Pub Date : 1993-06-01DOI: 10.1109/ISIE.1993.268780
I. Rudas, L. Madarász, P. Holecko
The paper deals with the problem of graphical modelling of the activities of production systems with robots and manipulators. These models allow two kinds of examinations. The first one is aimed of the determination of the smallest number of elementary processing cycles of the entry of the robotic technological complexes (RTC) to ensure that no collision occurs in the course of the processing of two subsequent parts. The second task consists of examining the minimum number of elementary technological steps ( Delta t) necessary to process an individual part in the course of its passage through the RTC in the case that part X follows the preceding part Y at the entry of the RTC. The applied mathematical model is based on weighted Petri networks (WPN), introducing a transformed graphical model of the RTC, having been compiled initially at the level of elementary technological activities.<>
{"title":"Production systems modelling by means of Petri nets","authors":"I. Rudas, L. Madarász, P. Holecko","doi":"10.1109/ISIE.1993.268780","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268780","url":null,"abstract":"The paper deals with the problem of graphical modelling of the activities of production systems with robots and manipulators. These models allow two kinds of examinations. The first one is aimed of the determination of the smallest number of elementary processing cycles of the entry of the robotic technological complexes (RTC) to ensure that no collision occurs in the course of the processing of two subsequent parts. The second task consists of examining the minimum number of elementary technological steps ( Delta t) necessary to process an individual part in the course of its passage through the RTC in the case that part X follows the preceding part Y at the entry of the RTC. The applied mathematical model is based on weighted Petri networks (WPN), introducing a transformed graphical model of the RTC, having been compiled initially at the level of elementary technological activities.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123484234","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268767
L. Horváth, I. Rudas
This paper presents a new approach to introducing machine learning techniques to solve a few problems encountered in the recent CAPP systems when they applied in company practice. It shows a process planning methodology which enables application of practically applicable learning algorithms. The authors suggest four levels of learning corresponding to the four levels of process planning knowledge defined.<>
{"title":"A machine learning based approach to manufacturing process planning","authors":"L. Horváth, I. Rudas","doi":"10.1109/ISIE.1993.268767","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268767","url":null,"abstract":"This paper presents a new approach to introducing machine learning techniques to solve a few problems encountered in the recent CAPP systems when they applied in company practice. It shows a process planning methodology which enables application of practically applicable learning algorithms. The authors suggest four levels of learning corresponding to the four levels of process planning knowledge defined.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120984528","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268773
M. Ikeda, H. Hashimoto, F. Harashima
The authors have developed a wire-driven system with a linear actuator. After parameter identification as a 2-mass model, three robust control methods are tested: observer-based control, sliding mode control and H/sub infinity / control. The H/sub infinity / controller shows the best performance. Further this paper shows details of the design method of the H/sub infinity / controller.<>
{"title":"Robust control of linear DC motor using DSP","authors":"M. Ikeda, H. Hashimoto, F. Harashima","doi":"10.1109/ISIE.1993.268773","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268773","url":null,"abstract":"The authors have developed a wire-driven system with a linear actuator. After parameter identification as a 2-mass model, three robust control methods are tested: observer-based control, sliding mode control and H/sub infinity / control. The H/sub infinity / controller shows the best performance. Further this paper shows details of the design method of the H/sub infinity / controller.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132483800","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268811
B. Robyns, H. Buyse, F. Labrique
The aim of this paper is to compare the performance of two indirect field oriented control schemes. In the first one, the Park components of the stator currents are controlled by two PI regulators, and in the second one, these currents are not directly controlled and there is no current measurement. It is shown that the sensitivity of the flux control to parameter uncertainties is generally smaller in the control scheme without current controllers than in the control scheme with current PI controllers, in spite of the fact the latter offers a more precise current control. It is also shown that the control scheme without current measurement allows to develop a fully digital implementation on low cost microprocessors. Experiments on a laboratory prototype confirm the good performance of this simplified control scheme.<>
