Pub Date : 1993-06-01DOI: 10.1109/ISIE.1993.268829
P. A. Shavrin
The author discusses the control of an induction motor. The proposed approach is based on decoupling the stator current vector into both colinear and orthogonal components to the rotor flux vector. These components are the scalar and vector products of some parameters and rotor flux vector. The control problem where new parameters are control inputs is considered. The problems of designing the torque, speed and rotor position controllers are investigated.<>
{"title":"Nonlinear torque control of induction motor","authors":"P. A. Shavrin","doi":"10.1109/ISIE.1993.268829","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268829","url":null,"abstract":"The author discusses the control of an induction motor. The proposed approach is based on decoupling the stator current vector into both colinear and orthogonal components to the rotor flux vector. These components are the scalar and vector products of some parameters and rotor flux vector. The control problem where new parameters are control inputs is considered. The problems of designing the torque, speed and rotor position controllers are investigated.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"89 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":"124153682","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.1993.268717
C. Ozsoy, R. Kazan
A multi-input multi-output (MIMO) controlled auto regressive integrated moving average (CARIMA) model which has the input vector consisting of the joint torques and the output vector consisting of the velocities of the gripper expressed in the world coordinate system, is proposed for the motion of the end-effector of a robotic manipulator system. Since the manipulator is a time-varying system, because of changing of the load and the friction between the joints the proposed MIMO model parameters are updated recursively online by the least squares (RLS) algorithm. A self-tuning type predictive controller is then designed by minimizing a quadratic performance criterion which includes the position error of the gripper and the energy associated with the torque vector, to control the position of the end-effector. The performance of the predictive controller is tested under varying operating conditions by digital simulation studies.<>
{"title":"Cartesian base predictive control of robotic manipulators","authors":"C. Ozsoy, R. Kazan","doi":"10.1109/ISIE.1993.268717","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268717","url":null,"abstract":"A multi-input multi-output (MIMO) controlled auto regressive integrated moving average (CARIMA) model which has the input vector consisting of the joint torques and the output vector consisting of the velocities of the gripper expressed in the world coordinate system, is proposed for the motion of the end-effector of a robotic manipulator system. Since the manipulator is a time-varying system, because of changing of the load and the friction between the joints the proposed MIMO model parameters are updated recursively online by the least squares (RLS) algorithm. A self-tuning type predictive controller is then designed by minimizing a quadratic performance criterion which includes the position error of the gripper and the energy associated with the torque vector, to control the position of the end-effector. The performance of the predictive controller is tested under varying operating conditions by digital simulation studies.<<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":"114340374","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.1993.268831
K. Veszprémi
Two new aspects of field oriented control, related to transients are described. One of them is the analysis of energy consumed during transients. An energy optimizing theory is developed, and its practical implementation is proposed. The other is the effect of the speed sampling lag time during transients, which can totally destroy indirect field orientation. An adaptive algorithm is developed to compensate its effect by estimating the real speed. The theory is confirmed by measurements. The implemented drive is fully digitalized, the algorithms are supported by the TMS32010 digital signal processor (DSP).<>
{"title":"Field oriented control of CSI-fed induction motor drive using DSP","authors":"K. Veszprémi","doi":"10.1109/ISIE.1993.268831","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268831","url":null,"abstract":"Two new aspects of field oriented control, related to transients are described. One of them is the analysis of energy consumed during transients. An energy optimizing theory is developed, and its practical implementation is proposed. The other is the effect of the speed sampling lag time during transients, which can totally destroy indirect field orientation. An adaptive algorithm is developed to compensate its effect by estimating the real speed. The theory is confirmed by measurements. The implemented drive is fully digitalized, the algorithms are supported by the TMS32010 digital signal processor (DSP).<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"14 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":"114804475","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.1993.268749
J. L. Crespo, E. Mora, J. Peire
In order to test neural network abilities as estimators of engineering value, a network is presented to derive streamflow from precipitation data. Validation tests show good performance, hence increasing confidence in these methods. Monthly mean squared errors remaining after adjustment are presented and compared with those of deterministic methods, since these are other options for the estimation problem. A possible caveat of artificial neural networks (ANN) is that they are very difficult to interpret. Interpretation of the learnt representation in this case is offered by simulating with selected inputs, showing reasonable results and providing some insight in the hydrologic process being modeled. This is a generic possibility for dealing with black-box models. When estimating some system's behavior it is interesting to know whether the qualitative representation is also faithful. In the proposed example, special properties of the flow series with significance in hydrology, such as ranges, are obtained and compared with the sample values, along with other statistical features.<>
