Pub Date : 1998-08-31DOI: 10.1109/IECON.1998.724289
Yongge Gan, Wen Wang, Fahai Li, Chongjian Li
From the point of view of influence on supply net, the field-oriented control of cycloconverter-fed synchronous motor system is one of the severest applications in industry, especially in mine plant and steel plant which have very large load variations. A new method of dynamic reactive power compensation based on the drive system itself is illustrated in this paper. Compared with conventional reactive power compensation methods, this method of compensation performs better and costs less. The philosophy of compensation has been described in detail. Moreover, a specific control scheme of dynamic reactive power compensation is given to one of the mine hoist drive systems. The simulation results verify the validity of this new method.
{"title":"New method of reactive power compensation of field-oriented control of cycloconverter-fed synchronous motor driving mine moist","authors":"Yongge Gan, Wen Wang, Fahai Li, Chongjian Li","doi":"10.1109/IECON.1998.724289","DOIUrl":"https://doi.org/10.1109/IECON.1998.724289","url":null,"abstract":"From the point of view of influence on supply net, the field-oriented control of cycloconverter-fed synchronous motor system is one of the severest applications in industry, especially in mine plant and steel plant which have very large load variations. A new method of dynamic reactive power compensation based on the drive system itself is illustrated in this paper. Compared with conventional reactive power compensation methods, this method of compensation performs better and costs less. The philosophy of compensation has been described in detail. Moreover, a specific control scheme of dynamic reactive power compensation is given to one of the mine hoist drive systems. The simulation results verify the validity of this new method.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127967737","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 : 1998-08-31DOI: 10.1109/IECON.1998.724106
I. Henze, G. Stanke
Methods of how to introduce into a scene a priori known grid like structures in order to improve the conditions for image analysis are described. This is important for such cases when objects have to be detected and measured but due to the object characteristics, there is now a markable signal difference between the object and the given background. Translucent liquids or glass like objects represent such classes. Different types of structure detecting algorithms are proposed and discussed. Results are shown for industrial glass pearl measurement as well as for liquid (micro drops) detection in medical and pharmaceutical industries. The structuring approach follows the simple engineering idea to influence the scene conditions in order to improve the possibilities for scene analysis.
{"title":"Precise optical measurement of the shape of a class of opaque and transparent objects using special scene structuring","authors":"I. Henze, G. Stanke","doi":"10.1109/IECON.1998.724106","DOIUrl":"https://doi.org/10.1109/IECON.1998.724106","url":null,"abstract":"Methods of how to introduce into a scene a priori known grid like structures in order to improve the conditions for image analysis are described. This is important for such cases when objects have to be detected and measured but due to the object characteristics, there is now a markable signal difference between the object and the given background. Translucent liquids or glass like objects represent such classes. Different types of structure detecting algorithms are proposed and discussed. Results are shown for industrial glass pearl measurement as well as for liquid (micro drops) detection in medical and pharmaceutical industries. The structuring approach follows the simple engineering idea to influence the scene conditions in order to improve the possibilities for scene analysis.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129034212","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 : 1998-08-31DOI: 10.1109/IECON.1998.724022
D. Izosimov, S. Ryvkin, S. Belkin, V.F. Kazachenko
The use of discrete time models permits a decrease in the microprocessor calculation speed needed without drive precision or response speed performance degradation. Autonomous observers, parameters identification and filters are considered. Optimal pulsewidth modulation algorithms both for open (feedforward) or closed (feedback) loop realisation are considered, with vector sliding mode control utilisation.
{"title":"New approaches to solve digital control synthesis problems and advanced pulsewidth modulation algorithms for AC drives applications","authors":"D. Izosimov, S. Ryvkin, S. Belkin, V.F. Kazachenko","doi":"10.1109/IECON.1998.724022","DOIUrl":"https://doi.org/10.1109/IECON.1998.724022","url":null,"abstract":"The use of discrete time models permits a decrease in the microprocessor calculation speed needed without drive precision or response speed performance degradation. Autonomous observers, parameters identification and filters are considered. Optimal pulsewidth modulation algorithms both for open (feedforward) or closed (feedback) loop realisation are considered, with vector sliding mode control utilisation.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125323726","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 : 1998-08-31DOI: 10.1109/IECON.1998.724168
D. Śaez, A. Cipriano
A simulator of combined cycle power plants based on phenomenological equations, developed in Matlab-SIMULINK, is presented. Then, a new nonlinear control strategy based on minimising the operational costs with environmental and operational constraints of the thermal power plant is designed. The optimisation problem with constraints is solved using a nonlinear dynamic model and the predictive control theory. The solution is given by the optimal set points of the regulation level, i.e., the set points of the PI controllers.
