模糊自适应PID液压变桨距控制

Fuzzy self-adaptive PID control in hydraulic variable-pitch system

风力发电机变桨距系统具有非线性、参数时变性等特点,结合PID控制和模糊控制原理,提出了模糊自适应PID液压变桨距控制;在所设计的电液伺服控制实验平台上进行了控制仿真试验;试验结果表明模糊自适应PID比常规PID控制具有良好的静动态性能,能对风力机桨距角进行有效地控制。

In order to solve nor-linear and parameter time changing problems of variable-pitch system of wind power generator,it designed a fuzzy self-adaptive PID controller used in Hydraulic variable - pitch system based on conventional PID control and fuzzy control principle. It is simulated on the electro-hy- draulic serve test equipment which we build. The simulation result indicates that it has better characters both in dynamic and static than conventional PID controller and can effectively control the pitch angle.