A modified robust adaptive control with dead zone for nonlinear plants with bounded disturbance. (English) Zbl 1057.93022
Summary: Based on Lyapunov stability theory, a typical adaptive control system with dead zone is first proposed for a class of nonlinear plants with bounded disturbance. It is shown that a larger state tracking error norm is given when a conservative dead zone value is set to achieve a stable adaptive control scheme for the plant subjected to a bounded disturbance. To solve this problem, a modified adaptive control with dead zone scheme is proposed. The proposed adaptive control scheme is proved to be stable and the state tracking error norm can be reduced.
MSC:
93C40 | Adaptive control/observation systems |
93D05 | Lyapunov and other classical stabilities (Lagrange, Poisson, \(L^p, l^p\), etc.) in control theory |