Adaptive NN Controller Design for a Class of Nonlinear MIMO Discrete-Time Systems

作者: Yan-Jun Liu , Li Tang , Shaocheng Tong , C. L. Philip Chen

DOI: 10.1109/TNNLS.2014.2330336

关键词: Lyapunov functionMIMOBacksteppingNonlinear systemAdaptive controlArtificial neural networkDiscrete time and continuous timeMathematicsControl theoryBounded function

摘要: An adaptive neural network tracking control is studied for a class of multiple-input multiple-output (MIMO) nonlinear systems. The systems are in discrete-time form and the discretized dead-zone inputs considered. In addition, MIMO composed $N$ subsystems, each subsystem contains unknown functions external disturbance. Due to complicated framework systems, existence dead zone noncausal problem discrete-time, it brings about difficulties controlling such To overcome problem, by defining coordinate transformations, transformed into special form, which suitable backstepping design. radial basis NNs utilized approximate adaptation laws controllers designed based on By using Lyapunov method, proved that closed-loop system stable sense semiglobally uniformly ultimately bounded all signals errors converge compact set. simulation examples comparisons with previous approaches provided illustrate effectiveness proposed algorithm.

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