A novel computational method for loop Again and phase margins of TITO systems

被引：3
|
作者：
Nie, Zhuo-Yun [1 ,2 ,3 ]
Wu, Min [1 ,3 ]
Wang, Qing-Guo [2 ]
He, Yong [1 ,3 ]
机构：
[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 119260, Singapore
[3] Cent S Univ, Hunan Engn Lab Adv Control & Intelligent Automat, Changsha 410083, Hunan, Peoples R China
来源：
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS | 2013年 / 350卷 / 03期
基金：
美国国家科学基金会;
关键词：
MULTIVARIABLE FEEDBACK-SYSTEMS; PID CONTROLLERS; GAIN;
D O I：
10.1016/j.jfranklin.2012.12.011
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper addresses the problem of loop gain and phase margins of two-input two-output (TITO) systems. A new frequency domain approach is proposed to accurately compute the loop gain and phase margins for TITO systems. With the help of geometry analysis method, the stability boundaries are shown to be the intersection points of some constructed curves. The computational burden is reduced by restricting the frequency range estimated by the norm analysis. The gain and phase margins are determined in the stable region. The method is demonstrated by two examples. (C) 2012 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：503 / 520
页数：18
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