Pub Date : 1994-03-07DOI: 10.1109/CACSD.1994.288929
T. Ohtani, M. Fukuzawa, M. Masubuchi
Recently, nonlinear control theory based upon the differential geometric approach has proved their availability through the theoretical study and practical system applications. We propose a computer aided design system for nonlinear control systems by using mathematical software system "Mathematica". The functions of this CAD system includes the feedback linearization techniques, nonlinear observers and robust analyses. The availability of this CAD system is confirmed by several examples.<>
{"title":"A CAD system for nonlinear control system design using \"Mathematica\"","authors":"T. Ohtani, M. Fukuzawa, M. Masubuchi","doi":"10.1109/CACSD.1994.288929","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288929","url":null,"abstract":"Recently, nonlinear control theory based upon the differential geometric approach has proved their availability through the theoretical study and practical system applications. We propose a computer aided design system for nonlinear control systems by using mathematical software system \"Mathematica\". The functions of this CAD system includes the feedback linearization techniques, nonlinear observers and robust analyses. The availability of this CAD system is confirmed by several examples.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129690806","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288945
Jinwoo Kim, Yoonkeon Moon, B. Zeigler
As plant specifications become complicated, more robust controller design methodologies are needed. A genetic algorithm optimizer, which utilizes natural evolution strategies, offers a promising technology that supports optimization of the parameters of fuzzy logic and other parameterized non-linear controllers. This paper shows how GAs can effectively and efficiently optimize the performance of parameterized non-linear controllers, such as fuzzy net controllers in a multiprocessor simulation environment. Our results demonstrate the advantage of a Computer-Aided System Design technique for rapid prototyping of control systems.<>
{"title":"Designing fuzzy net controllers using GA optimization","authors":"Jinwoo Kim, Yoonkeon Moon, B. Zeigler","doi":"10.1109/CACSD.1994.288945","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288945","url":null,"abstract":"As plant specifications become complicated, more robust controller design methodologies are needed. A genetic algorithm optimizer, which utilizes natural evolution strategies, offers a promising technology that supports optimization of the parameters of fuzzy logic and other parameterized non-linear controllers. This paper shows how GAs can effectively and efficiently optimize the performance of parameterized non-linear controllers, such as fuzzy net controllers in a multiprocessor simulation environment. Our results demonstrate the advantage of a Computer-Aided System Design technique for rapid prototyping of control systems.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130701245","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288936
G. Grubel, M. Otter, F. Breitenecker, A. Prinz, G. Schuster, I. Bausch-Gall, H. Fischer
One problem in multidisciplinary simulation is to merge models which originate in different disciplinary environments into a common computer-executable model for computational experimenting. The paper reports on a possible solution thereof. This is based on a public-domain, application-neutral, formally defined Fortran or C format for dynamic input/output systems, called DSblock, to which "higher level" models can be translated. In particular, it is reported on A-CoSiLa, an ACSL model translator to the neutral DSblock format.<>
{"title":"An ACSL-model translator to the neutral Fortran DSblock-model format","authors":"G. Grubel, M. Otter, F. Breitenecker, A. Prinz, G. Schuster, I. Bausch-Gall, H. Fischer","doi":"10.1109/CACSD.1994.288936","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288936","url":null,"abstract":"One problem in multidisciplinary simulation is to merge models which originate in different disciplinary environments into a common computer-executable model for computational experimenting. The paper reports on a possible solution thereof. This is based on a public-domain, application-neutral, formally defined Fortran or C format for dynamic input/output systems, called DSblock, to which \"higher level\" models can be translated. In particular, it is reported on A-CoSiLa, an ACSL model translator to the neutral DSblock format.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125310583","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288899
J.S. Luo, A. Johnson, P. V. D. van den Bosch
A new sufficient condition is derived from a general framework for linear state space models maintaining asymptotic stability in spite of existence uncertainty. Constant structured design problem is solved by using a numerical optimization program. In all examples we examined the results of stability robustness analysis and synthesis based on our sufficient condition are less conservative than those of existing methods.<>