{"title":"Economic optimal control with environmental constraints for combined cycle power plants","authors":"D. Śaez, A. Cipriano","doi":"10.1109/IECON.1998.724168","DOIUrl":"https://doi.org/10.1109/IECON.1998.724168","url":null,"abstract":"A simulator of combined cycle power plants based on phenomenological equations, developed in Matlab-SIMULINK, is presented. Then, a new nonlinear control strategy based on minimising the operational costs with environmental and operational constraints of the thermal power plant is designed. The optimisation problem with constraints is solved using a nonlinear dynamic model and the predictive control theory. The solution is given by the optimal set points of the regulation level, i.e., the set points of the PI controllers.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126757016","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 : 1998-08-31DOI: 10.1109/IECON.1998.723008
E. Hurtig, S. Grosswig
An optimized facility management and the risk assessment of buildings need a permanent up-dating of relevant data. Temperature is a key parameter to design and control air-conditioning installations; time and space variations of the temperature indicate damage situations in an early stage so that measures can be taken for damage prevention, for warning and for controlling escape routes in buildings. The fiber optic temperature sensing technique opens new possibilities and chances for permanent surveying of buildings, power supply installations, communication and data transmission systems.
{"title":"Distributed fiber optics for temperature sensing in buildings and other structures","authors":"E. Hurtig, S. Grosswig","doi":"10.1109/IECON.1998.723008","DOIUrl":"https://doi.org/10.1109/IECON.1998.723008","url":null,"abstract":"An optimized facility management and the risk assessment of buildings need a permanent up-dating of relevant data. Temperature is a key parameter to design and control air-conditioning installations; time and space variations of the temperature indicate damage situations in an early stage so that measures can be taken for damage prevention, for warning and for controlling escape routes in buildings. The fiber optic temperature sensing technique opens new possibilities and chances for permanent surveying of buildings, power supply installations, communication and data transmission systems.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"282 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122953831","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 : 1998-08-31DOI: 10.1109/IECON.1998.723980
Christian Zirkelbach, K. Verbarg
This report describes practical experiences in building systems for manufacturing and robotics. Transporting plants are a typical example for the integration of database systems and real-time systems. This is due to the fact that general administration, workflow control as well as physical movements of conveyor systems have to be coordinated. In practice, plant engineers were forced to develop pragmatic but working concepts to bring real-time issues and database principles under a single roof. The most common approach is based on a hierarchical network of two different types of computers-administration computers and control computers-to handle database services or real-time services, respectively. In such a setting, recovery for real-time computers can be achieved by means of downloading the relevant data from a database-supported administration computer. Overall integrity requires communication supported by database services. Here, we treat the necessary transaction processing framework.
{"title":"Databases in automated process control","authors":"Christian Zirkelbach, K. Verbarg","doi":"10.1109/IECON.1998.723980","DOIUrl":"https://doi.org/10.1109/IECON.1998.723980","url":null,"abstract":"This report describes practical experiences in building systems for manufacturing and robotics. Transporting plants are a typical example for the integration of database systems and real-time systems. This is due to the fact that general administration, workflow control as well as physical movements of conveyor systems have to be coordinated. In practice, plant engineers were forced to develop pragmatic but working concepts to bring real-time issues and database principles under a single roof. The most common approach is based on a hierarchical network of two different types of computers-administration computers and control computers-to handle database services or real-time services, respectively. In such a setting, recovery for real-time computers can be achieved by means of downloading the relevant data from a database-supported administration computer. Overall integrity requires communication supported by database services. Here, we treat the necessary transaction processing framework.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126319579","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 : 1998-08-31DOI: 10.1109/IECON.1998.724283
R.C. de Araujo, C.M. Nunes, A. Campos
This paper is concerned with the dynamic simulation of electronic circuits, and especially of static power converters. The simulation of power converters, which are intrinsically nonlinear systems due to the inner physical nature of the semiconductor switches, does require the numerical solution of their mathematical model with a reasonably high degree of difficulty. This paper presents an alternate method of simulation, with a simple and exact analytic closed-form solution, presenting a high precision, with intrinsical numerical stability, and high speed, principally in the cases of long simulations. It is based on the separation of the system in a set of linear state-space subsystems. These sub-systems are then diagonalized by means of a similarity transformation and solved by direct integration. This technique simplifies the system analytical solution and implies great velocity to the simulation. This paper includes a detailed mathematical analysis with a complete description of the proposed method. Experimental results on a set of test circuits, with a comparative analysis with PSPICE simulator are included, thus allowing the verification of the proposed algorithm.
