Results 231 to 240 of about 1,006,043 (267)
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Supervisory Control of Uncertain Linear Time-Varying Systems
IEEE Transactions on Automatic Control, 2011We consider the problem of adaptively stabilizing linear plants with unknown time-varying parameters in the presence of noise, disturbances, and unmodeled dynamics using the supervisory control framework, which employs multiple candidate controllers and an estimator based switching logic to select the active controller at every instant of time.
Linh Vu, Daniel Liberzon
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Aspects of controllability and observability for time-varying PDE systems
2012 American Control Conference (ACC), 2012There are many industrial and biological reaction-diffusion systems which exhibit time-varying features where certain parameters of the system change during the process. The underlying transport-phenomena are often modelled using parabolic partial differential equations (PDEs) with time-varying coefficients which describe the dynamics of the process ...
James Ng +2 more
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Adaptive control for a class of nonlinear time-varying systems
Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001Adaptive control for nonlinear time-varying systems is of both theoretical and practical importance. We present an adaptive control methodology for a class of nonlinear systems with a time-varying structure where radial basis function neural networks are used as on-line approximators.
Yixin Diao, Kevin M. Passino
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Stability of Networked Control Systems with Time-Varying Delays
IEEE Communications Letters, 2007A robust Smith predictor is proposed to compensate for the round trip delay of networked control systems (NCSs); An analytical TCP model is adopted. We show that stability of the closed-loop system is guaranteed up to some maximum upper bound of the round trip ...
Chun-Hsiung Chen +2 more
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Adaptive control for a class of time-varying nonlinear systems
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000In this paper we present a direct adaptive control method for a class of time-varying nonlinear systems with unknown nonlinearities. We view the time-varying systems as composed of a finite number of "pieces," which are interpolated by functions that depend on a possibly exogenous scheduling variable.
Raúl Ordóñez, Kevin M. Passino
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Controllability of time‐varying fractional dynamical systems with prescribed control
Mathematical Methods in the Applied SciencesThe study of this article deals with the controllability results for time‐varying fractional dynamical systems in terms of Caputo‐type fractional derivatives having a prescribed or predetermined control. We demonstrate the controllability results for time‐varying linear fractional dynamical systems using Gramian technique and fractional calculus ...
P. Karthiga +2 more
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ADAPTIVE CONTROL OF A CLASS OF LINEAR TIME VARYING SYSTEMS
IFAC Proceedings Volumes, 1983The key contribution of the paper is to develop a new and explicit characterisation of the concept of persistency of excitation for time invariant systems in the presence of possibly unbounded signals. The implication of this result in the adaptive control of a class of linear time varying systems is also investigated.
G.C. Goodwin, Eam Khwang Teoh
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ABSOLUTE STABILITY OF TIME-VARYING NONLINEAR CONTROL SYSTEM
Acta Mathematica Scientia, 1999In the paper, two classes of time-varying, finite-dimensional nonlinear control systems are considered. Some definitions of absolute stability of the control system are given. Next, sufficient conditions of absolute stability of these control systems are formulated and proved. In the proofs of the main results the analogue of the variation of constants
Xiao, Dongmei, Deng, Zongqi
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On Control-Lyapunov Functions for Hybrid Time-Varying Systems
Proceedings of the 45th IEEE Conference on Decision and Control, 2006We explicitly construct strict input-to-state stable Lyapunov functions for time varying hybrid systems, in terms of given nonstrict Lyapunov functions and persistency of excitation parameters. This provides a hybrid analog of our earlier continuous time Lyapunov function constructions.
Malisoff, Mickael, Mazenc, Frédéric
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Simultaneous controller design for time-varying linear systems
Systems & Control Letters, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tianqiu Yu, Han Yan
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