L. Perez, F. J. Pérez, J. Cerezo, J. Catediano, J. Martín-Sánchez
This article presents the application of the predictive adaptive control system (SCAP) to the control and optimization of the processes in a coal power station. The results obtained, corresponding to a research and development project at the Pasajes de San Juan Power Station, which belongs to the company Iberdrola, demonstrate the suitability of the SCAP application in this field as well as the important benefits that may be derived from its application.<>
本文介绍了预测自适应控制系统(SCAP)在某燃煤电厂过程控制与优化中的应用。根据Iberdrola公司所属的Pasajes de San Juan电站的一个研究和开发项目所获得的结果，证明了SCAP在该领域应用的适用性以及其应用可能带来的重要效益
{"title":"Adaptive predictive control in a thermal power station","authors":"L. Perez, F. J. Pérez, J. Cerezo, J. Catediano, J. Martín-Sánchez","doi":"10.1109/CCA.1994.381377","DOIUrl":"https://doi.org/10.1109/CCA.1994.381377","url":null,"abstract":"This article presents the application of the predictive adaptive control system (SCAP) to the control and optimization of the processes in a coal power station. The results obtained, corresponding to a research and development project at the Pasajes de San Juan Power Station, which belongs to the company Iberdrola, demonstrate the suitability of the SCAP application in this field as well as the important benefits that may be derived from its application.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116013034","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}
Nonlinear systems are becoming an area of great interest in the control engineering community. Many interesting problems such as controllability, input-output decoupling, feedback linearization, have been approached with success. On the other hand, not so many results have been achieved in the solution of the problem of identification and control of unknown nonlinear systems. The application of linear methods to nonlinear systems is not very successful when wide control ranges are necessary. For those cases non-conventional methods, such as the use of neural networks, have been investigated. Another promising approach is the application of fuzzy logic to the control of some classes of nonlinear systems. The method is simple, not time consuming, and requires little knowledge of the system equations. The combination of these two methods have been tried with success and is known as a neuro-fuzzy system. This paper presents an overview of the various neuro-fuzzy approaches, and their application to the control of nonlinear systems.<>
{"title":"A performance analysis of various neuro-fuzzy approaches for controlling nonlinear systems","authors":"E. Teixeira, G. Laforga, H. Azevedo","doi":"10.1109/CCA.1994.381230","DOIUrl":"https://doi.org/10.1109/CCA.1994.381230","url":null,"abstract":"Nonlinear systems are becoming an area of great interest in the control engineering community. Many interesting problems such as controllability, input-output decoupling, feedback linearization, have been approached with success. On the other hand, not so many results have been achieved in the solution of the problem of identification and control of unknown nonlinear systems. The application of linear methods to nonlinear systems is not very successful when wide control ranges are necessary. For those cases non-conventional methods, such as the use of neural networks, have been investigated. Another promising approach is the application of fuzzy logic to the control of some classes of nonlinear systems. The method is simple, not time consuming, and requires little knowledge of the system equations. The combination of these two methods have been tried with success and is known as a neuro-fuzzy system. This paper presents an overview of the various neuro-fuzzy approaches, and their application to the control of nonlinear systems.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121943339","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}
This paper presents a simple online approach for motion control of rover-mounted manipulators. An integrated kinematic model of the rover-plus-manipulator system is derived which incorporates the nonholonomic rover constraint with the holonomic end-effector constraint. The redundancy introduced by the rover mobility is exploited to perform a set of user-specified additional tasks during the end-effector motion. The configuration control approach is utilized to satisfy the nonholonomic rover constraint, while accomplishing the end-effector motion and the redundancy resolution goal simultaneously. This framework allows the user to assign weighting factors to the rover movement and manipulator motion, as well as to each task specification. The computational efficiency of the control scheme makes it particularly suitable for real-time implementation. The proposed method is applied to a planar two-jointed arm mounted on a rover, and computer simulation results are presented for illustration.<>
{"title":"Configuration control of rover-mounted manipulators","authors":"H. Seraji","doi":"10.1109/CCA.1994.381271","DOIUrl":"https://doi.org/10.1109/CCA.1994.381271","url":null,"abstract":"This paper presents a simple online approach for motion control of rover-mounted manipulators. An integrated kinematic model of the rover-plus-manipulator system is derived which incorporates the nonholonomic rover constraint with the holonomic end-effector constraint. The redundancy introduced by the rover mobility is exploited to perform a set of user-specified additional tasks during the end-effector motion. The configuration control approach is utilized to satisfy the nonholonomic rover constraint, while accomplishing the end-effector motion and the redundancy resolution goal simultaneously. This framework allows the user to assign weighting factors to the rover movement and manipulator motion, as well as to each task specification. The computational efficiency of the control scheme makes it particularly suitable for real-time implementation. The proposed method is applied to a planar two-jointed arm mounted on a rover, and computer simulation results are presented for illustration.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"358 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115877377","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}