{"title":"Estimation performance of neural networks","authors":"J. L. Crespo, E. Mora, J. Peire","doi":"10.1109/ISIE.1993.268749","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268749","url":null,"abstract":"In order to test neural network abilities as estimators of engineering value, a network is presented to derive streamflow from precipitation data. Validation tests show good performance, hence increasing confidence in these methods. Monthly mean squared errors remaining after adjustment are presented and compared with those of deterministic methods, since these are other options for the estimation problem. A possible caveat of artificial neural networks (ANN) is that they are very difficult to interpret. Interpretation of the learnt representation in this case is offered by simulating with selected inputs, showing reasonable results and providing some insight in the hydrologic process being modeled. This is a generic possibility for dealing with black-box models. When estimating some system's behavior it is interesting to know whether the qualitative representation is also faithful. In the proposed example, special properties of the flow series with significance in hydrology, such as ranges, are obtained and compared with the sample values, along with other statistical features.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"32 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":"124488668","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.1993.268750
I. Tunay, O. Kaynak
A new variable structure control method for uncertain nonlinear systems in a normal form is presented. Combining simple predictive ideas with adaptation, both robustness and high output tracking performance is achieved in electric motor control applications.<>
{"title":"A provident approach for variable structure control (for electric motors)","authors":"I. Tunay, O. Kaynak","doi":"10.1109/ISIE.1993.268750","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268750","url":null,"abstract":"A new variable structure control method for uncertain nonlinear systems in a normal form is presented. Combining simple predictive ideas with adaptation, both robustness and high output tracking performance is achieved in electric motor control applications.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"61 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":"128290963","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.1993.268776
Mariusz Nieniewski, M. Kosicka
The paper presents the mathematical background for the simulation of the adaptive model following control (AMFC) of the speed of the permanent magnet DC motor. The chosen reference model is of the first order, whereas the speed control system is of the fourth order. As these orders are different, it is not possible to use the theory of AMFC systems without further investigation. The paper presents simulation results which take into account the unmodeled dynamics of the speed control system. The results obtained confirm superiority of the AMFC system over the nonadaptive system of speed control.<>
{"title":"AMFC of the DC motor speed","authors":"Mariusz Nieniewski, M. Kosicka","doi":"10.1109/ISIE.1993.268776","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268776","url":null,"abstract":"The paper presents the mathematical background for the simulation of the adaptive model following control (AMFC) of the speed of the permanent magnet DC motor. The chosen reference model is of the first order, whereas the speed control system is of the fourth order. As these orders are different, it is not possible to use the theory of AMFC systems without further investigation. The paper presents simulation results which take into account the unmodeled dynamics of the speed control system. The results obtained confirm superiority of the AMFC system over the nonadaptive system of speed control.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"87 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":"127035806","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.1993.268786
James MacCormac
The authors describe how research is currently being undertaken in the Electrical Engineering Department at the University of Zimbabwe in conjunction with the University of Bath with a view to automating the tobacco grading process. The objective of the research is to provide a reliable grading tool to the industry which will give a uniform grading standard across the country. In addition it is intended to increase throughput and provide quantification of the variation in tobacco leaf quality. The heart of the automatic grading system is a high-speed online image processing system developed to process images at a field rate of 50 Hz. The image processing is performed by Texas Instruments TMS 320-E-25 microprocessors operating in a parallel configuration.<>
作者描述了津巴布韦大学电气工程系目前如何与巴斯大学合作进行研究，以期使烟草分级过程自动化。研究的目的是为行业提供一个可靠的评分工具，这将在全国范围内给出统一的评分标准。此外，它还旨在提高产量并提供烟叶质量变化的量化。自动分级系统的核心是一个高速在线图像处理系统，该系统是为处理50赫兹的图像而开发的。图像处理由德州仪器tms320 - e -25微处理器并行运行
