摘要

In order to make the electronic converter be of better performance, by analyzing the characteristic of the classical PID control, a new type of nonlinear PID control method-auto-disturbance rejection control (ADRC) is proposed. The control theory and the structure of ADRC are presented;the simulation and experimental results are also given when the method is applied to Buck-Boost DC-DC converter. The results prove that ADRC controller can achieve in good effects such as strong robustness, stability and adaptability against the parameters perturbation and the extraneous disturbance. ADRC not only improves the conventional PID control, but also remains its advantages of the simple structure and strong robustness. It is demonstrated that ADRC is an effective control method and it has a promising future for nonlinear system and unstable plant.

全文