时滞不稳定过程PID控制器直接设计法

Direct Synthesis of PID Controllers for Time Delayed Unstable Processes

直接在时域上设计时滞不稳定过程比例积分微分(PID)控制器。采取双回路三环节的控制结构,目标是优化两个时域指标-阻尼系数和积分增益。然后,合并三个环节得到设定值加权PID控制器。仿真表明该方法是有效的,具有好的鲁棒稳定性和性能。

An approach of direct synthesis of proportional,integral,and derivative controller（PID） for time delayed unstable process is presented.This controller is consist of three elements which are sited into two feedback loop,and the requirments of control system are described by time domain indexes： damping coefficient and integral gain.These three elements can be combined into the set-point weighted PID controller.Simulation results show that the proposed approach is an effective method and has proper robustness and performances.