PI-Fuzzy controllers for integral plants to ensure robust stability

被引：71
作者：
Precup, Radu-Emil [1 ]
Preitl, Stefan [1 ]
机构：
[1] Politech Univ Timisoara, Fac Automat & Comp, Dept Automat & Appl Informat, RO-300223 Timisoara, Romania
来源：
INFORMATION SCIENCES | 2007年 / 177卷 / 20期
关键词：
fuzzy control; PI and PID controllers; servo systems; extended symmetrical optimum method; robust stability;
D O I：
10.1016/j.ins.2007.05.005
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
New PI-fuzzy controllers comprising Takagi-Sugeno and Mamdani fuzzy systems to control a class of integral plants specific to servo systems are proposed in this paper. Linear PI controllers are designed in the first phase. They are tuned using the Extended Symmetrical Optimum method to ensure the desired overshoot and settling time with respect to step setpoint modifications and three types of load disturbance inputs. This type of PI controller design guarantees robust stability of the closed-loop system in response to parametric variations in a controlled plant. Following this, based on the results from the linear case and the modal equivalence principle, an original development method for PI-fuzzy controllers is proposed. Some experimental results are included to illustrate the effectiveness of the design process. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：4410 / 4429
页数：20
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