Study on linear active disturbance rejection control based on robust control theory

Aim to the designing of the active disturbance rejection controller based on robust control theory, a method of designing linear active disturbance rejection control with robust synthesizes theory is proposed by the combination of the robust control theory and classical linear active disturbance rejection control. The mix H2/H∞ norm controller estimate method is also proposed. Simulation experiment is performed on the helicopter examination system which have critical aerodynamics unstable characteristics. Results show that compare to traditional control method, the response time has risen by 42.23%; the overshoot has reduced by 9.83%; there is no static error and the robustness is improved too.