曲柄
机制(生物学)
旋转副
巴(单位)
计算机科学
四连杆机构
方向(向量空间)
运动(物理)
算法
简单(哲学)
计算
控制理论(社会学)
数学优化
数学
人工智能
几何学
哲学
物理
控制(管理)
认识论
气象学
机器人
作者
Jianzhong Ding,Yang Dong,Xueao Liu,Chunjie Wang
标识
DOI:10.1177/09544062221104596
摘要
This paper presents a multi-objective optimization model for the motion synthesis of four-bar mechanisms considering the effects of revolute joint clearances. A geometric method is proposed to compute the maximum clearances-induced positioning and orientation errors. The proposed error modeling method is validated using a simple example, and the results reveal its advantages of high accuracy and fast computation compared with the widely used existing methods. A multi-objective optimization model is developed to design the four-bar mechanism with the best accuracy. The positioning and orientation errors are modeled separately and equally. Moreover, three constraints are included in the optimization to ensure that the synthesized mechanism is a compact crank-rocker or double-crank mechanism free from branch and order defects. A study case of synthesizing a four-bar mechanism passing through 6 motion points is investigated to illustrate the proposed method. Finally, conclusions and a brief discussion are given.
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