{"title":"Simulation of electronic circuits by state variables decoupling","authors":"R.C. de Araujo, C.M. Nunes, A. Campos","doi":"10.1109/IECON.1998.724283","DOIUrl":"https://doi.org/10.1109/IECON.1998.724283","url":null,"abstract":"This paper is concerned with the dynamic simulation of electronic circuits, and especially of static power converters. The simulation of power converters, which are intrinsically nonlinear systems due to the inner physical nature of the semiconductor switches, does require the numerical solution of their mathematical model with a reasonably high degree of difficulty. This paper presents an alternate method of simulation, with a simple and exact analytic closed-form solution, presenting a high precision, with intrinsical numerical stability, and high speed, principally in the cases of long simulations. It is based on the separation of the system in a set of linear state-space subsystems. These sub-systems are then diagonalized by means of a similarity transformation and solved by direct integration. This technique simplifies the system analytical solution and implies great velocity to the simulation. This paper includes a detailed mathematical analysis with a complete description of the proposed method. Experimental results on a set of test circuits, with a comparative analysis with PSPICE simulator are included, thus allowing the verification of the proposed algorithm.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122310223","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 : 1998-08-31DOI: 10.1109/IECON.1998.722862
J. S. Montanaro, G. Beale
Linear quadratic Gaussian (LQG) control is applied to the application of active vibration cancellation. The virtual mass of a vibration motor is controlled based on measurements of acceleration. The final controller is a modified LQG design developed for an augmented model of the vibration motor. This paper describes the modeling and parameter identification of the vibration motor, development of performance specifications for the controller, design of the LQG controller, and experimental testing of the resulting control system. Modeling of the vibration motor was based on both theoretical derivation and experimental data collection. Development of the specifications for the controller was drone primarily in the frequency domain, using the return ratios of two different transfer functions. Controller design was done using the continuous-time LQG algorithm. The controller was implemented as an analog circuit with operational amplifiers. Some closed-loop stability issues were observed during the experimental testing, and an explanation is offered for these problems.
{"title":"Feedback control for canceling mechanical vibrations","authors":"J. S. Montanaro, G. Beale","doi":"10.1109/IECON.1998.722862","DOIUrl":"https://doi.org/10.1109/IECON.1998.722862","url":null,"abstract":"Linear quadratic Gaussian (LQG) control is applied to the application of active vibration cancellation. The virtual mass of a vibration motor is controlled based on measurements of acceleration. The final controller is a modified LQG design developed for an augmented model of the vibration motor. This paper describes the modeling and parameter identification of the vibration motor, development of performance specifications for the controller, design of the LQG controller, and experimental testing of the resulting control system. Modeling of the vibration motor was based on both theoretical derivation and experimental data collection. Development of the specifications for the controller was drone primarily in the frequency domain, using the return ratios of two different transfer functions. Controller design was done using the continuous-time LQG algorithm. The controller was implemented as an analog circuit with operational amplifiers. Some closed-loop stability issues were observed during the experimental testing, and an explanation is offered for these problems.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121075001","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 : 1998-08-31DOI: 10.1109/IECON.1998.724279
P. Camacho, F. Arrebola, F. Sandoval
This paper describes the architecture of adaptive space-variant sensors with Cartesian topologies. Besides their multiresolution output, reconfigurable sensors can be upgraded to generate additional data to be processed at higher level modules of the vision systems, making it possible to unload the processing stages of certain tasks, without penalty in time or significant addition of hardware. A synthesizable implementation of these sensors, based on off-the-shelf FPGAs and CCD cameras is also described.
{"title":"Multiresolution sensors with adaptive structure","authors":"P. Camacho, F. Arrebola, F. Sandoval","doi":"10.1109/IECON.1998.724279","DOIUrl":"https://doi.org/10.1109/IECON.1998.724279","url":null,"abstract":"This paper describes the architecture of adaptive space-variant sensors with Cartesian topologies. Besides their multiresolution output, reconfigurable sensors can be upgraded to generate additional data to be processed at higher level modules of the vision systems, making it possible to unload the processing stages of certain tasks, without penalty in time or significant addition of hardware. A synthesizable implementation of these sensors, based on off-the-shelf FPGAs and CCD cameras is also described.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116219710","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 : 1998-08-31DOI: 10.1109/IECON.1998.723951
J. Alonso, J. Ribas, J. J. del Coz, A. Calleja, E. López, M. Rico-Secades
In this paper a new distributive control system for indoor fluorescent lighting based on LonWorks technology is presented. The system features the following elements: microprocessor-controlled fluorescent lamp electronic ballast, communication system using the power line as communication media and control software for Windows 95 environment. With this structure a low cost distributive control system for lighting applications has been achieved, allowing energy and maintenance saving and reliability increase of the fluorescent lighting systems.
{"title":"Intelligent control system for fluorescent lighting based on LonWorks technology","authors":"J. Alonso, J. Ribas, J. J. del Coz, A. Calleja, E. López, M. Rico-Secades","doi":"10.1109/IECON.1998.723951","DOIUrl":"https://doi.org/10.1109/IECON.1998.723951","url":null,"abstract":"In this paper a new distributive control system for indoor fluorescent lighting based on LonWorks technology is presented. The system features the following elements: microprocessor-controlled fluorescent lamp electronic ballast, communication system using the power line as communication media and control software for Windows 95 environment. With this structure a low cost distributive control system for lighting applications has been achieved, allowing energy and maintenance saving and reliability increase of the fluorescent lighting systems.","PeriodicalId":377136,"journal":{"name":"IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116744031","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：