A nonlinear state feedback law for the Cuk converter is proposed. It is shown that a special type of DC-to-DC switch mode power supplies can be handled by the theory of AI systems. The design of the closed loop is based on the L/sub 2/-gain analysis of nonlinear systems. The successful implementation using a laboratory model proves that the proposed procedure is applicable for practical problems.<>
{"title":"Modern control of a Cuk converter using nonlinear methods","authors":"K. Schlacher, A. Kugi","doi":"10.1109/CCA.1994.381431","DOIUrl":"https://doi.org/10.1109/CCA.1994.381431","url":null,"abstract":"A nonlinear state feedback law for the Cuk converter is proposed. It is shown that a special type of DC-to-DC switch mode power supplies can be handled by the theory of AI systems. The design of the closed loop is based on the L/sub 2/-gain analysis of nonlinear systems. The successful implementation using a laboratory model proves that the proposed procedure is applicable for practical problems.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"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":"124378705","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 incorporation of enhanced biological phosphorus elimination in the single sludge process is a main challenge in the design of modern biological waste water treatment plants. We develop a mathematical model for estimating the influence of technical parameters such as the mean cell residence time, water and sludge recycle rate and possible intermediate feed or the influence of process configuration such as number mode, relation of size and interconnection of reactors. The model is based on the IAWRQ model No.1, and it describes the microkinetics of enhanced biological phosphorus elimination in addition to the degradation kinetics of carbonaceous components and nitrogen. The data from dynamic investigations such as daily patterns in flow and concentration shock loads or faults were compared with the predictions made by the dynamic model. An outline for the application of the developed complex model to waste water treatment plant is discussed.<>
{"title":"Microkinetics and mathematical simulation of enhanced biological phosphorus removal","authors":"A. Ante, H. Voss","doi":"10.1109/CCA.1994.381284","DOIUrl":"https://doi.org/10.1109/CCA.1994.381284","url":null,"abstract":"The incorporation of enhanced biological phosphorus elimination in the single sludge process is a main challenge in the design of modern biological waste water treatment plants. We develop a mathematical model for estimating the influence of technical parameters such as the mean cell residence time, water and sludge recycle rate and possible intermediate feed or the influence of process configuration such as number mode, relation of size and interconnection of reactors. The model is based on the IAWRQ model No.1, and it describes the microkinetics of enhanced biological phosphorus elimination in addition to the degradation kinetics of carbonaceous components and nitrogen. The data from dynamic investigations such as daily patterns in flow and concentration shock loads or faults were compared with the predictions made by the dynamic model. An outline for the application of the developed complex model to waste water treatment plant is discussed.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"29 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":"114447037","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 position-velocity tracking controller for a brushless DC motor-load system without velocity measurement. An observed integrator backstepping procedure and a nonlinear velocity observer are utilized to design a nonlinear tracking controller which guarantees globally exponentially stable position-velocity tracking. The proposed controller is successfully implemented on a brushless DC motor-load system.<>
{"title":"Position-velocity tracking control of a brushless DC motor via an observed integrator backstepping approach","authors":"J. Hu, D. Dawson, K. Anderson","doi":"10.1109/CCA.1994.381384","DOIUrl":"https://doi.org/10.1109/CCA.1994.381384","url":null,"abstract":"This paper presents a position-velocity tracking controller for a brushless DC motor-load system without velocity measurement. An observed integrator backstepping procedure and a nonlinear velocity observer are utilized to design a nonlinear tracking controller which guarantees globally exponentially stable position-velocity tracking. The proposed controller is successfully implemented on a brushless DC motor-load system.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"67 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":"114908519","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 system for implementing advanced motion control using a floating-point digital signal processor (DSP) and a transputer-based parallel processing system. The discussion includes a brief look at the advantages of using DSPs in real-time control applications and the techniques of integrating DSPs with parallel processing transputer networks to enhance computing power. The main focus of this paper is the design of a system that combines the excellent real-time response of the Texas Instruments TMS320C30 DSP with the superior computational power of a parallel processing system based on Intel i860 RISC processors and Inmos transputers. The software of the system is hosted in the popular MATLAB environment to provide a simple user interface as well as many powerful mathematical tools. The system also includes a simulation package to allow rapid verification of the user's program and control algorithm. The system is ideal for implementing advanced motion control experiments requiring high speed floating point computations and fast sampling rates. A complex adaptive motor control experiment is presented in this paper to illustrate the use of the system.<>
