N. Doerry, J. Amy, M. Tolikas, J. Kirtley, M. Ilić
{"title":"Object Oriented Approach to the Simulation of Shipboard Electric Power Systems","authors":"N. Doerry, J. Amy, M. Tolikas, J. Kirtley, M. Ilić","doi":"10.1109/ACC.1992.4175387","DOIUrl":"https://doi.org/10.1109/ACC.1992.4175387","url":null,"abstract":"An object oriented approach for time domain simulations of shipboard electric power systems is proposed. It offers a flexible, user friendly alternative to conventional simulators, allowing design and operation analysis under a variety of operating conditions and topologies. The most general model of an electric power system consists of a set of nonlinear differential equations subject to algebraic constraints, which describes the evolution of the System, following certain contingencies. The algorithm presented adopts an object oriented approach by decomposing the system into its underlying components/devices, developed and maintained independent of one another. The differential equations are solved on the device level using a waveform representation of variables, which exploit both partitioning and parallel processing features. The ideas presented are tested on different test cases and conclusions are drawn.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131443648","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}
H. Peng, T. Hessburg, M. Tomizuka, Wei-bin Zhang, Ye Lin, P. Devlin, S. Shladover, A. Arai
{"title":"A Theoretical and Experimental Study on Vehicle Lateral Control","authors":"H. Peng, T. Hessburg, M. Tomizuka, Wei-bin Zhang, Ye Lin, P. Devlin, S. Shladover, A. Arai","doi":"10.23919/ACC.1992.4792408","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792408","url":null,"abstract":"The results of an experimental work on the lateral control of a full-scaled vehicle are reported in this paper. Two control algorithms were tested, a simple PID controller to serve as the baseline, and an optimal preview controller, which was developed to improve the tracking performance, ride quality and robustness of the system. The theoretical development and the experimental setup are briefly discussed, followed by some experimental results.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128849860","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}
{"title":"Bound Equation for Multivariable Quantitative Feedback Theory","authors":"S. Wang, C. Chen, G. G. Wang","doi":"10.23919/ACC.1992.4792214","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792214","url":null,"abstract":"Equations for the loop transmission bound for the multivariable Quantitative Feedback Theory are presented nere. These equations are useful in the computer - aided design of multivariable control systems.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131663322","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}
{"title":"Design of Periodic Output Feedback for Robust Stability","authors":"J. L. Rawson, C. Hsu","doi":"10.23919/ACC.1992.4792237","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792237","url":null,"abstract":"Discrete-time H¿ results are applied to the design of piecewise-constant, periodic output feedback systems for stability robustness with respect to additive perturbations of the plant state matrix.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"522 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127055403","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}
{"title":"Control of Joint Motion Simulators for Biomechanical Research","authors":"R. Colbaugh, K. Glass","doi":"10.23919/ACC.1992.4792381","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792381","url":null,"abstract":"This paper presents a hierarchical adaptive algorithm for controlling upper extremity human joint motion simulators. A joint motion simulator is a computer-controlled, electromechanical system which permits the application of forces to the tendons of a human cadaver specimen in such a way that the cadaver joint under study achieves a desired motion in a physiologic manner. The proposed control scheme does not require knowledge of the cadaver specimen dynamic model, and solves on-line the so-called \"indeterminate problem\" which arises because human joints typically possess more actuators than degrees of freedom. Computer simulation results are given for an elbow/forearm system and wrist/hand system under hierarchical control, and demonstrate that any desired normal joint motion can be accurately tracked with the proposed algorithm. Additionally, these simulations indicate that the controller resolves the \"indeterminate problem\" redundancy in a physiologic manner, and show that the control scheme is robust to parameter uncertainty and to sensor noise.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127430849","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}
{"title":"Steering a flexible spacecraft between equilibrium points","authors":"P. Lucibello","doi":"10.23919/ACC.1992.4792476","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792476","url":null,"abstract":"An investigation on the control of a flexible spacecraft is presented. The problem addressed is state transfer between equilibrium points. A perturbation technique is used to build up both a learning algorithm, which steers the spacecraft system in a finite tune interval, as well as a discrete feed back scheme for asymptotic reonentetion. Two numerical examples are also worked out.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115555099","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}
{"title":"Extensions of Estimation and Control by Covariance Assignment","authors":"E. Yaz, B. Kaufman, W. NaNacara, A. Azemi","doi":"10.1109/ACC.1992.4175421","DOIUrl":"https://doi.org/10.1109/ACC.1992.4175421","url":null,"abstract":"Four extensions of the state and estimation error covariance assignment algorithms are presented in this work.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115634570","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}
{"title":"Fault Detection in Heat Exchangers","authors":"D. Himmelblau","doi":"10.23919/ACC.1992.4792559","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792559","url":null,"abstract":"We have examined the feasibility of using artificial neural networks for the detection of faults in steady state operation of heat exchangers, and compared the results with standard statistical and nearest neighbor classification methods. Both deviations from normal states of measurements as well as physical causes of the faults were investigated. The results of using artificial neural nets and nearest neighbor classification were surprisingly sensitive and superior to discrimination methods.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115778723","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}
{"title":"Process Modelling and Control in Metal Forming","authors":"A. Kumar, R. Grandhi, A. Chaudhary, D. Irwin","doi":"10.1109/ACC.1992.4175187","DOIUrl":"https://doi.org/10.1109/ACC.1992.4175187","url":null,"abstract":"In this paper, the state space modelling of metal forming and off-line design of process variables are addressed. A reduced order approach is used to develop state equations for the non-linear finite element model of deformation processes. The influence of optimally designed process variables is studied using the variance in strain-rates and input power as performance measures. The state variables include the forging die contact nodal velocities and nodal velocities of selected elements within the billet. The control input is the ram velocity which is found using the Linear Quadratic Regulator (LQR) theory to maintain desired strain-rates in the selected finite elements. The condensation techniques required to build the state space model and the results obtained from controlling various bulk deformation processes are discussed with examples.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115807320","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}
{"title":"Relaxed Quadratic Stabilizability Criteria","authors":"H. Kokame, T. Mori","doi":"10.23919/ACC.1992.4792671","DOIUrl":"https://doi.org/10.23919/ACC.1992.4792671","url":null,"abstract":"The present paper points out that a well-known quadratic stabilizability condition of uncertain linear systems can be generalized by relaxing the positive definiteness constraint on the quadratic Lyapunov function. This result yields a simple criterion which is useful to preserve the quadratic stabilizability of the target system.","PeriodicalId":297258,"journal":{"name":"1992 American Control Conference","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115893380","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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