{"title":"Stability robustness analysis and design for linear systems with structured time-invariant uncertainty","authors":"J.S. Luo, A. Johnson, P. V. D. van den Bosch","doi":"10.1109/CACSD.1994.288899","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288899","url":null,"abstract":"A new sufficient condition is derived from a general framework for linear state space models maintaining asymptotic stability in spite of existence uncertainty. Constant structured design problem is solved by using a numerical optimization program. In all examples we examined the results of stability robustness analysis and synthesis based on our sufficient condition are less conservative than those of existing methods.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122688961","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288913
C. M. Rimvall, H. Spang, J. A. Farrell, M. Radecki, M. Idelchik
This paper will present the open and extendible architecture of the BEACON modeling and code generation system. We will explain the mapping between BEACON's graphical block-diagram "language" and the target code and show how new graphical modeling blocks and their implementational details can be defined to expand BEACON's capabilities. BEACON is a graphical computer aided control engineering environment which automatically translates block-diagrams into either simulation or real-time computer code. BEACON was developed at GE and has been in production use within the company since the first quarter of 1992.<>
{"title":"An open architecture for automatic code generation using the BEACON CACE environment","authors":"C. M. Rimvall, H. Spang, J. A. Farrell, M. Radecki, M. Idelchik","doi":"10.1109/CACSD.1994.288913","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288913","url":null,"abstract":"This paper will present the open and extendible architecture of the BEACON modeling and code generation system. We will explain the mapping between BEACON's graphical block-diagram \"language\" and the target code and show how new graphical modeling blocks and their implementational details can be defined to expand BEACON's capabilities. BEACON is a graphical computer aided control engineering environment which automatically translates block-diagrams into either simulation or real-time computer code. BEACON was developed at GE and has been in production use within the company since the first quarter of 1992.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131623557","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288902
Ole Ravn, M. Szymkat
Based on a review of user interaction modes and the specific needs of the CACE domain the paper describes requirements for user interaction in future CACE environments. Taking another look at the design process in CACE key areas in need of more user interaction support are pointed out. Three concepts are described through examples, dynamic data access, parallel evaluation and active documentation. The features of existing tools are summarized. The problem of how easily or 'naturally' the novel concepts are integrated is stressed.<>
{"title":"Requirements for user interaction support in future CACE environments","authors":"Ole Ravn, M. Szymkat","doi":"10.1109/CACSD.1994.288902","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288902","url":null,"abstract":"Based on a review of user interaction modes and the specific needs of the CACE domain the paper describes requirements for user interaction in future CACE environments. Taking another look at the design process in CACE key areas in need of more user interaction support are pointed out. Three concepts are described through examples, dynamic data access, parallel evaluation and active documentation. The features of existing tools are summarized. The problem of how easily or 'naturally' the novel concepts are integrated is stressed.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134096907","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288896
A. Johnson
Can a discrete-time, linear system be controlled so that if the initial state x(0) is nonnegative the state x(k) will remain nonnegative for all future k, while at the same time a quadratic cost criterion is minimized? It is known that the nondiagonal elements of the transformed weighting matrices of a finite-horizon cost criterion can be chosen to give a closed-loop matrix which contains no negative elements. The controllable block companion transformation which has to be used must be positive. Here this restrictive condition is removed, allowing the method to be applied to more general systems. The infinite-horizon problem is also solved. Examples are given to demonstrate the method.<>
