PID tuning for unstable processes based on gain and phase-margin specifications
PID tuning for unstable processes based on gain and phase-margin specifications
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DOI：
10.1049/ip-cta:19982243
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发表时间：
1998-09
期刊：
影响因子：
--
通讯作者：
W. Ho;W. Xu
中科院分区：
文献类型：
--
作者：
W. Ho;W. Xu
PID控制被广泛应用于稳定过程的控制，然而，对于不稳定过程的PID控制却很少见。本文给出了满足增益和相位裕度要求的不稳定过程的PID控制器整定的简单公式。闭环系统的稳定性由奈奎斯特稳定性判据保证。给出了一阶和二阶时滞过程的计算公式。仿真结果表明了该公式的准确性和所能达到的性能。
PID control is widely used to control stable processes, however, PID control for unstable processes is less common. In the paper, simple formulas are derived to tune the PID controller for unstable processes to meet gain and phase margin specifications. The stability of the closed-loop system is ensured by the Nyquist stability criterion. These formulas are derived for first- and second-order processes with time delay. Simulation results are given to show the accuracy of the formulas and the performance that can be achieved.