Static Stiffness Analysis and Simulation of 6-PTRT Parallel Robot

被引：0
|
作者：
Leng, Delong [1 ]
Qu, Dongsheng [1 ]
Liu, Yanwu [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin, Peoples R China
来源：
2013 INTERNATIONAL CONFERENCE ON MACHINERY, MATERIALS SCIENCE AND ENERGY ENGINEERING | 2013年 / 318卷
关键词：
6-PTRT parallel robot; Static stiffness; Influence coefficient; Jacobian matrix;
D O I：
10.4028/www.scientific.net/AMM.318.33
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
To reveal the static stiffness behavior of a 6-PTRT parallel robot and find out its change rule in order to provide the reasonable parameters for the structural design, the stiffness characteristics of this parallel mechanism was studied. Based on the influence coefficient method, a static stiffness model for 6-PTRT parallel robot was established. The proposed model considered not only the axis stiffness of actuator but also the stiffness of passive joints, and the change of Jacobian matrix and first-order influence coefficient brought about by tiny change of the parallel robot mechanism's configuration under external wrench. The static stiffness matrix of parallel robot in initial position and its stiffness distribution rules for a certain workspace were given by numerical calculation and finite element method, which comparatively verify the exactness of stiffness model.
引用
收藏
页码：33 / 38
页数：6
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