{"title":"State feedback gain scheduling for linear systems with time-varying parameters","authors":"V. Montagner, P. Peres","doi":"10.1115/1.2194074","DOIUrl":"https://doi.org/10.1115/1.2194074","url":null,"abstract":"This paper addresses the problem of parameter dependent state feedback control (i.e. gain scheduling) for linear systems with parameters that are assumed to be measurable in real time and are allowed to vary in a compact polytopic set with bounded variation rates. A new sufficient condition given in terms of linear matrix inequalities permits to determine the controller gain as a function of the time-varying parameters and of a set of constant matrices. The closed-loop stability is assured by means of a parameter dependent Lyapunov function. The condition proposed encompasses the well known quadratic stabilizability condition and allows to impose structural constraints such as decentralization to the feedback gains. Numerical examples illustrate the efficiency of the technique.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133228462","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":"Decentralized disturbance attenuation for large-scale nonlinear systems with delayed state interconnections","authors":"Yi Guo","doi":"10.2316/Journal.201.2006.2.201-1608","DOIUrl":"https://doi.org/10.2316/Journal.201.2006.2.201-1608","url":null,"abstract":"The problem of decentralized disturbance attenuation is considered for a new class of large-scale nonlinear systems with delayed state interconnections. This class of large-scale time-delay systems broadens most existing classes of large-scale time-delay systems in that the uncertain interconnections are bounded by general nonlinear functions instead of linear or polynomial-type functions. It is shown that by decentralized memoryless state feedback control, the closed-loop system achieves internal global asymptotical stability in the sense of Lyapunov and external stability in the sense of L/sub 2/ gain. Nonlinear Lyapunov-Krasovskii functionals are constructed which renders the linear and polynomial-type growth conditions on the interconnections as special cases.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134051979","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":"Sensitivity of time response to characteristic ratios","authors":"Youngcho Kim, Keunsik Kim, S. Manabe","doi":"10.1093/ietfec/e89-a.2.520","DOIUrl":"https://doi.org/10.1093/ietfec/e89-a.2.520","url":null,"abstract":"In recent works, it has been shown that the damping of a linear time invariant system relates to the so-called characteristic ratios (/spl alpha//sub k/, k = 1,/spl middot//spl middot//spl middot/,n - 1) which are defined by coefficients of the denominator of the transfer function. However, the exact relations are not yet fully understood. For the purpose of exploring the issue, this paper presents the analysis of time response sensitivity to the characteristic ratio change. We begin with the sensitivity of output to the perturbations of coefficients of the system denominator and then the first order approximation of the /spl alpha//sub k/ perturbation effect is computed by an explicit transfer function. The results are also extended to the two kinds of all-pole systems. Finally, some illustrative examples are given.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130965286","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":"Task-space adaptive setpoint control for robots with uncertain kinematics and actuator model","authors":"Chao Liu, C. Cheah","doi":"10.1109/TAC.2005.858664","DOIUrl":"https://doi.org/10.1109/TAC.2005.858664","url":null,"abstract":"In this paper, we proposed a new task-space setpoint control scheme for robots with uncertainties in kinematics, actuators and dynamics. The stability problem of the robot in the presence of these uncertainties is formulated and solved. Sufficient conditions for choosing the feedback gains and approximate models are given to guarantee the convergence of the task-space position error. Simulation results based on a 3-link robot are presented to illustrate the performance of the proposed scheme.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133843462","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}
D. Rausen, A. Stefanopoulou, Junmo Kang, J. Eng, T. Kuo
{"title":"A mean-value model for control of homogeneous charge compression ignition (HCCI) engines","authors":"D. Rausen, A. Stefanopoulou, Junmo Kang, J. Eng, T. Kuo","doi":"10.23919/ACC.2004.1383591","DOIUrl":"https://doi.org/10.23919/ACC.2004.1383591","url":null,"abstract":"A mean value model (MVM) for a homogeneous charge compression ignition (HCCI) engine is presented. Using a phenomenological zero-dimensional approach with five continuous and three discrete states we first model the effects of the exhaust gas recirculation (EGR) valve, the exhaust rebreathing lift (RBL), and the fueling rate on the state of charge in the cylinder at intake valve closing. An Arrhenius integral is then used to model the start of combustion, /spl theta//sub SOC/. A series of simple algebraic relations that captures the combustion duration and heat release is finally used to model the state of charge after the HCCI combustion and the location of peak pressure (LPP). The model is parameterized and validated using steady-state test data from an experimental engine at the General Motors Corporation. The simple model captures the temperature, pressure, air-to-fuel ratio, and inert gas fraction of the exhausted mass flow. This characterization is important for the overall HCCI dynamics because the thermodynamic state (pressure, temperature) and concentration (oxygen and inert gas) of the exhausted mass flow affect the next combustion event. The high dilution level in HCCI engines increases the significance of this internal feedback that generally exists to a smaller extent in conventional spark-ignition and compression-ignition internal combustion engines.