{"title":"Influence of parameter uncertainties on the performance of some induction actuator indirect field oriented control schemes","authors":"B. Robyns, H. Buyse, F. Labrique","doi":"10.1109/ISIE.1993.268811","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268811","url":null,"abstract":"The aim of this paper is to compare the performance of two indirect field oriented control schemes. In the first one, the Park components of the stator currents are controlled by two PI regulators, and in the second one, these currents are not directly controlled and there is no current measurement. It is shown that the sensitivity of the flux control to parameter uncertainties is generally smaller in the control scheme without current controllers than in the control scheme with current PI controllers, in spite of the fact the latter offers a more precise current control. It is also shown that the control scheme without current measurement allows to develop a fully digital implementation on low cost microprocessors. Experiments on a laboratory prototype confirm the good performance of this simplified control scheme.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129311960","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268722
M. Horváth, J. Borka
Inert gas welding technology with wolfram electrodes requires AC current for welding aluminium. The technology process gives special requirements to the power converter of type AC/AWI welding units suitable for welding aluminium. Namely, this requires the fast changing of the polarity of some hundred ampere DC current. The paper deals with the theoretical and experimental analysis of a circuit arrangement of a special power converter suitable for the described task. The project has been financed by the National Committee for Technical Development of Hungary.<>
{"title":"Forming some hundred ampere AC current with high rate of rise applying high frequency energy converter","authors":"M. Horváth, J. Borka","doi":"10.1109/ISIE.1993.268722","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268722","url":null,"abstract":"Inert gas welding technology with wolfram electrodes requires AC current for welding aluminium. The technology process gives special requirements to the power converter of type AC/AWI welding units suitable for welding aluminium. Namely, this requires the fast changing of the polarity of some hundred ampere DC current. The paper deals with the theoretical and experimental analysis of a circuit arrangement of a special power converter suitable for the described task. The project has been financed by the National Committee for Technical Development of Hungary.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126393262","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268715
M. Terbuc, K. Jezernik, A. Zimšek
A highly sophisticated robot controller with enhanced performance is very efficacious for laboratory use. The programming of the task in the robot task space and integration of external sensors becomes more important to the user. Available commercial robot controllers are 'black boxes' and they are unable to be modified. The authors' multiprocessor laboratory robot controller is an open system and with transputers as central processors, they achieved great processing power and very fast communication. In this way, parallel computing became possible and execution times were reduced to 1 ms. An open system of this kind allows the use of various control algorithms, the described joint acceleration controller in Cartesian space being one of them, as well as the integration of external sensors.<>
{"title":"Transputer based multiprocessor robot controller","authors":"M. Terbuc, K. Jezernik, A. Zimšek","doi":"10.1109/ISIE.1993.268715","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268715","url":null,"abstract":"A highly sophisticated robot controller with enhanced performance is very efficacious for laboratory use. The programming of the task in the robot task space and integration of external sensors becomes more important to the user. Available commercial robot controllers are 'black boxes' and they are unable to be modified. The authors' multiprocessor laboratory robot controller is an open system and with transputers as central processors, they achieved great processing power and very fast communication. In this way, parallel computing became possible and execution times were reduced to 1 ms. An open system of this kind allows the use of various control algorithms, the described joint acceleration controller in Cartesian space being one of them, as well as the integration of external sensors.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134201485","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268819
A. Wallace, R. Spée, G. C. Alexander
The paper describes a project to replace the drive of a pump in a waste water treatment facility. The existing drive has a peak output of 45 kW and is required to operate between 600 and 850 r/min which is obtained from a slip-ring wound-rotor induction motor using rotor resistive control. Of several possible electronically controlled drive configurations, the brushless doubly-fed machine has been selected for trial installation because of the advantages it appears to offer in this application.<>
{"title":"The brushless doubly-fed motor as a limited-speed-range pump drive","authors":"A. Wallace, R. Spée, G. C. Alexander","doi":"10.1109/ISIE.1993.268819","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268819","url":null,"abstract":"The paper describes a project to replace the drive of a pump in a waste water treatment facility. The existing drive has a peak output of 45 kW and is required to operate between 600 and 850 r/min which is obtained from a slip-ring wound-rotor induction motor using rotor resistive control. Of several possible electronically controlled drive configurations, the brushless doubly-fed machine has been selected for trial installation because of the advantages it appears to offer in this application.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134342907","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268795
S. Tsugawa
