模型参考自适应模糊控制的液压伺服控制系统探讨

Discussion on hydraulic servo control system of model reference adaptive fuzzy control

针对非线性的液压伺服控制系统,研究了一种模型参考模糊自适应控制方式,可对PID控制器的比例系数进行自动调节;并提出了变积分系数的控制方法,来消除扰动引起的稳态误差。通过MATLAB仿真表明,该控制方式具有很高的稳态精度和很快的动态特性,从而整个控制系统具有良好的适应性。

Aiming at the non-linear hydraulic servo control system,a model reference fuzzy adaptive control method is studied,which can automaticlly adjust the proportionality coefficient of the PID controller so as to reduce the overshoot and oscillation caused by the disturbance in the control system.At the same time,The control method of variable integral coefficient is proposed to eliminate the steady-state error caused by disturbance.Finally,the MATLAB simulation results show that the control method has very high steady-state precision and very fast dynamic characteristics,so that the whole control system has the good adaptability.