{"title":"On-line image processing for tobacco grading in Zimbabwe","authors":"James MacCormac","doi":"10.1109/ISIE.1993.268786","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268786","url":null,"abstract":"The authors describe how research is currently being undertaken in the Electrical Engineering Department at the University of Zimbabwe in conjunction with the University of Bath with a view to automating the tobacco grading process. The objective of the research is to provide a reliable grading tool to the industry which will give a uniform grading standard across the country. In addition it is intended to increase throughput and provide quantification of the variation in tobacco leaf quality. The heart of the automatic grading system is a high-speed online image processing system developed to process images at a field rate of 50 Hz. The image processing is performed by Texas Instruments TMS 320-E-25 microprocessors operating in a parallel configuration.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"123 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":"127054056","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.1993.268751
V. I. Dvornikov, A.A. Belotserkovsky, V. Barinberg, V. Levin
This paper includes a basic study of the operating performance of a load commutated power converter drive with AC excitation. Such a drive scheme is well-suited for mine winder modernisation, because to apply this system to an existing winder, a new motor is not required. Electromagnetic phenomena in the stator and rotor circuits of the drive is described by a set of nonlinear differential equations. Using simplified analytical solutions of the motor equations under steady-state conditions, calculation formulae are obtained that give a complete set of steady state performance characteristics of the drive.<>
{"title":"A study of induction slip-ring motor drive system using load-commutated converter","authors":"V. I. Dvornikov, A.A. Belotserkovsky, V. Barinberg, V. Levin","doi":"10.1109/ISIE.1993.268751","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268751","url":null,"abstract":"This paper includes a basic study of the operating performance of a load commutated power converter drive with AC excitation. Such a drive scheme is well-suited for mine winder modernisation, because to apply this system to an existing winder, a new motor is not required. Electromagnetic phenomena in the stator and rotor circuits of the drive is described by a set of nonlinear differential equations. Using simplified analytical solutions of the motor equations under steady-state conditions, calculation formulae are obtained that give a complete set of steady state performance characteristics of the drive.<<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":"131038580","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.1993.268759
W. Koczara, P. Bialoskorski
Single and three phase boost rectifiers operate with unity power factor and low switching frequency when a multilevel controller is used. A novel structure for multilevel control is proposed. Single phase systems operate mainly as a force commutated rectifier however line commutation is very useful especially for zero crossing supply voltage because, during overlapping, current rate is high and harmonics are reduced. In a three phase system the multilevel control is achieved by using 9 active switches. A method based on a comparison reference and available current rates or comparison voltage drops on supply side inductances is proposed to evaluate the rectifier controllability. Results of simulation and laboratory tests confirm a unity power factor.<>
{"title":"Multilevel boost rectifiers as a unity power factor supply for power electronics drive and for battery charger","authors":"W. Koczara, P. Bialoskorski","doi":"10.1109/ISIE.1993.268759","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268759","url":null,"abstract":"Single and three phase boost rectifiers operate with unity power factor and low switching frequency when a multilevel controller is used. A novel structure for multilevel control is proposed. Single phase systems operate mainly as a force commutated rectifier however line commutation is very useful especially for zero crossing supply voltage because, during overlapping, current rate is high and harmonics are reduced. In a three phase system the multilevel control is achieved by using 9 active switches. A method based on a comparison reference and available current rates or comparison voltage drops on supply side inductances is proposed to evaluate the rectifier controllability. Results of simulation and laboratory tests confirm a unity power factor.<<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":"132875460","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.1993.268775
S. gaber, H. Yousef
This paper presents a self tuning regulator (STR) based on an indirect adaptive pole placement technique in order to improve the efficiency of an adjustable speed DC motor drive system under a wide range of operating conditions. Digital simulation of a separately excited DC motor furnished with an STR and subjected to a step change in the desired signal is performed to demonstrate the effectiveness of the proposed controller. Simulation results reveal that the self tuning regulator can enhance both the efficiency and the dynamic performance of the motor.<>
{"title":"Efficiency optimized speed control of DC motors based on self tuning regulator","authors":"S. gaber, H. Yousef","doi":"10.1109/ISIE.1993.268775","DOIUrl":"https://doi.org/10.1109/ISIE.1993.268775","url":null,"abstract":"This paper presents a self tuning regulator (STR) based on an indirect adaptive pole placement technique in order to improve the efficiency of an adjustable speed DC motor drive system under a wide range of operating conditions. Digital simulation of a separately excited DC motor furnished with an STR and subjected to a step change in the desired signal is performed to demonstrate the effectiveness of the proposed controller. Simulation results reveal that the self tuning regulator can enhance both the efficiency and the dynamic performance of the motor.<<ETX>>","PeriodicalId":267349,"journal":{"name":"ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings","volume":"219 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120930576","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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