Adaptive neural control for uncertain stochastic nonlinear strict-feedback systems with time-varying delays: A Razumikhin functional method

Authors:
Zhaoxu Yu;Hongbin Du
Affiliations:
Department of Automation, East China University of Science and Technology, Shanghai 200237, China;Department of Automation, East China University of Science and Technology, Shanghai 200237, China
Venue:
Neurocomputing
Year:
2011

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Abstract

This paper addresses the problem of adaptive neural control for a class of uncertain stochastic nonlinear strict-feedback systems with time-varying delays. A novel adaptive neural control scheme is presented for this class of systems, based on a combination of the Razumikhin functional approach, the backstepping technique and the neural network (NN) parameterization. The proposed adaptive controller guarantee that all the error variables are 4-Moment semi-globally uniformly ultimately bounded in a compact set while the system output converges to a small neighborhood of the reference signal. Two simulation examples are given to demonstrate the effectiveness of the proposed control schemes.