The analysis and the implementation of nonlinear feedback linearization control of electro-magnetic suspension (EMS) system using DSP are presented. We show that an EMS system is nonlinear feedback linearizable and that the proposed nonlinear feedback controller for an EMS system is robust against mass parameter perturbation and constant force disturbance. Some tests were conducted for experimental comparison of the feedback linearization control with the classical control approach. The experiments were performed using a TMS320C31 DSP. The experimental results demonstrate that the feedback linearization controller shows better performance than that of the classical state feedback controller using the linearization of small perturbation analysis method and it is robust with respect to parameter variations and constant load disturbance.<>
{"title":"Design and analysis of the nonlinear feedback linearizing controller for an EMS system","authors":"Sungjun Joo, J. Byun, H. Shim, J. Seo","doi":"10.1109/CCA.1994.381400","DOIUrl":"https://doi.org/10.1109/CCA.1994.381400","url":null,"abstract":"The analysis and the implementation of nonlinear feedback linearization control of electro-magnetic suspension (EMS) system using DSP are presented. We show that an EMS system is nonlinear feedback linearizable and that the proposed nonlinear feedback controller for an EMS system is robust against mass parameter perturbation and constant force disturbance. Some tests were conducted for experimental comparison of the feedback linearization control with the classical control approach. The experiments were performed using a TMS320C31 DSP. The experimental results demonstrate that the feedback linearization controller shows better performance than that of the classical state feedback controller using the linearization of small perturbation analysis method and it is robust with respect to parameter variations and constant load disturbance.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123430767","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}
In this paper, an identification of asynchronous machine parameters by a recursive least-squares method with forgetting factor is presented. The authors perform an identification procedure based on stator voltage and current measurements. The authors use band-pass filters to stabilize the identification algorithm. For different time sampling, they have obtained the parameters of a 1.5 kW/4.4 A/380 V asynchronous machine. The obtained performances show that this procedure can be used for an on-line identification in the indirect vector control of the asynchronous machine.<>
提出了一种带遗忘因子的递推最小二乘法辨识异步电机参数的方法。作者执行了一个基于定子电压和电流测量的识别程序。作者使用带通滤波器来稳定识别算法。通过不同时间的采样，得到了一台1.5 kW/4.4 a / 380v异步电机的参数。实验结果表明，该方法可用于异步电机间接矢量控制的在线辨识。
{"title":"Identification of asynchronous machine parameters by a recursive least-squares method","authors":"H. Guesbaoui, O. Touhami, C. Iung","doi":"10.1109/CCA.1994.381382","DOIUrl":"https://doi.org/10.1109/CCA.1994.381382","url":null,"abstract":"In this paper, an identification of asynchronous machine parameters by a recursive least-squares method with forgetting factor is presented. The authors perform an identification procedure based on stator voltage and current measurements. The authors use band-pass filters to stabilize the identification algorithm. For different time sampling, they have obtained the parameters of a 1.5 kW/4.4 A/380 V asynchronous machine. The obtained performances show that this procedure can be used for an on-line identification in the indirect vector control of the asynchronous machine.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122384909","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}
Dynamic optimal control strategies for HVAC equipment can be derived to minimize electrical power usage or cost of operation. By accounting for the thermal dynamics of the building structure and furnishings and any dedicated thermal storage systems, dynamic approaches permit equipment use to be rescheduled, within constraints of equipment size and permissible indoor temperature variations, in order to improve part-load performance or to operate equipment when the price of electricity is lower. This paper focuses on the rescheduling problem under a very general rate structure known as real-time pricing, designed to accurately express short-term variations in the cost to the utility for producing and transmitting electricity. It examines the mathematical properties of the set of linear difference equations used to model thermal dynamics which are to be asymptotically stable, positive dynamic systems. This permits a much more rapid and elegant series of calculations to establish the optimal schedule than is possible with conventional linear programming techniques. Also presented are results from a hypothetical case study and from actual performance of an HVAC control system with storage.<>
{"title":"Minimum-cost control of HVAC systems under real time prices","authors":"B. Daryanian, L. Norford","doi":"10.1109/CCA.1994.381252","DOIUrl":"https://doi.org/10.1109/CCA.1994.381252","url":null,"abstract":"Dynamic optimal control strategies for HVAC equipment can be derived to minimize electrical power usage or cost of operation. By accounting for the thermal dynamics of the building structure and furnishings and any dedicated thermal storage systems, dynamic approaches permit equipment use to be rescheduled, within constraints of equipment size and permissible indoor temperature variations, in order to improve part-load performance or to operate equipment when the price of electricity is lower. This paper focuses on the rescheduling problem under a very general rate structure known as real-time pricing, designed to accurately express short-term variations in the cost to the utility for producing and transmitting electricity. It examines the mathematical properties of the set of linear difference equations used to model thermal dynamics which are to be asymptotically stable, positive dynamic systems. This permits a much more rapid and elegant series of calculations to establish the optimal schedule than is possible with conventional linear programming techniques. Also presented are results from a hypothetical case study and from actual performance of an HVAC control system with storage.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130557987","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}
