作　　者： ; ;

机构地区： 浙江科技学院机械与汽车工程学院

出　　处： 《机床与液压》 2013年第5期142-144,共3页

摘　　要： 给出一种针对单输入、单输出的闭环反馈控制系统的PID控制器参数整定新方法。建立闭环控制系统的传递函数,根据特征方程的根轨迹法求出满足控制系统稳定性要求的目标方程组,基于李雅普诺夫稳定性判据推导出PID控制器参数整定的计算公式。针对典型工业一阶迟延过程近似简化模型和永磁同步直线电机控制模型,输入阶跃信号和干扰信号进行性能仿真对比和分析。仿真结果表明:所计算出的PID控制器参数使系统具有良好的跟随性和一定的抗干扰性;整定方法便捷有效,不仅适用于时滞对象,也适用于非时滞对象,具有实际应用推广价值,但由于计算量大需借助计算机予以实现。 Aiming at single input single output system with closed loop feedback control, a novel parameter tuning method of PID controller was proposed. The target equations satisfied with the requirements of control system stability were derived by root locus meth- od using the characteristic equation. Then the parameter calculation formula of PID controller was deduced on the basis of the Lya- punov stability criterion. The analysis and comparison of performance simulation on representative industrial processes were given in detail, such as first-order plus dead-time process and electromechanical control model of DC motor. Simulation results show that pro- posed tuning method is simple and useful, easy to realize, has good tracking performance and robust stability to disturbance. It is appropriate not only for processes with time delay, but also for without time delayed models with significant advantages for wide application prospect. But it should be accomplished with computer technology because of large amount of calculation.

关 键 词： 闭环反馈控制 控制器 李雅普诺夫稳定性 参数整定

领　　域： [自动化与计算机技术] [自动化与计算机技术]