Cascade Fractional-Order PI Control of a Linear Positioning System

被引:7
|
作者
Lino, Paolo [1 ]
Malone, Guido [1 ]
机构
[1] Polytech Univ Bari, Dept Elect & Informat Engn, Bari, Italy
来源
IFAC PAPERSONLINE | 2018年 / 51卷 / 04期
基金
欧盟地平线“2020”;
关键词
Fractional systems; infinite-dimensional systems; linear systems; fractional-order PI control; cascade control; tuning rules; regulation; robust control; frequency response;
D O I
10.1016/j.ifacol.2018.06.154
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 proposes a method for designing robust fractional-order proportional integral (FOPI) controllers to be employed in a cascade control system. The FOPI controllers are employed for controlling two nested loops. The design is based on performance and robustness specifications in the frequency domain. Taking inspiration from well-known tuning rules, the open-loop frequency response in the two nested loops is shaped around the gain crossover frequency to obtain a nearly flat phase diagram, then a nearly constant phase margin. The method is tested to control the speed and position of a linearly sliding motor. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
引用
收藏
页码:557 / 562
页数:6
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