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Stochastic adaptive backstepping controller design by introducing dynamic signal and changing supply function. (English) Zbl 1124.93057
Summary: A more general class of stochastic non-linear systems with unmodelled dynamics and uncertain non-linear functions are considered in this paper. With the concept of ISpS being extended to stochastic case, by combining changing supply function technique with backstepping design technique, an adaptive output-feedback controller is proposed. It is shown that all the solutions of the closed-loop system are uniformly bounded in probability, and the output can be regulated to an arbitrarily small neighbourhood of the origin in probability. A simulation example demonstrates the control scheme.
MSC:
93E03General theory of stochastic systems
93C40Adaptive control systems
93C10Nonlinear control systems
93B52Feedback control