PID controller tuning for integrating processes

被引：94

作者：

Ali, Ahmad ^{[1
]}

Majhi, Somanath ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, Patna 800013, Bihar, India

[2] Indian Inst Technol, Elect & Commun Engn Dept, Gauhati 781039, Assam, India

来源：

ISA TRANSACTIONS | 2010年 / 49卷 / 01期

关键词：

Integrating process; Nyquist curve; PID controller;

D O I：

10.1016/j.isatra.2009.09.001

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Minimizing the integral squared error (ISE) criterion to get the optimal controller parameters results in a PD controller for integrating processes. The PD controller gives good servo response but fails to reject the load disturbances. In this paper, it is shown that satisfactory closed loop performances for a class of integrating processes are obtained if the ISE criterion is minimized with the constraint that the slope of the Nyquist curve has a specified value at the gain crossover frequency. Guidelines are provided for selecting the gain crossover frequency and the slope of the Nyquist curve. The proposed method is compared with some of the existing methods to control integrating plant transfer functions and in the examples taken it always gave better results for the load disturbance rejection whilst maintaining satisfactory setpoint response. For ease of use, analytical expressions correlating the controller parameters to plant model parameters are also given. (C) 2009 ISA. Published by Elsevier Ltd. All rights reserved.

引用

页码：70 / 78

页数：9

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