Pub Date : 2001-11-29DOI: 10.1109/IECON.2001.975887
F. Hernandez, T. Moran, J. Espinoza, J. Dixon
A generalized control scheme that allows the operation as an active filter and/or frequency changer in active front-end multilevel converters is proposed and analyzed in this paper. The basics characteristics of the proposed control scheme is that permits the operation of the converter in four quadrants, giving full control on the active and reactive power and current harmonics absorbed by the converter. The control scheme is designed for the application in multilevel converters. The control scheme is described in terms of principles of operations, and the operation in the four quadrant regions. Simulated results are proved on a laboratory prototype of 10 kVA.
{"title":"A generalized control scheme for active front-end multilevel converters","authors":"F. Hernandez, T. Moran, J. Espinoza, J. Dixon","doi":"10.1109/IECON.2001.975887","DOIUrl":"https://doi.org/10.1109/IECON.2001.975887","url":null,"abstract":"A generalized control scheme that allows the operation as an active filter and/or frequency changer in active front-end multilevel converters is proposed and analyzed in this paper. The basics characteristics of the proposed control scheme is that permits the operation of the converter in four quadrants, giving full control on the active and reactive power and current harmonics absorbed by the converter. The control scheme is designed for the application in multilevel converters. The control scheme is described in terms of principles of operations, and the operation in the four quadrant regions. Simulated results are proved on a laboratory prototype of 10 kVA.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"1 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":"129393516","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.2001.975566
R. Wall, B. A. King
Smart sensors and distributed control use networks to expand the area of knowledge and influence. A spatially variable center pivot irrigation control system has been developed that uses four different network media to communicate between control nodes and to smart sensors. A single efficient network protocol orchestrates the instrumentation and control information flow. Low cost nodes implement the required control, collect data from sensors and serve as network bridges to pass data from one network media to another. Performance benchmarks demonstrate the capacity for instrumentation and control.
{"title":"Tiered control networks","authors":"R. Wall, B. A. King","doi":"10.1109/IECON.2001.975566","DOIUrl":"https://doi.org/10.1109/IECON.2001.975566","url":null,"abstract":"Smart sensors and distributed control use networks to expand the area of knowledge and influence. A spatially variable center pivot irrigation control system has been developed that uses four different network media to communicate between control nodes and to smart sensors. A single efficient network protocol orchestrates the instrumentation and control information flow. Low cost nodes implement the required control, collect data from sensors and serve as network bridges to pass data from one network media to another. Performance benchmarks demonstrate the capacity for instrumentation and control.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"4 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":"131217665","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.2001.975544
S. Komada, K. Iyama, K. Yubai, T. Hori
Two-mass systems are shown as a model of two masses connected by a spring and often seen in mechanical systems. PID control, resonance ratio control, H/sup /spl infin// control, and etc. have been applied to the two-mass systems. Conventional controllers that use a disturbance observer for two-inertia systems are adopted. A systematic parameter design method for the systems is proposed, where a load variation, Coulomb friction, and fast and precise control are considered. For limit cycle due to friction, a suppression condition of limit cycle is derived by an analysis using a describing function method. For load variation, robust stability for time varying system with structured uncertainty is guaranteed by the quadratic stability. Moreover, nominal performance is improved by maximizing the smallest eigen value of control system under the above restrictions. Effectiveness is confirmed by some simulations and experiments.
{"title":"Suppression of limit cycle and improvement of robust performance in two-mass resonant systems with nonlinearity","authors":"S. Komada, K. Iyama, K. Yubai, T. Hori","doi":"10.1109/IECON.2001.975544","DOIUrl":"https://doi.org/10.1109/IECON.2001.975544","url":null,"abstract":"Two-mass systems are shown as a model of two masses connected by a spring and often seen in mechanical systems. PID control, resonance ratio control, H/sup /spl infin// control, and etc. have been applied to the two-mass systems. Conventional controllers that use a disturbance observer for two-inertia systems are adopted. A systematic parameter design method for the systems is proposed, where a load variation, Coulomb friction, and fast and precise control are considered. For limit cycle due to friction, a suppression condition of limit cycle is derived by an analysis using a describing function method. For load variation, robust stability for time varying system with structured uncertainty is guaranteed by the quadratic stability. Moreover, nominal performance is improved by maximizing the smallest eigen value of control system under the above restrictions. Effectiveness is confirmed by some simulations and experiments.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"3 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":"130978538","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.2001.976569
T.H. Lee, H.K. Lam, F. Leung, P.K.S. Tam
This paper describes the design and development of a path planning method for Micro Robot Soccer Tournament (MIROSOT). Every object in the stadium is given a working layer which is decomposed into a fixed number of small areas. We propose to assign values to different small areas of the layer according to the object's movement. The final path is obtained by combining the small areas of the layers and getting the path with the smallest values. Since the host computer uses only a simple equation to calculate the value of each small area, this algorithm requires only a low computing power, and the speed of path generation is very fast. A simulation program was developed to test the algorithm's performance.
