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Iterative learning control(ILC) is used to track the trajectory of repetitive motion, especially for industrial robot. The proposed control scheme is based upon the feedback of tracking error and corresponding change rate, which construct a switching surface, with the use of a proportional structure, for which it is called sliding mode-like P-type ILC. In addition, an adaptive item was added to not...
Aiming at the stability of smart structure vibration control, a model reference adaptive control (MRAC) algorithm based on Lyapunov's second method is used to suppress vibration of a simple plate. The state equations of Piezoelectric plate first-order and second-order mode are put forward and two adjustable parameters are determined. MRAC combining feedforward and feedback control style needn't be...
This paper addresses a class of uncertain stochastic nonlinear pure-feedback systems with unknown control direction. With using the decoupled backstepping technique, adaptive neural control schemes are designed to solve the stabilization problem of such systems. Stability analysis is presented to guarantee that all the error variables are semi-globally ultimately bounded with desired probability in...
This paper is devoted to the problem of L2-L∞ control for a class of stochastic time-delay systems via observer-based feedback control. The considered observer contains no time-delay. The purpose is to design an observer-based feedback stabilizing controller such that the augmented closed-loop system is stochastically asymptotically stable with a prescribed L2-L∞ performance satisfied. Based on the...
In this paper, the guaranteed cost control with adjustable parameters for linear time-delay systems is studied. Firstly, the guaranteed cost controller with adjustable parameters is designed, and the sufficient condition for the controller existing is given in the form of LMI. And then, by designing the adaptive law of adjustable parameter, the adaptive guaranteed cost control is discussed. When adjustable...
According to the unknown control direction strict feedback nonlinear systems, this paper introduced a design process for time-varying nonlinear adaptive controller by introducing the Nussbaum increasing and the dead area revision algorithm. Its stability is proved and analyzed, and its simulation is designed with the LMI MATLAB toolbox, the result shows that the controller has a good performance.
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