Results 251 to 260 of about 2,626,429 (291)

Nonstationary robust control for time-varying system

Proceedings of the 2004 American Control Conference, 2004
This work presents a synthesis method of nonstationary robust controller for a time-varying system considering various uncertainties. For the uncertainties, a scaled structured uncertainty is regarded as weightings for variations of parameters and a design function in the time domain.
M. Otsuki, K. Yoshida
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Adaptive Control of Time Varying Stochastic Systems

IFAC Proceedings Volumes, 1990
In many practical applications, the system structure is often unknown or just partially known; not only may it suffer from random disturbances but also its parameters may vary with time. The drifting or jumping phenomena of parameters in a system is one of the motivations for adaptive control since classical design methods may be difficult to use for ...
S.P. Meyn, L. Guo
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Adaptive control of simple time-varying systems

Proceedings of the 28th IEEE Conference on Decision and Control, 2003
The adaptive control of simple linear time-varying systems is treated for the case in which their parameters vary arbitrarily in an unknown compact set. The state variables of these systems are assumed to be available for measurement. It is shown that all the signals in the adaptive system are bounded for any bounded reference input.
A.M. Annaswamy, K.S. Narendra
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Adaptive Control for Time-varying Nonlinear System

2009 International Conference on Computer and Automation Engineering, 2009
An adaptive control scheme is proposed for a kind of time-varying nonlinear systems. In the scheme the nonlinear systems are divided into a finite number of subsystems, which are in strict feedback and interpolated by functions of an exogenous scheduling variable. The adaptive method yields stability of all signals in the closed-loop.
null Lin Niu, null Bin Chen, null Liaoyuan Ye   +2 more
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Adaptive control of linear time varying systems

Proceedings of 35th IEEE Conference on Decision and Control, 2002
A new class of adaptive controllers for linear time varying systems is designed and analyzed using nonlinear design techniques and the certainty-equivalence approach. It is established that this new class of controllers guarantees robustness with respect to unknown but slow parameter variations in the global sense.
null Youping Zhang, P.A. Ioannou
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Adaptive Control of Time-Varying Nonlinear Systems

2008
The task of this chapter is to introduce a new scheme to design adaptive controllers for single-input single-output uncertain time-varying systems in the presence of unknown bounded disturbances. No knowledge is assumed on the sign of the term multiplying the control.
Jing Zhou, Changyun Wen
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Adaptive control of time-varying linear systems

IEEE Transactions on Automatic Control, 1988
This well-written paper examines stability and robustness (with respect to unmodeled dynamics) of continuous-time adaptive controllers for linear time-varying continuous-time systems with bounded, slowly varying parameters, or parameters with infrequent jumps.
Middleton, Richard H., Goodwin, Graham C.   +1 more
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Time-Varying Vector Fields and Control Systems

2014
We now turn to utilising the locally convex topologies from the preceding chapter to characterise time-varying vector fields and control systems. We shall see that the use of locally convex topologies allows for a comprehensive and unified treatment of these notions, and allows one to understand in a deep way their structure in a way which has hitherto
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Robust control of periodically time-varying systems

2015
In this dissertation, a practical control design method for linear periodically time varying systems is presented. The method is based on parametrization of control, and obtaining an equivalent discrete-time control system via a point-mapping computational algorithm. The design method simplifies the design procedure, and guarantees asymptotic stability
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Decentralized Adaptive Control of Time-Varying Systems

IFAC Proceedings Volumes, 1995
Abstract In this paper, a new decentralized adaptive control scheme is presented for large scale time-varying systems with disturbances and nonlinear interconnections between subsystems. The scheme can be used in the case of fast time-varying systems with unknown structures of the parameters.
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