State Constraint Controller Design for Turbine Main Steam Valve Based on Modified Adaptive Backstepping Method

A adaptive controller of the steam turbine main steam valve with state constraints and parameters uncertainty is designed based on modified adaptive backstopping method. Compared with the traditional backstopping method, the class-k functions are introduced in the recursive design procedure of the feedback control law in order to improve the transient response of the closed-loop system, and the controller gain approach to the traditional one when the time tends to be infinite. The design process of the controller is systematic and concise. The simulation results show the effectiveness of the design method.