变参数PID控制器

在分析PID控制基本原理的基础上，提出了一种改进的PID控制器——变参数PID控制器 ．该控制器根据控制偏差的大小通过非线性函数在线改变PID三个控制参数的大小，以获得 满意的控制性能．本文给出了该控制器的三种结构，将这三种结构与常规PID控制器进行了 对比仿真实验，结果表明这三种结构的性能均优于后者．本文还就该控制器的抗干扰性能、 鲁棒性能、对非最小相位系统的适用性进行了仿真．仿真结果表明，该控制器性能良好．

PID CONTROLLER WITH VARIABLE ARGUMENTS

This paper presents a PID controller with variable arguments (shortened as VAPID), in which the nonlinear functions are employed to change the PID parameters on line according to the system error. Three kinds of VAPID, of which the performance is all better than that of the ordinary PID controller, are provided. It also shows better performance of disturbance rejecting and robustness, and can be applied to the non minimal phase system.