{"title":"A path planning method for microrobot soccer game","authors":"T.H. Lee, H.K. Lam, F. Leung, P.K.S. Tam","doi":"10.1109/IECON.2001.976569","DOIUrl":"https://doi.org/10.1109/IECON.2001.976569","url":null,"abstract":"This paper describes the design and development of a path planning method for Micro Robot Soccer Tournament (MIROSOT). Every object in the stadium is given a working layer which is decomposed into a fixed number of small areas. We propose to assign values to different small areas of the layer according to the object's movement. The final path is obtained by combining the small areas of the layers and getting the path with the smallest values. Since the host computer uses only a simple equation to calculate the value of each small area, this algorithm requires only a low computing power, and the speed of path generation is very fast. A simulation program was developed to test the algorithm's performance.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"112 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":"132744597","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.2001.976470
B. Wilamowski, D. Bell, S. Legowski, Y. Abdelkader
A novel two stage mass filter where the first stage operates in DC/RF mode and second in RF only mode is proposed. This design can be characterized by very high mass resolution and may not require high precision mechanical and electronic design. An ion detector by integrating a VLSI chip with a Faraday cup is described. Extremely low biasing currents, differential and narrow frequency band operation resulted in significant improvement of the signal to noise ratio.
{"title":"Enhancing the sensitivity of miniaturized quadrupole mass spectrometers","authors":"B. Wilamowski, D. Bell, S. Legowski, Y. Abdelkader","doi":"10.1109/IECON.2001.976470","DOIUrl":"https://doi.org/10.1109/IECON.2001.976470","url":null,"abstract":"A novel two stage mass filter where the first stage operates in DC/RF mode and second in RF only mode is proposed. This design can be characterized by very high mass resolution and may not require high precision mechanical and electronic design. An ion detector by integrating a VLSI chip with a Faraday cup is described. Extremely low biasing currents, differential and narrow frequency band operation resulted in significant improvement of the signal to noise ratio.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"15 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":"128884095","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.2001.976492
D. Shima, S. Hata, I. Ishimaru
Handling of micro-objects about 0.1 mm square is essential in the fields of bio-technology and micro-machine production. These operations have some difficulty because it requires the unnatural hands manipulations under the microscopic images. So the productivity of those operations is not high. To solve these problems, a 3-D software camera system has been introduced. The system consists of two subsystems those are the 3-D entire shape model with texture extraction system and the stereo image generation system. Here, the method of 3-D model extraction system using mufti-directional camera and its calibration system are introduced, then the system has been introduced to the bio-production system. In the paper, the experimental attempt to the real problem is described.
{"title":"3-D vision systems for micro-operation and its application","authors":"D. Shima, S. Hata, I. Ishimaru","doi":"10.1109/IECON.2001.976492","DOIUrl":"https://doi.org/10.1109/IECON.2001.976492","url":null,"abstract":"Handling of micro-objects about 0.1 mm square is essential in the fields of bio-technology and micro-machine production. These operations have some difficulty because it requires the unnatural hands manipulations under the microscopic images. So the productivity of those operations is not high. To solve these problems, a 3-D software camera system has been introduced. The system consists of two subsystems those are the 3-D entire shape model with texture extraction system and the stereo image generation system. Here, the method of 3-D model extraction system using mufti-directional camera and its calibration system are introduced, then the system has been introduced to the bio-production system. In the paper, the experimental attempt to the real problem is described.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"75 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":"127198143","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.2001.976710
Kok-Kiong Tan, Sunan Huang, R. Ferdous
We propose a robust self-tuning PID controller suitable for nonlinear systems. The control system employs a preload relay (P_Relay) in series with a PID controller. The P_Relay ensures a high gain to yield a robust performance. However, it also incurs a chattering phenomenon. In this paper, instead of viewing the chattering as an undesirable yet inevitable feature, we use it as a naturally occurring signal for tuning and re-tuning the PID controller as the operating regime digresses. No other explicit input signal is required. Once the PID controller is tuned for a particular operating point, the relay may be disabled and chattering ceases correspondingly. However, it is invoked when there is a change in set-point to another operating regime. In this way, the approach is also applicable to time-varying systems as the PID tuning can be continuous, based on the latest set of chattering characteristics. Simulation results for the level control of fluid in a spherical tank using the scheme are also presented.
{"title":"Robust self-tuning PID controller for nonlinear systems","authors":"Kok-Kiong Tan, Sunan Huang, R. Ferdous","doi":"10.1109/IECON.2001.976710","DOIUrl":"https://doi.org/10.1109/IECON.2001.976710","url":null,"abstract":"We propose a robust self-tuning PID controller suitable for nonlinear systems. The control system employs a preload relay (P_Relay) in series with a PID controller. The P_Relay ensures a high gain to yield a robust performance. However, it also incurs a chattering phenomenon. In this paper, instead of viewing the chattering as an undesirable yet inevitable feature, we use it as a naturally occurring signal for tuning and re-tuning the PID controller as the operating regime digresses. No other explicit input signal is required. Once the PID controller is tuned for a particular operating point, the relay may be disabled and chattering ceases correspondingly. However, it is invoked when there is a change in set-point to another operating regime. In this way, the approach is also applicable to time-varying systems as the PID tuning can be continuous, based on the latest set of chattering characteristics. Simulation results for the level control of fluid in a spherical tank using the scheme are also presented.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"212 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":"114351215","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.2001.976458
T. Nishi, T. Takagi
We propose a collision avoidance algorithm for a driving support system. This algorithm always observes whether a vehicle is inside the safety limit, and starts controlling the vehicle in the place of the human driver just before going into the dangerous zone where even the system cannot avoid collision. The inputs to the vehicle are the accelerator, the brakes and the steering wheel. The system controls the vehicle by three inputs. The vehicles communicate the three state data, the speed, the position of the coordinates and the direction, with each other. The algorithm derives the best movement to avoid a collision without control data of the other vehicle. In the end, the vehicles avoid collision at the limit of the safety distance and time. In this paper, we give explanations of the algorithm process, and inspection results with a simulator.
