{"title":"Suppression control of harmonics by switching route connection in distribution systems","authors":"H. Ukai, K. Nakamura, K. Ohnishi, N. Matsui","doi":"10.1109/IECON.2003.1280284","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280284","url":null,"abstract":"With recent currency of power electronics devices, the harmonic pollution in power system becomes serious problem. On the other hand, as recent utility power distribution system becomes broader and more complex, advanced harmonic measurement and analysis technologies are required. This paper presents the harmonic modeling based on the synchronized measurement system of harmonics at multi-points in wide area distribution system and the harmonic suppression method based on the route control in the network. The route control, which is based on the decentralized autonomous control theory, is achieved by switching the transmission route or inserting the phase modifier to change the harmonic flow in distribution system. The basic concept of this idea is represented by an example study.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122015044","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}
{"title":"Autonomous decentralized control for formation of multiple mobile-robots considering ability of robot","authors":"H. Takahashi, K. Ohnishi","doi":"10.1109/IECON.2003.1280557","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280557","url":null,"abstract":"The studies about multiple mobile robots have been developed. Formation control is an important theme since it is applicable in various themes. \"Leader-following\" strategy is a suitable method for controlling multiple mobile robots in formation. It is because it is easy to control robots and to express a formation of robots. But in this strategy, it is difficult to consider the ability gap of a robot like human being. In respect of autonomous decentralized control, it is important to control robots in most suitable formation considering the ability of a robot. Each robot has to be controlled by each controller according to the ability. The purpose of this study is to control multiple mobile robots in formation considering the ability of a robot using \"leader-following\" strategy. At first, new idea which is called performance index is defined and new controller is proposed based on performance index. Second, compliance controller using a virtual repulsion is suggested in this paper, so that each robot can avoid collision. Finally simulation results show the validity of the proposed method.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115324823","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}
{"title":"A power-assisted wheelchair taking running environment into account","authors":"T. Miyazawa, S. Katsura, K. Ohnishi","doi":"10.1109/IECON.2003.1280252","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280252","url":null,"abstract":"Developing a selfdrive wheelchair, one cannot judge that the power assist system which can expand operator's field of activities, is indispensable element. In addition, this condition has not satisfied the user demand, since the same assistant rate is applied in all environments. Considering the production cost, it is unnecessary to develop a power-assisted wheelchair with more sensor, which is considered in this paper. That is to say, the purpose of this research is to realize sensorless power assist and adapt to environment by considering production cost. Consequently, first realization method of sensorless power assist is proposed. Next, necessity of making the system of wheelchair variable based on inclination information is mentioned. In this paper, the validity of the proposed method is confirmed and its application is introduced.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125321985","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}
{"title":"An improved design procedure for LCC resonant filter of dimmable electronic ballasts for fluorescent lamps, based on lamp model","authors":"F. T. Wakabayashi, C. Canesin","doi":"10.1109/IECON.2003.1280656","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280656","url":null,"abstract":"This paper presents an improved design methodology for determining the parameters used in the classical series-parallel loaded resonant (SPLR) filter employed in the switching frequency controlled dimmable electronic ballasts. According to the analysis developed in this paper, it is possible to evaluate some characteristics of the resonant filter during the dimming process, such as: range of switching frequency, phase shift and rms value of the current drained by the resonant filter + fluorescent lamp set.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128152540","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}
{"title":"A real time GPRS surveillance system using the embedded system","authors":"Chin-E. Lin, Chih-Ching Li","doi":"10.1109/IECON.2003.1280228","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280228","url":null,"abstract":"As for data surveillance, the general packet radio service (GPRS) is the best candidate for always-on connection to any moving vehicles or individuals from the ground up to a few thousand feet above ground. Due to the inherent characteristics of GPRS, the client circuit design requires a central processing unit (CPU) with an appropriate operating system (OS) to activate point-to-point protocol (PPP) as well as IP addressed transmission control protocol (TCP/IP). This paper presents a system designed for clients to carry out GPRS connection, and send GPS and other data to a server system. For surveillance purpose, a geographic information system (GIS) is applied to track the clients on the electronic map. The system architecture and design concept are discussed. Circuit implementation and real world tests are demonstrated and verified. The data transmission delay is estimated within 0.75 seconds, while the surveillance period can be controlled from 5 to 120 seconds. The proposed system has been tested in ground vehicles to ultra light aircraft at 1000 feet with most areas in Taiwan.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123294681","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}
S. Hashimoto, K. Ohishi, T. Ohishi, T. Ishikawa, K. Kosaka, Y. Egashira, H. Kubota, T. Ohmi
