基于扰动跟踪的Smith预估器

杨金华 吴捷

doi:1000-565X(2004)05-0022-04

华南理工大学学报(自然科学版) >

2004 , Vol. 32 >Issue 5: 22 - 25

DOI: https://doi.org/1000-565X(2004)05-0022-04

基于扰动跟踪的Smith预估器

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华南理工大学电力学院广东广州510640

杨金华（1977－）男主要从事自适应、自组织控制的研究．

收稿日期: 2003-11-25

网络出版日期: 2015-09-08

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Smith Predictor Based on Disturbance Tracking

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College of Electric PowerSouth China Univ．of Tech．Guangzhou510640GuangdongChina

杨金华（1977－）男主要从事自适应、自组织控制的研究．

Received date: 2003-11-25

Online published: 2015-09-08

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摘要

在讨论了Smith 预估器优缺点的基础上提出了一种修正的Smith 预估器．该预估器引入闭环反馈控制结构简单且能跟踪扰动．对含有积分环节的对象进行了仿真．仿真结果表明模型匹配时具有同 Smith 预估器同样的效果；当模型不完全匹配时通过校正使得系统的工作更加稳定。

关键词： Smith 预估器; PI 控制; 模型匹配; 大滞后

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杨金华吴捷 . 基于扰动跟踪的Smith预估器[J]. 华南理工大学学报(自然科学版), 2004 , 32(5) : 22 -25 . DOI: 1000-565X(2004)05-0022-04

Abstract

The advantages and disadvantages of Smith predictors were discussedby means of which a modified Smith predictor was proposed．The closed-loop feedback control scheme was applied to the modified predictorthus making the predictor be of a simple structure and be capable of tracing the process disturbance．Processes with integral action were then simulated．The results indicate that the modified predictor is of the similar performance as conventional Smith pre-dictors when the models match welland is of a better stability than the conventional ones when the dismatching models were corrected．

Key words： Smith predictor; PI control; model matching; long time-delay

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