A Kind of Robust Adaptive Controller

This paper gives a research about a class of linear system with uncertainty of parameters and extemal time- varying input disturbance. (I) A united real-time identification method is presented for parameters and disturbance of system, that is, parameters and external disturbance are estimated at the same time without model of disturbance. And the disturbance is compensated online according to the results of identification. (2) A dual adaptive controller is designed. This controller can rejected the effect of uncertainty of parameters and eliminates the bad phenomena of conventional adaptive control systems, such as "turn off. "windup" and "bursting". so the robustness of adaptive control system is enhanced. At last, the effectiveness is proved by a simulation example.