{"title":"Advanced motion control of mechatronic systems via a high-speed DSP and a parallel processing transputer network","authors":"S. Lim, D. Dawson, P. Vedagarbha","doi":"10.1109/CCA.1994.381403","DOIUrl":"https://doi.org/10.1109/CCA.1994.381403","url":null,"abstract":"This paper presents a system for implementing advanced motion control using a floating-point digital signal processor (DSP) and a transputer-based parallel processing system. The discussion includes a brief look at the advantages of using DSPs in real-time control applications and the techniques of integrating DSPs with parallel processing transputer networks to enhance computing power. The main focus of this paper is the design of a system that combines the excellent real-time response of the Texas Instruments TMS320C30 DSP with the superior computational power of a parallel processing system based on Intel i860 RISC processors and Inmos transputers. The software of the system is hosted in the popular MATLAB environment to provide a simple user interface as well as many powerful mathematical tools. The system also includes a simulation package to allow rapid verification of the user's program and control algorithm. The system is ideal for implementing advanced motion control experiments requiring high speed floating point computations and fast sampling rates. A complex adaptive motor control experiment is presented in this paper to illustrate the use of the system.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"203 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":"115026483","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}
Multivariable temperature and alkali control in the washing zone of a continuous digester is considered. A linear model is identified from a nonlinear digester model, which is obtained by applying the method of orthogonal collocation to a model in terms of partial differential equations. The linear model is used for control design employing the Smith predictor in combination with an H/sub /spl infin// robust stabilization procedure. Simulations using both the nominal and perturbed nonlinear models in combination with both a full and a reduced order controller are performed. Simulation studies show that the proposed control design approach is useful and may prove effective in digester control.<>
{"title":"Control of the washing zone in a continuous digester","authors":"J. Funkquist","doi":"10.1109/CCA.1994.381429","DOIUrl":"https://doi.org/10.1109/CCA.1994.381429","url":null,"abstract":"Multivariable temperature and alkali control in the washing zone of a continuous digester is considered. A linear model is identified from a nonlinear digester model, which is obtained by applying the method of orthogonal collocation to a model in terms of partial differential equations. The linear model is used for control design employing the Smith predictor in combination with an H/sub /spl infin// robust stabilization procedure. Simulations using both the nominal and perturbed nonlinear models in combination with both a full and a reduced order controller are performed. Simulation studies show that the proposed control design approach is useful and may prove effective in digester control.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"102 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":"117300505","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 knowledge of the friction coefficient between tyre and road surface is the central part of vehicle longitudinal and lateral control. For this purpose a friction monitoring system is developed using nonlinear and linear mathematical models to describe the /spl mu/-slip characteristics and to compute the dynamic wheel loads and longitudinal tyre forces. A recursive least squares estimator calculates the parameters of the /spl mu/-slip characteristics online and on-board for use in control systems.<>
{"title":"Monitoring of the friction coefficient between tyre and road surface","authors":"S. Germann, M. Wurtenberger, A. Daiss","doi":"10.1109/CCA.1994.381397","DOIUrl":"https://doi.org/10.1109/CCA.1994.381397","url":null,"abstract":"The knowledge of the friction coefficient between tyre and road surface is the central part of vehicle longitudinal and lateral control. For this purpose a friction monitoring system is developed using nonlinear and linear mathematical models to describe the /spl mu/-slip characteristics and to compute the dynamic wheel loads and longitudinal tyre forces. A recursive least squares estimator calculates the parameters of the /spl mu/-slip characteristics online and on-board for use in control systems.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"115 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":"124680855","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 industries where there are a great number of control loops, it would be convenient to have some tool for monitoring the performance of individual loops. This paper starts from one available approach that evaluates the control performance compared to minimum variance control. The authors show, using an example and also from industrial data, that this technique gives an inadequate measure of the performance if the aim is not stochastic control, but step disturbance rejection. Therefore, some modified criteria are proposed and a monitoring tool utilising all available techniques outlined.<>