The author surveys the configuration, machine vision systems and driving control systems of three intelligent vehicles developed in Japan, and discusses the significance in automobile traffic of the future. The intelligent vehicle of AISI, MITI developed since the mid 1970s, has a machine vision system for obstacle detection and an autonomous navigation system based on dead reckoning on a compact car. The machine vision system is featured by real-time processing using hard-wired logic. The Personal Vehicle System (PVS), developed in the late 1980s by Fujitsu amd Nissan, is a comprehensive test system for a vision-based vehicle. The machine vision system captures lane markings at both road edges for lateral control. The PVS has another machine vision system for obstacle detection. An intelligent automobile, named the Automated Highway Vehicle System (AHVS), developed by Toyota is capable of lane-keeping using machine vision. The three vehicles drove at 10-60 km/h. The possibility of solution of automobile traffic problems such as traffic accidents, congestion, and pollution using intelligent vehicles is discussed.<>
{"title":"Vision-based vehicles in Japan: the machine vision systems and driving control systems","authors":"S. Tsugawa","doi":"10.1109/ISIE.1993.268795","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268795","url":null,"abstract":"The author surveys the configuration, machine vision systems and driving control systems of three intelligent vehicles developed in Japan, and discusses the significance in automobile traffic of the future. The intelligent vehicle of AISI, MITI developed since the mid 1970s, has a machine vision system for obstacle detection and an autonomous navigation system based on dead reckoning on a compact car. The machine vision system is featured by real-time processing using hard-wired logic. The Personal Vehicle System (PVS), developed in the late 1980s by Fujitsu amd Nissan, is a comprehensive test system for a vision-based vehicle. The machine vision system captures lane markings at both road edges for lateral control. The PVS has another machine vision system for obstacle detection. An intelligent automobile, named the Automated Highway Vehicle System (AHVS), developed by Toyota is capable of lane-keeping using machine vision. The three vehicles drove at 10-60 km/h. The possibility of solution of automobile traffic problems such as traffic accidents, congestion, and pollution using intelligent vehicles is discussed.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127671759","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268747
A. Abdulaziz, M. Farsi
The paper describes a new neural network Controller using an IMC structure (NIMC). The structure is suitable for control of discrete-time SISO systems containing nonlinearities. Two design steps are assumed: (1) the controller is designed for optimal set-point tracking and disturbance rejection or model uncertainty and (2) the controller is detuned for robust performance. Comparative studies between NIMC and a conventional nonlinear adaptive controller is made.<>
{"title":"Dynamic modelling and control for a class of non-linear systems using neural nets","authors":"A. Abdulaziz, M. Farsi","doi":"10.1109/ISIE.1993.268747","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268747","url":null,"abstract":"The paper describes a new neural network Controller using an IMC structure (NIMC). The structure is suitable for control of discrete-time SISO systems containing nonlinearities. Two design steps are assumed: (1) the controller is designed for optimal set-point tracking and disturbance rejection or model uncertainty and (2) the controller is detuned for robust performance. Comparative studies between NIMC and a conventional nonlinear adaptive controller is made.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131228872","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 : 1993-06-01DOI: 10.1109/ISIE.1993.268801
Y. Dote, M. Strefezza, A. Suyitno
The authors describe and approximate zeroing with an equivalent disturbance observer and predictive controller for drive systems. Then this linear controller structure is changed by fuzzy logic such that the controller makes the system respond quickly if the error is large and vice versa in order to obtain a robust controller which is insensitive to both the plant noise and the observation noise. Next, a variable structure PI controller by fuzzy logic for the drive systems is introduced. Then, this control scheme is implemented with neural networks. These controllers are realized with digital signal processors. The experimental results are given. Lastly, the applications of neuro fuzzy methods to inverters, converters, motion controls and sensors are explained.<>
{"title":"Neuro fuzzy robust controllers for drive systems","authors":"Y. Dote, M. Strefezza, A. Suyitno","doi":"10.1109/ISIE.1993.268801","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268801","url":null,"abstract":"The authors describe and approximate zeroing with an equivalent disturbance observer and predictive controller for drive systems. Then this linear controller structure is changed by fuzzy logic such that the controller makes the system respond quickly if the error is large and vice versa in order to obtain a robust controller which is insensitive to both the plant noise and the observation noise. Next, a variable structure PI controller by fuzzy logic for the drive systems is introduced. Then, this control scheme is implemented with neural networks. These controllers are realized with digital signal processors. The experimental results are given. Lastly, the applications of neuro fuzzy methods to inverters, converters, motion controls and sensors are explained.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131259414","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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