{"title":"A proposal of collision avoidance algorithm for driving support system","authors":"T. Nishi, T. Takagi","doi":"10.1109/IECON.2001.976458","DOIUrl":"https://doi.org/10.1109/IECON.2001.976458","url":null,"abstract":"We propose a collision avoidance algorithm for a driving support system. This algorithm always observes whether a vehicle is inside the safety limit, and starts controlling the vehicle in the place of the human driver just before going into the dangerous zone where even the system cannot avoid collision. The inputs to the vehicle are the accelerator, the brakes and the steering wheel. The system controls the vehicle by three inputs. The vehicles communicate the three state data, the speed, the position of the coordinates and the direction, with each other. The algorithm derives the best movement to avoid a collision without control data of the other vehicle. In the end, the vehicles avoid collision at the limit of the safety distance and time. In this paper, we give explanations of the algorithm process, and inspection results with a simulator.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"267 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":"114565801","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.2001.975556
H. Izurni, H. Murakoshi, H. Mori, K. Sakamaki, Y. Hatano, T. Shirai, S. Murayama, T. Ugajin
This paper proposes a new web-based training system for the experiment of the digital circuits. In the hardware experiment, it is very important that the student can operate measuring instruments and observe signals from the circuits. WBT system is the server (the teacher) and client (the student) model. The client computer with the hardware training board is connected to the server on WWW. The training board consists of a field programmable gate array (FPGA) and measuring instruments. The student can investigate signals from the training board. The server can provide various contents by reconfiguring the FPGA. The teacher can monitor the behavior of the student by using Joint Test Action Group (JTAG) technology.
{"title":"Proposal of the web-based training system for the experiment of the digital circuit","authors":"H. Izurni, H. Murakoshi, H. Mori, K. Sakamaki, Y. Hatano, T. Shirai, S. Murayama, T. Ugajin","doi":"10.1109/IECON.2001.975556","DOIUrl":"https://doi.org/10.1109/IECON.2001.975556","url":null,"abstract":"This paper proposes a new web-based training system for the experiment of the digital circuits. In the hardware experiment, it is very important that the student can operate measuring instruments and observe signals from the circuits. WBT system is the server (the teacher) and client (the student) model. The client computer with the hardware training board is connected to the server on WWW. The training board consists of a field programmable gate array (FPGA) and measuring instruments. The student can investigate signals from the training board. The server can provide various contents by reconfiguring the FPGA. The teacher can monitor the behavior of the student by using Joint Test Action Group (JTAG) technology.","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":"115055032","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.2001.976549
R. Wai, Rou-Yong Duan, Li-Jung Chang
This study mainly focuses on the development of an uncertainty predictor based on the grey theory as a possible solution to improve the shortcoming of the traditional feedback linearization control scheme. Moreover, the newly designed grey feedback linearization control system is implemented for an indirect field-oriented induction servo motor drive to track periodic speed commands. In the proposed control system, a grey uncertainty predictor is designed to adjust the lumped uncertainty existing in the induction servo motor drive into a feedback linearization control law on line. In addition, the effectiveness of the proposed control scheme is verified by both the simulated and experimental results. With the proposed control system, the controlled induction servo motor drive possesses the advantages of good tracking control performance and robustness to uncertainties.
{"title":"Grey feedback linearization speed control for induction servo motor drive","authors":"R. Wai, Rou-Yong Duan, Li-Jung Chang","doi":"10.1109/IECON.2001.976549","DOIUrl":"https://doi.org/10.1109/IECON.2001.976549","url":null,"abstract":"This study mainly focuses on the development of an uncertainty predictor based on the grey theory as a possible solution to improve the shortcoming of the traditional feedback linearization control scheme. Moreover, the newly designed grey feedback linearization control system is implemented for an indirect field-oriented induction servo motor drive to track periodic speed commands. In the proposed control system, a grey uncertainty predictor is designed to adjust the lumped uncertainty existing in the induction servo motor drive into a feedback linearization control law on line. In addition, the effectiveness of the proposed control scheme is verified by both the simulated and experimental results. With the proposed control system, the controlled induction servo motor drive possesses the advantages of good tracking control performance and robustness to uncertainties.","PeriodicalId":345608,"journal":{"name":"IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243)","volume":"100 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":"115066953","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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