摘要
电液位置伺服控制系统是一个非线性系统,且伺服阀具有死区非线性特性以及受零偏、泄漏等各种复杂因素的影响。一般采用的常规线性PID控制器难以协调快速性与超调性之间的矛盾。基于LabVIEW平台,针对电液伺服系统的非线性和不确定性等特性研究设计出非线性PID控制器,并与PID控制算法进行比较。实验结果表明,非线性PID控制器中的增益参数能够随控制误差而变化,使控制系统既响应快又无超调现象,抗干扰能力也优于传统的PID控制,改善了系统的性能。
Electro-hydraulic position servo control system is a system with nonlinear characteristics. Only used the PID controler can not to slove the contradiction with fast and overshoot. The paper basing on platform of software LabVIEW,aiming at the control problem of electro-hydraulic position servo control system with nonlinear,design the nonlinear PID control and compared with PID. Experimental result shows that the gain parameters of nonlinear PID controller can change with the control error, and can get fast response and small overshoot, the effect of nonlinear PID control is better than PID in fast,accuracy and stability.
出处
《机电一体化》
2014年第10期46-50,55,共6页
Mechatronics
