一阶时滞对象的最优内模PID控制

作者：王浩坤，尚群立 日期：2008-02-25/span> 浏览：4282 查看PDF文档

一阶时滞对象的最优内模PID控制

王浩坤，尚群立
(杭州电子科技大学 自动化学院，浙江 杭州 310018)

摘要：针对使用传统PID参数整定方法难以获得最优性能的问题，介绍了一种基于内模控制的PID控制器设计方法，使用蚁群优化方法对其中的参数进行优化，使系统达到某一最优性能指标。另外介绍了一种高阶模型的降阶方法，该方法计算简单并具有较高的精度。最后同其他著名的整定方法进行了比较，结果显示该方法有较大的灵活性，在某一性能指标下可使系统获得最优或接近最优的性能。Matlab仿真研究表明了该方法是有效、可行的。
关键词：比例积分微分；内模控制；蚁群优化；模型降阶；一阶时滞对象
中图分类号：TP273文献标识码：A文章编号：1001-4551(2008)01-0014-04

An optimal PID controller design for FOPD process based on internal model control
WANG Haokun, SHANG Qunli
(College of Automation, Hangzhou Dianzi University, Hangzhou 310018, China)
Abstract: Considering the difficulties in the tuning of PID parameters to obtain a well performance by using conventional tuning formulas, a PID parameters tuning approach based on internal model control (IMC) was proposed. In order to obtain an optimal performance, ant colony optimization (ACO) method was used to optimize the parameter of the controller. In addition, a model reduction method was introduced, the method is easy to compute and have a good precision. Compare with some wellknown PID tuning formulas, it was observed that the proposed method has more flexibility and optimal performance can be obtained under special criteria. The effectiveness and feasibility of the proposed method are verified through Matlab simulation results.
Key words: proportionintegralderivative (PID); internal mode control (IMC); ant colony optimization (ACO); model reduction; FOPD
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