The scanning tunnelling microscope (STM) can be used either for qualitative microscopy or for lithography. Furthermore, this microscope is a high precision instrument sensitive to disturbances originating from sound waves, vibrations and temperature variations. The quality of mechanical design is paramount for the scanning tunnelling microscopy technology. It is however not only the quality of mechanical design which defines the STM's operational reliability, it is also the quality of the STM's control system, as practical experience indicates. In this paper, attention is focused on improving the STM's control system.<>
{"title":"On the control of scanning tunnelling microscopes","authors":"R. Banning, P.M.L.O. Sholte, A. E. Holman","doi":"10.1109/CCA.1994.381298","DOIUrl":"https://doi.org/10.1109/CCA.1994.381298","url":null,"abstract":"The scanning tunnelling microscope (STM) can be used either for qualitative microscopy or for lithography. Furthermore, this microscope is a high precision instrument sensitive to disturbances originating from sound waves, vibrations and temperature variations. The quality of mechanical design is paramount for the scanning tunnelling microscopy technology. It is however not only the quality of mechanical design which defines the STM's operational reliability, it is also the quality of the STM's control system, as practical experience indicates. In this paper, attention is focused on improving the STM's control system.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"18 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131091305","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}
In this paper, a nonlinear lumped approximation model of a heat exchanger is derived from first principles. The use of dynamic state feedback to achieve feedback linearisation of the nonlinear heat exchanger model is investigated. Necessary and sufficient conditions for feedback linearisability are derived. A simple example is presented to complement the theory.<>
{"title":"Modelling and dynamic feedback linearisation of a heat exchanger model","authors":"M.H.R. Fazlur Rahman, R. Devanathan","doi":"10.1109/CCA.1994.381261","DOIUrl":"https://doi.org/10.1109/CCA.1994.381261","url":null,"abstract":"In this paper, a nonlinear lumped approximation model of a heat exchanger is derived from first principles. The use of dynamic state feedback to achieve feedback linearisation of the nonlinear heat exchanger model is investigated. Necessary and sufficient conditions for feedback linearisability are derived. A simple example is presented to complement the theory.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129802581","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}
The row-wise and/or the column-wise multiple comparison procedure is introduced for analysing two-way tables. It leads to a block interaction model and is particularly useful when one factor is indicative or variational in the usual analysis of variance model. The procedure is also useful for comparing multinomials or detecting a change point in the sequence of multinomials, where the row-wise and/or the column-wise comparisons are essential. A two-way change point model is newly introduced when there are natural orderings in both of rows and columns.<>
{"title":"Modelling and analysing the generalized interaction","authors":"C. Hirotsu","doi":"10.1109/CCA.1994.381332","DOIUrl":"https://doi.org/10.1109/CCA.1994.381332","url":null,"abstract":"The row-wise and/or the column-wise multiple comparison procedure is introduced for analysing two-way tables. It leads to a block interaction model and is particularly useful when one factor is indicative or variational in the usual analysis of variance model. The procedure is also useful for comparing multinomials or detecting a change point in the sequence of multinomials, where the row-wise and/or the column-wise comparisons are essential. A two-way change point model is newly introduced when there are natural orderings in both of rows and columns.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128723963","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}
In this paper we address two problems which are important for dual-arm and multi-arm manipulators: first, the optimal hold force/torque which can hold the common object without slipping and second the optimal moving force/torque distribution supplied by each arm. We assume that we know the resultant force/torque exerted on the common object by the manipulators, then we develop new algorithms which can determine the optimal hold force/torque mainly based on the static frictional constraints and optimal moving force/torque distribution by minimizing the cost function which is the weighted magnitude of force/torque exerted on the rigid object by the manipulators.<>
{"title":"Optimal hold and moving force/torque for dual-arm and multi-arm manipulators holding rigid object","authors":"Li-Wen Chen, G. Papavassilopoulos","doi":"10.1109/CCA.1994.381447","DOIUrl":"https://doi.org/10.1109/CCA.1994.381447","url":null,"abstract":"In this paper we address two problems which are important for dual-arm and multi-arm manipulators: first, the optimal hold force/torque which can hold the common object without slipping and second the optimal moving force/torque distribution supplied by each arm. We assume that we know the resultant force/torque exerted on the common object by the manipulators, then we develop new algorithms which can determine the optimal hold force/torque mainly based on the static frictional constraints and optimal moving force/torque distribution by minimizing the cost function which is the weighted magnitude of force/torque exerted on the rigid object by the manipulators.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128821220","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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