback method is implemented to tune the primary PID controller. According to experiments, on a heating tunnel, the SP control system provides an efficient solution to deal with long dead-time plants even if the plant is modeled by a high-order transfer function.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124992771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975970
I. Nojima, I. Takano, Y. Sawada
The fuel cell (FC) system is one of preferable power sources with high energy conversion efficiency, considering the environmental problems associated with energy consumption. However the output of the FC system cannot respond the transient shock of the sudden change of the effective and reactive load demands in the utility system. In order to compensate these shocks, a new-type hybrid electric power distributed source consisting of a FC system coupled with a superconducting magnetic energy storage system (SMES) is proposed in this paper. The SMES system can also contribute to the compensation of effective and reactive power demand fluctuation in the power distributed system. This FC/SMES hybrid system is connected with the existing utility line by a bi-directional power converter, and contributes to the compensation of sudden load change in the local existing power distribution line. The transient performance simulation was carried out using circuit analysis software PSIM in order to examine the effectiveness of the above-mentioned FC/SMES hybrid system for eliminating the influence of transient shock. In addition, it was also confirmed by circuit simulation using PSIM that this hybrid system is effective for reducing transient influence caused by sudden change of effective and reactive load demands.
{"title":"Transient performance of a new-type hybrid electric power distributed system with fuel cell and SMES","authors":"I. Nojima, I. Takano, Y. Sawada","doi":"10.1109/IECON.2001.975970","DOIUrl":"https://doi.org/10.1109/IECON.2001.975970","url":null,"abstract":"The fuel cell (FC) system is one of preferable power sources with high energy conversion efficiency, considering the environmental problems associated with energy consumption. However the output of the FC system cannot respond the transient shock of the sudden change of the effective and reactive load demands in the utility system. In order to compensate these shocks, a new-type hybrid electric power distributed source consisting of a FC system coupled with a superconducting magnetic energy storage system (SMES) is proposed in this paper. The SMES system can also contribute to the compensation of effective and reactive power demand fluctuation in the power distributed system. This FC/SMES hybrid system is connected with the existing utility line by a bi-directional power converter, and contributes to the compensation of sudden load change in the local existing power distribution line. The transient performance simulation was carried out using circuit analysis software PSIM in order to examine the effectiveness of the above-mentioned FC/SMES hybrid system for eliminating the influence of transient shock. In addition, it was also confirmed by circuit simulation using PSIM that this hybrid system is effective for reducing transient influence caused by sudden change of effective and reactive load demands.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114281964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.976015
R. Erickson, O. Al-Naseem
A new family of matrix converters is introduced, that employs relatively simple voltage-clamped buses and can generate multilevel voltage waveforms of arbitrary magnitude and frequency. The basic configuration includes a nine-switch matrix that uses four-quadrant switch cells. Each four-quadrant switch cell resembles a full-bridge inverter and can assume three voltage levels during conduction. Semiconductor devices in a switch cell are clamped to a known constant DC voltage of a capacitor. Control of the input and output voltage waveforms of the proposed converter can be achieved through space vector modulation. Simulation results show how the converter can operate with any input and output voltages, currents, frequencies, and power factors while maintaining constant DC voltages across all switch cell capacitors.
{"title":"A new family of matrix converters","authors":"R. Erickson, O. Al-Naseem","doi":"10.1109/IECON.2001.976015","DOIUrl":"https://doi.org/10.1109/IECON.2001.976015","url":null,"abstract":"A new family of matrix converters is introduced, that employs relatively simple voltage-clamped buses and can generate multilevel voltage waveforms of arbitrary magnitude and frequency. The basic configuration includes a nine-switch matrix that uses four-quadrant switch cells. Each four-quadrant switch cell resembles a full-bridge inverter and can assume three voltage levels during conduction. Semiconductor devices in a switch cell are clamped to a known constant DC voltage of a capacitor. Control of the input and output voltage waveforms of the proposed converter can be achieved through space vector modulation. Simulation results show how the converter can operate with any input and output voltages, currents, frequencies, and power factors while maintaining constant DC voltages across all switch cell capacitors.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122819419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975966
Mahmoud Azab, Á. Orille
In this paper a quasi-parallel resonant inverter is used to implement the DTC strategy of induction motor drive to obtain a high performance AC drive. This scheme combines the advantages of quasi-parallel resonant inverter (operation at high switching frequency, high efficiency, and reduced EMI) and those of the DTC (good dynamic performance and fast response of torque and flux). The DC link voltage is pulled down to zero when any inverter switch has to change its switching state. Thus, the DTC algorithm can be implemented with zero hysteresis band of both torque and flux controllers to enhance the DTC performance. Simulation and experimental verification are presented. Good trace of motor torque and flux are obtained.
{"title":"Implementation of direct torque control of AC drive with synchronized notched DC link voltage","authors":"Mahmoud Azab, Á. Orille","doi":"10.1109/IECON.2001.975966","DOIUrl":"https://doi.org/10.1109/IECON.2001.975966","url":null,"abstract":"In this paper a quasi-parallel resonant inverter is used to implement the DTC strategy of induction motor drive to obtain a high performance AC drive. This scheme combines the advantages of quasi-parallel resonant inverter (operation at high switching frequency, high efficiency, and reduced EMI) and those of the DTC (good dynamic performance and fast response of torque and flux). The DC link voltage is pulled down to zero when any inverter switch has to change its switching state. Thus, the DTC algorithm can be implemented with zero hysteresis band of both torque and flux controllers to enhance the DTC performance. Simulation and experimental verification are presented. Good trace of motor torque and flux are obtained.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122858048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975997
Tian‐Hua Liu, Der-fa Chen
This paper proposes a new control algorithm for a matrix converter PMSM position control system. First, a new switching strategy is proposed to reduce the current harmonics of the permanent magnet synchronous motor. Next, a two-degree-of-freedom controller is proposed to improve the system performance. The parameters of this controller are obtained by using frequency-domain optimization technique. The controller design procedures require only algebraic computation. In addition, the realization of the controller is very simple. All the control loops, including current-loop, speed-loop, and position-loop, are implemented by a 32-bit TMS320C40 digital signal processor. The hardware, therefore, is very simple. Several experimental results are shown to validate the theoretical analysis.