{"title":"LQ state-constrained control","authors":"A. Johnson","doi":"10.1109/CACSD.1994.288896","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288896","url":null,"abstract":"Can a discrete-time, linear system be controlled so that if the initial state x(0) is nonnegative the state x(k) will remain nonnegative for all future k, while at the same time a quadratic cost criterion is minimized? It is known that the nondiagonal elements of the transformed weighting matrices of a finite-horizon cost criterion can be chosen to give a closed-loop matrix which contains no negative elements. The controllable block companion transformation which has to be used must be positive. Here this restrictive condition is removed, allowing the method to be applied to more general systems. The infinite-horizon problem is also solved. Examples are given to demonstrate the method.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122180862","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288888
T. Satoh, Teruo Ishihara, H. Inooka
Based on the method of inequalities, we propose a computer-aided design method for single-input single-output unity feedback systems accounting the influence of pole-zero cancellations. First, we derive a simple pole-zero placement algorithm which can avoid specified pole-zero cancellations with the order of the controller fixed. Then we propose a simple modification of the search algorithm by taking account of the role of the tuning parameters in the proposed design method. An illustrative design example is also shown.<>
{"title":"Computer-aided control system design accounting pole-zero cancellations by the method of inequalities","authors":"T. Satoh, Teruo Ishihara, H. Inooka","doi":"10.1109/CACSD.1994.288888","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288888","url":null,"abstract":"Based on the method of inequalities, we propose a computer-aided design method for single-input single-output unity feedback systems accounting the influence of pole-zero cancellations. First, we derive a simple pole-zero placement algorithm which can avoid specified pole-zero cancellations with the order of the controller fixed. Then we propose a simple modification of the search algorithm by taking account of the role of the tuning parameters in the proposed design method. An illustrative design example is also shown.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"42 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134140897","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288931
Emmanuel Fernindez-Gaucherand, Jongsup Choi, Daniel D. Gerhart
We present the first report on a software laboratory for stochastic systems control and decision problems: S/sup 2/YSCODE. Two versions have been developed so far, one in FORTRAN 77, and the other in MATLAB. Our principal aims in developing S/sup 2/YSCODE have been to develop a user friendly, interactive and transportable software laboratory for computer-aided control system design and experimentation in stochastic control and decision systems.<>
{"title":"S/sup 2/YSCODE: stochastic systems control and decision algorithms software laboratory, FORTRAN and MATLAB versions","authors":"Emmanuel Fernindez-Gaucherand, Jongsup Choi, Daniel D. Gerhart","doi":"10.1109/CACSD.1994.288931","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288931","url":null,"abstract":"We present the first report on a software laboratory for stochastic systems control and decision problems: S/sup 2/YSCODE. Two versions have been developed so far, one in FORTRAN 77, and the other in MATLAB. Our principal aims in developing S/sup 2/YSCODE have been to develop a user friendly, interactive and transportable software laboratory for computer-aided control system design and experimentation in stochastic control and decision systems.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133202603","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 : 1994-03-07DOI: 10.1109/CACSD.1994.288884
P. Nataraj
We present QFT IIT, a MATLAB toolbox for quantitative feedback theory (QFT)-based synthesis of robust feedback systems. QFT IIT can handle several system classes including linear and nonlinear, single input-output and multi input-output, output and internal variable feedback, and linear distributed with distributed or point feedback types. We used QFT IIT to successfully solve a large number of robust control problems at The Indian Institute of Technology (IIT) Bombay.<>
{"title":"A MATLAB toolbox for QFT-based synthesis of linear/nonlinear lumped and linear distributed systems","authors":"P. Nataraj","doi":"10.1109/CACSD.1994.288884","DOIUrl":"https://doi.org/10.1109/CACSD.1994.288884","url":null,"abstract":"We present QFT IIT, a MATLAB toolbox for quantitative feedback theory (QFT)-based synthesis of robust feedback systems. QFT IIT can handle several system classes including linear and nonlinear, single input-output and multi input-output, output and internal variable feedback, and linear distributed with distributed or point feedback types. We used QFT IIT to successfully solve a large number of robust control problems at The Indian Institute of Technology (IIT) Bombay.<<ETX>>","PeriodicalId":197997,"journal":{"name":"Proceedings of IEEE Symposium on Computer-Aided Control Systems Design (CACSD)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116477012","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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