{"title":"Development of an ultra-precision stage control system using nonresonant ultrasonic motor","authors":"S. Hashimoto, K. Ohishi, T. Ohishi, T. Ishikawa, K. Kosaka, Y. Egashira, H. Kubota, T. Ohmi","doi":"10.1109/IECON.2003.1280249","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280249","url":null,"abstract":"This paper presents the development of an ultra-precision stage control system by introducing the nonresonant ultrasonic motor (NRUSM). System identification experiments are carried out considering the fundamental characteristic of NRUSM. The friction, which affects the accuracy of the positioning, is evaluated. Then the relation between the friction and the control bandwidth is experimentally examined. Using the frictional property as well as the identified model, the position control system with friction compensation is designed. Moreover, for its design the anti-windup-based wide band control is performed. Thus, the effectiveness of the identified model and the designed control system is verified by simulations and experiments.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132654818","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}
{"title":"An approach to absolute position control of mobile robot by PSD based robust control","authors":"T. Sugawara, T. Murakami","doi":"10.1109/IECON.2003.1280559","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280559","url":null,"abstract":"The purpose of this research is to realize an absolute position control of mobile robot. Several researches with respect to position control of mobile robot considering its nonholonomic constraints have already reported. They are so powerful, but there are still some issues to improve the control performance. First, the disturbances such as wheel slip, modeling error, and so on deteriorate the position response. So the disturbances suppression should be considered. Second, it is difficult to predetermine the trajectory to reach the desired position because of the nonholonomic constraints. To improve the performance of the position convergence, it is strongly required to develop the trajectory generation algorithm independently of the nonholonomic constraints. In the proposed approach, the absolute position detected by PSD is used to construct the robust position controller. Furthermore, the virtual forces to swing the mobile robot and to modify its orientation are arbitrarily generated to guarantee the convergence to the desired position even if the position response is affected by slip motion or uneven floor. Several numerical and experimental results are shown to verify the validity of the proposed approach.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127866362","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}
{"title":"A new method of temperature control for the uniform heating","authors":"N. Matsunaga, I. Nanno, M. Tanaka, S. Kawaji","doi":"10.1109/IECON.2003.1280566","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280566","url":null,"abstract":"Uniform temperature control of heating plate, which has a wide thermal conduction area, is required in many industrial application fields. In this paper, a new method of uniform temperature control is proposed based on an idea of quasi-decoupling. The feature of the proposed method is easy to design a control system without the precise plant dynamics. The controller is designed using the gradient and average of temperature among the arbitrary points. The effectiveness of the proposed control method is confirmed by experiment.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132245000","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}
{"title":"Design indices for information connection in decentralized system","authors":"K. Akuzawa, K. Ohnishi","doi":"10.1109/IECON.2003.1280623","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280623","url":null,"abstract":"A decentralized system, consists of multiple subsystems is expected to adapt to the various environmental condition or the alteration of the internal system. In this paper, informational interaction among subsystems in the whole system is considered from a view point of system connection. Based on it, framework of the design method in decentralized system is discussed for variable structure of information connection. In order to express the system connection, a connection matrix is adopted. Using it, a reachability matrix, which shows a hierarchy and a closed- loop structure, is derived. Moreover, the maximum eigenvalue and its eigenvector of connection matrix are adopted as the design indices for the system connection, which has loop structures. In addition, the structural analysis method is described for recognizing and designing the informational loop structure.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133086824","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}
M. Morisawa, T. Tsuji, Y. Nishioka, K. Akuzawa, H. Takahashi, K. Ohnishi
{"title":"Contact motion in unknown environment","authors":"M. Morisawa, T. Tsuji, Y. Nishioka, K. Akuzawa, H. Takahashi, K. Ohnishi","doi":"10.1109/IECON.2003.1280116","DOIUrl":"https://doi.org/10.1109/IECON.2003.1280116","url":null,"abstract":"This paper describes a contact motion in unknown environment. It is required to take in a kinematic and a dynamic information of unknown environment in order to utilize for control of contact motion. However, an environmental information is obtained only after the robot contacts with environment. Hence, it is difficult to enhance the robustness of the force for contact motion. The design method with the clear characteristic of a contact motion will be required. In this paper, two examples of typical contact motion control are shown. One is a bilateral control and the other is a control of a paddle foot for biped walking. Both controllers are based on acceleration control and the characteristic of systems are clarified by using Hadamard matrix. In order to improve the prospect of the system, the information of environmental mode is quarried by using Hadamard matrix. Modal transmission from environment to the final posture should change adaptively according to the situation. The viability of these approaches for contact motion is shown in numerical simulations.","PeriodicalId":403239,"journal":{"name":"IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132038076","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}