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115474380","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":"Adaptive fuzzy sliding control for a three-link passive robotic manipulator","authors":"S. Elangovan, P. Woo","doi":"10.1017/S0263574704001079","DOIUrl":"https://doi.org/10.1017/S0263574704001079","url":null,"abstract":"An adaptive fuzzy sliding control (AFSC) scheme is proposed to control a passive robotic manipulator. The motivation for the design of the adaptive fuzzy sliding controller is to eliminate the chattering and the requirement of pre-knowledge on the bounds of the errors associated with the conventional sliding control. The stability and convergence of the adaptive fuzzy sliding controller are proven both theoretically and practically by simulations. A three-link passive manipulator model with two unactuated joints is derived to be used in the simulations. Simulation results demonstrate that the proposed system is robust against structured and unstructured uncertainties.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126239319","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":"Optimal recursive estimation for discrete-time descriptor systems","authors":"J. Ishihara, M. Terra, José C. T. Campos","doi":"10.1080/00207720500219302","DOIUrl":"https://doi.org/10.1080/00207720500219302","url":null,"abstract":"The optimal recursive estimation problem for general time-variant descriptor systems is considered in this paper. We show that the filter recursion can be obtained as solution of appropriate data fitting problems. We can consider the fitting evolving the entire trajectory at once or consider a one step correction.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127225177","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":"A scaled feedback stabilization of power integrator triangular systems","authors":"Dragan B. Dacic, P. Kokotovic","doi":"10.1016/j.sysconle.2004.11.004","DOIUrl":"https://doi.org/10.1016/j.sysconle.2004.11.004","url":null,"abstract":"","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120175405","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":"Flight testing of a reconfigurable control system on an unmanned aircraft","authors":"D. Shore, M. Bodson","doi":"10.23919/ACC.2004.1384495","DOIUrl":"https://doi.org/10.23919/ACC.2004.1384495","url":null,"abstract":"A radio-controlled aircraft was built and equipped with air-data and inertial sensors. A radio frequency link was added to transmit data and receive commands from a ground station. Data from several flight tests were used to characterize the dynamic response of the aircraft. Despite the high level of noise associated with the low-cost sensor suite, consistent identification of critical aircraft parameters was obtained. Flight tests were also conducted with actuator failures induced on one elevator, one aileron, and one engine. Recursive parameter identification produced parameters tracking the effects of the failures, such as reduced effectiveness of pitch commands due to a locked elevator, or roll and sideslip due to engine failure. The identified parameters were also used in reconfigurable control experiments, where knowledge of the aircraft parameters was used to compensate for the effect of failures, reducing the pilot's workload. Overall, the paper demonstrates that recursive identification and reconfigurable control algorithms are implementable in real-time, even in low-cost platforms. They can be designed to effectively compensate for actuator failures and aircraft damage.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129802252","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":"Tracking of multiple maneuvering targets using multiscan JPDA and IMM filtering","authors":"S. Puranik, Jitendra Tugnait","doi":"10.1109/ACC.2005.1470273","DOIUrl":"https://doi.org/10.1109/ACC.2005.1470273","url":null,"abstract":"We consider the problem of tracking multiple maneuvering targets in the presence of clutter using switching multiple target motion models. A novel suboptimal filtering algorithm is developed by applying the basic interacting multiple model (IMM) approach and joint probabilistic data association (JPDA) technique. But unlike the standard single scan JPDA approach, we exploit a multiscan joint probabilistic data association (Mscan-JPDA) approach to solve the data association problem. The algorithm is illustrated via a simulation example involving tracking of three maneuvering targets and a multiscan data window of length two.","PeriodicalId":153850,"journal":{"name":"Proceedings of the 2004 American Control Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128876401","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}