Position control for planar four-link underactuated manipulator with a passive third joint

被引:17
|
作者
Liu, Dong [1 ,2 ]
Lai, Xuzhi [1 ,2 ]
Wang, Yawu [1 ,2 ]
Wan, Xiongbo [1 ,2 ]
Wu, Min
机构
[1] China Univ Geosci, Sch Automat, Wuhan 430074, Hubei, Peoples R China
[2] Hubei Key Lab Adv Control & Intelligent Automat C, Wuhan 430074, Hubei, Peoples R China
基金
中国国家自然科学基金;
关键词
Planar underactuated manipulator; Nonholonomic system; Position control; Model reduction; Differential evolution algorithm;
D O I
10.1016/j.isatra.2018.11.030
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 presents a position control strategy based on the differential evolution (DE) algorithm for a planar four-link underactuated manipulator (PFUM) with a passive third joint, which is to move its end-point from any initial position to any target position. Based on the structural characteristic of the PFUM, a model reduction method is conceived to reduce the PFUM to a planar virtual three-link manipulator and a planar Acrobot in turn. Considering the existence of the angle constraint in the planar Acrobot, the DE algorithm is used to optimize and coordinate the control objective of each reduced system, and also to ensure the target angles of the planar Acrobot corresponding to the target position of the PFUM can be found. Simulations demonstrate the validity of the proposed control strategy. (C) 2018 ISA. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:46 / 54
页数:9
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