{"title":"Some aspects of control loop performance monitoring","authors":"P.-G. Eriksson, A. Isaksson","doi":"10.1109/CCA.1994.381372","DOIUrl":"https://doi.org/10.1109/CCA.1994.381372","url":null,"abstract":"In industries where there are a great number of control loops, it would be convenient to have some tool for monitoring the performance of individual loops. This paper starts from one available approach that evaluates the control performance compared to minimum variance control. The authors show, using an example and also from industrial data, that this technique gives an inadequate measure of the performance if the aim is not stochastic control, but step disturbance rejection. Therefore, some modified criteria are proposed and a monitoring tool utilising all available techniques outlined.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"37 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":"124721598","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, improved control strategies for refrigeration systems based on fuzzy logic are discussed. For the development of these control concepts physical understanding of the process dynamics is needed. Therefore, a thermodynamic model is used to study the dynamic properties of the cold store, with emphasis on the coupling of temperature and relative humidity. With this knowledge, together with the heuristic knowledge of refrigeration engineers, rule-based control strategies for refrigeration systems are proposed. For the implementation the fuzzy logic method is used. The design with fuzzy logic allows one to take into account the complex coupling of the dynamic variables temperature and humidity in a straightforward manner. A survey of the control structure and simulation results are presented. It is shown that the fuzzy controller gives favourable process behaviour, e.g. under the influence of disturbances or after changes of set points.<>
{"title":"Fuzzy control for temperature and humidity in refrigeration systems","authors":"M. Becker, D. Oestreich, H. Hasse, L. Litz","doi":"10.1109/CCA.1994.381476","DOIUrl":"https://doi.org/10.1109/CCA.1994.381476","url":null,"abstract":"In this paper, improved control strategies for refrigeration systems based on fuzzy logic are discussed. For the development of these control concepts physical understanding of the process dynamics is needed. Therefore, a thermodynamic model is used to study the dynamic properties of the cold store, with emphasis on the coupling of temperature and relative humidity. With this knowledge, together with the heuristic knowledge of refrigeration engineers, rule-based control strategies for refrigeration systems are proposed. For the implementation the fuzzy logic method is used. The design with fuzzy logic allows one to take into account the complex coupling of the dynamic variables temperature and humidity in a straightforward manner. A survey of the control structure and simulation results are presented. It is shown that the fuzzy controller gives favourable process behaviour, e.g. under the influence of disturbances or after changes of set points.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"27 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":"128381729","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 communication deals with the problem of designing a nonlinear observer in order to achieve fault detection and localization for a wide class of nonlinear systems subjected to bounded nonlinearities. A dedicated nonlinear observer scheme (DNOS) for fault detection and identification in reconstructible systems is proposed.<>
{"title":"Non-linear observer-based fault detection","authors":"Kondo H. Adjallah, D. Maquin, J. Ragot","doi":"10.1109/CCA.1994.381359","DOIUrl":"https://doi.org/10.1109/CCA.1994.381359","url":null,"abstract":"This communication deals with the problem of designing a nonlinear observer in order to achieve fault detection and localization for a wide class of nonlinear systems subjected to bounded nonlinearities. A dedicated nonlinear observer scheme (DNOS) for fault detection and identification in reconstructible systems is proposed.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"12 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":"129538240","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}
An approach to the solution of the mapping problem for time-critical Occam2 programs for transputer networks is described. It is based on the idea of running the algorithm on the real transputer to obtain its temporal diagram and then deducing the near-optimal load distribution and/or network architecture. The method uses the genetic algorithm when looking for a mapping and demonstrates good agreement with experiments.<>
{"title":"Simulation of parallel time-critical programs with the DYNAMO system","authors":"A. Biriukov, D. Ulyanov","doi":"10.1109/CCA.1994.381214","DOIUrl":"https://doi.org/10.1109/CCA.1994.381214","url":null,"abstract":"An approach to the solution of the mapping problem for time-critical Occam2 programs for transputer networks is described. It is based on the idea of running the algorithm on the real transputer to obtain its temporal diagram and then deducing the near-optimal load distribution and/or network architecture. The method uses the genetic algorithm when looking for a mapping and demonstrates good agreement with experiments.<<ETX>>","PeriodicalId":173370,"journal":{"name":"1994 Proceedings of IEEE International Conference on Control and Applications","volume":"13 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":"127282336","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：