{"title":"Implementation of a matrix converter PMSM position control system","authors":"Tian‐Hua Liu, Der-fa Chen","doi":"10.1109/IECON.2001.975997","DOIUrl":"https://doi.org/10.1109/IECON.2001.975997","url":null,"abstract":"This paper proposes a new control algorithm for a matrix converter PMSM position control system. First, a new switching strategy is proposed to reduce the current harmonics of the permanent magnet synchronous motor. Next, a two-degree-of-freedom controller is proposed to improve the system performance. The parameters of this controller are obtained by using frequency-domain optimization technique. The controller design procedures require only algebraic computation. In addition, the realization of the controller is very simple. All the control loops, including current-loop, speed-loop, and position-loop, are implemented by a 32-bit TMS320C40 digital signal processor. The hardware, therefore, is very simple. Several experimental results are shown to validate the theoretical analysis.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128106504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975538
S. Ichikawa, Zhiqian Chen, M. Tomita, S. Doki, S. Okuma
Permanent magnet synchronous motors have been widely used in industrial applications for their high efficiency. To control permanent magnet synchronous motors, knowledge of rotor position and velocity is necessary. However, position sensors are expensive and mechanically bulky. Although many sensorless control methods have been proposed, but these schemes used approximations for simplification of the mathematical model, which may lead to unstable problems at certain conditions. To solve this problem, the sensorless control based on an extended electromotive force model has been proposed in this paper. The proposed method has been verified by experiments.
{"title":"Sensorless control of an interior permanent magnet synchronous motor on the rotating coordinate using an extended electromotive force","authors":"S. Ichikawa, Zhiqian Chen, M. Tomita, S. Doki, S. Okuma","doi":"10.1109/IECON.2001.975538","DOIUrl":"https://doi.org/10.1109/IECON.2001.975538","url":null,"abstract":"Permanent magnet synchronous motors have been widely used in industrial applications for their high efficiency. To control permanent magnet synchronous motors, knowledge of rotor position and velocity is necessary. However, position sensors are expensive and mechanically bulky. Although many sensorless control methods have been proposed, but these schemes used approximations for simplification of the mathematical model, which may lead to unstable problems at certain conditions. To solve this problem, the sensorless control based on an extended electromotive force model has been proposed in this paper. The proposed method has been verified by experiments.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133166701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.976467
S. Malkhandi, S. Sinha, K. Muthukumar
A radial basis function based learning system method has been proposed for estimation of state of charge (SOC) of lead acid battery. Coulomb metric method is used for SOC estimation with correction factor computed by radial basis function method. Radial basis function based technique is used for learning battery performance variation with time and other parameters. Experimental results are included.
{"title":"Estimation of state of charge of lead acid battery using radial basis function","authors":"S. Malkhandi, S. Sinha, K. Muthukumar","doi":"10.1109/IECON.2001.976467","DOIUrl":"https://doi.org/10.1109/IECON.2001.976467","url":null,"abstract":"A radial basis function based learning system method has been proposed for estimation of state of charge (SOC) of lead acid battery. Coulomb metric method is used for SOC estimation with correction factor computed by radial basis function method. Radial basis function based technique is used for learning battery performance variation with time and other parameters. Experimental results are included.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133556189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975950
K. Higuchi, K. Nakano, K. Araki, F. Chino
A robust PWM power amplifier whose transient response characteristics do not deteriorate against an extensive load change and/or direct-current power-supply voltage change is needed. In this paper, a method for designing a digital robust controller for PWM power amplifier which can satisfy such demands is proposed. First, a nominal model of PWM power amplifiers which consists of a PWM signal generating part, an electric power conversion part and an LC filter is derived from the linear approximation. The controlled objective is described by the discrete-time systems with consideration of the input dead time. It is shown that a digital controller can be designed in almost the same way as the previously proposed analog controller and then a 2-degree-of-freedom digital robust systems are constituted. The LC filter and the digital controller which satisfy the design specifications are determined by the proposed design method. A DSP is implemented for the digital controller obtained here. It is shown from an experiment that sufficiently robust digital control systems are realizable.
{"title":"The robust control of PWM power amplifier by the approximate 2-degree-of-freedom digital integral-type control system","authors":"K. Higuchi, K. Nakano, K. Araki, F. Chino","doi":"10.1109/IECON.2001.975950","DOIUrl":"https://doi.org/10.1109/IECON.2001.975950","url":null,"abstract":"A robust PWM power amplifier whose transient response characteristics do not deteriorate against an extensive load change and/or direct-current power-supply voltage change is needed. In this paper, a method for designing a digital robust controller for PWM power amplifier which can satisfy such demands is proposed. First, a nominal model of PWM power amplifiers which consists of a PWM signal generating part, an electric power conversion part and an LC filter is derived from the linear approximation. The controlled objective is described by the discrete-time systems with consideration of the input dead time. It is shown that a digital controller can be designed in almost the same way as the previously proposed analog controller and then a 2-degree-of-freedom digital robust systems are constituted. The LC filter and the digital controller which satisfy the design specifications are determined by the proposed design method. A DSP is implemented for the digital controller obtained here. It is shown from an experiment that sufficiently robust digital control systems are realizable.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133990294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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