Kinematic Analysis and Optimal Design of 3-PUS-PU Compliant Parallel Mechanism

被引：0
作者：
Zhou Y. [1 ,2 ]
Li S. [1 ,2 ]
Xu Q. [1 ,2 ]
Zhang F. [1 ,2 ]
机构：
[1] Parallel Robot and Mechatronic System Laboratory of Hebei Province, Yanshan University, Qinhuangdao
[2] School of Mechanical Engineering, Yanshan University, Qinhuangdao
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2022年 / 53卷 / 09期
关键词：
3-PUS-PU; compliant parallel mechanisms; optimal design; particle swarm algorithm; performance of the kinematics;
D O I：
10.6041/j.issn.1000-1298.2022.09.043
中图分类号：
学科分类号：
摘要：
The 3 PUS-PU compliant parallel mechanism with high precision and high stiffness was proposed. Its kinematic analysis and optimization design were carried out. According to the structure of the flexible hinges and the geometric relations of mechanisms, the motion principle of 3 – PUS-PU compliant parallel mechanism was described, and the motion characteristics of the mechanism were analyzed-The kinematics model of the mechanism was established by the closed-loop vector method, and the input-output relationship and velocity characteristics of the mechanism were analyzed. Then, the limit angle of flexure hinges was analyzed based on the theory of elasticity. According to constraint conditions and geometric parameters, the workspace of the mechanism was obtained by the numerical search method. According to the work requirements of the mechanism, the performances of positioning accuracy and compact were proposed. Then, the influence of structure parameters of the mechanism on the performances were analyzed. Finally, the particle swarm optimization algorithm was adopted to optimize the size parameters of the mechanism. Compared with the original mechanism, the optimal mechanism was improved by 25% and 81 % for positioning accuracy and compactness, respectively. The results showed that the optimal mechanism performance of the kinematics was good. It can provide guidance for the subsequent prototype development. © 2022 Chinese Society of Agricultural Machinery. All rights reserved.
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页码：417 / 424
页数：7
相关论文
共 26 条
[1]  
WANG Gengxiang, LIU Hongzhao, YUAN Daning, Force analysis of spatial 4-SPS/CU parallel mechanism [J], Transactions of the CSAE, 28, 22, pp. 30-38, (2012)
[2]  
WANG Gengxiang, YUAN Daning, LIU Hongzhao, Et al., Kinematics analysis of spatial 4-SPS/CU parallel mechanism [J], Transactions of the Chinese Society for Agricultural Machinery, 43, 3, pp. 207-212, (2012)
[3]  
VARALAKSHMI K V, SRINIVAS J., Optimized configurations of kinematically redundant planar parallel manipulator following a desired trajectory, Procedia Technology, 14, pp. 133-140, (2014)
[4]  
WEN S H, QIN G Q, ZHANG B W, Et al., The study of model predictive control algorithm based on the force/position control scheme of the 5-DOF redundant actuation parallel robot, Robotics and Autonomous Systems, 79, pp. 12-25, (2016)
[5]  
ZHANG Haiqiang, FANG Hairong, Performance analysis of a redundantly actuated parallel manipulator with suitable constraint branch [J], Journal of Beijing Jiaotong University, 42, 1, pp. 133-138, (2018)
[6]  
LIU Xiaofei, TANG Yanhua, LIU Xin, Et al., Dynamics performance optimization for redundantly actuated parallel manipulator with constraint branch [J], Transactions of the Chinese Society for Agricultural Machinery, 52, 8, pp. 378-385, (2021)
[7]  
YE Wei, HU Lihuan, XIA Dongxin, Et al., Performance analysis and optimization of redundantly actuated three translational parallel mechanism[J], Transactions of the Chinese Society for Agricultural Machinery, 52, 11, pp. 421-430, (2021)
[8]  
XU Y D, JIANG Z, JU Z J, Et al., Force analysis of the redundantly actuated parallel mechanism 2RPR + P considering different control methodologies [J], Robotics and Autonomous Systems, 1, pp. 1-11, (2021)
[9]  
WANG L T, LI J, ZHAO L., Kinematic analysis and speed control of 3 SPS-IS parallel mechanism for end actuator of segment erector, 12th International Conference on Intelligent Robotics and Applications, ICIRA, (2019)
[10]  
LIANG X H, TAKE DA Y., Transmission index of a class of parallel manipulators with 3-RS(SR) primary structures based on pressure angle and equivalent mechanism with 2-SS chains replacing RS chain [J], Mechanism and Machine Theory, 139, pp. 359-378, (2019)
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