Fractional-order DOB-sliding mode control for a class of noncommensurate fractional-order systems with mismatched disturbances

被引：14
|
作者：
Wang, Jing [1 ]
Shao, Changfeng [1 ]
Chen, Xiaolu [1 ]
Chen, YangQuan [2 ]
机构：
[1] Beijing Univ Chem Technol, Coll Informat Sci & Technol, Beijing 100029, Peoples R China
[2] Univ Calif Merced, Sch Engn, Mechatron Embedded Syst & Automat Lab, Merced, CA USA
来源：
MATHEMATICAL METHODS IN THE APPLIED SCIENCES | 2021年 / 44卷 / 10期
基金：
中国国家自然科学基金;
关键词：
fractional-order disturbance observer; fractional-order sliding mode control; mismatched disturbance; noncommensurate fractional-order systems; OBSERVER; TIME; DESIGN;
D O I：
10.1002/mma.5850
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
This article proposes a novel fractional-order sliding mode control based on the disturbance observer for a class of noncommensurate fractional-order systems with mismatched disturbances. Firstly, the noncommensurate fractional-order system is decomposed into several subsystems with commensurate order. Then the fractional-order disturbance observers are designed independently to estimate the mismatched disturbances for each subsystems. Based on the designed disturbance observers, a uniform fractional-order sliding mode control is proposed. The proposed method can deal with the mismatched disturbances and has better control performance. The simulations on single-link flexible manipulator system demonstrate the effectiveness of the proposed method.
引用
收藏
页码：8228 / 8242
页数：15
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