摘要
针对复杂连杆机构因复杂的构成方式和多样性的原动力输入方式而存在的运动奇异性复杂问题,利用连杆机构运动瞬心以及连杆机构的特点,提出了运用等效四连杆机构来分析和解释单自由度复杂平面连杆机构奇异性问题的方法。该方法所采用的等效四杆机构死点时的几何特性还可用来分析更复杂单自由度平面连杆机构如双蝶形八连杆机构的奇异性问题。
The singularity of complex planar linkages was very difficult to find because they consisted of multiple links and more complex loops and input-related.Using the concept of instance center and the characteristics of planar linkages,the concept and method of equivalent four-bar linkages for the singularity analysis of single-DOF complex planar linkages were proposed.The geometric characteristics were employed when the equivalent linkage was at dead point positions.The proposed method is geometry-based and may be applied to the singularity analysis of more complex linkages such as the double butterfly linkages.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2018年第1期36-40,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51405140)
湖北省自然科学基金资助重点项目(2015CFA112)
湖北省教育厅优秀中青年科技创新团队资助项目(T201505)
关键词
奇异性
等效四杆机构
瞬心
复杂平面机构
singularity
equivalent four-bar linkage
instant center
complex planar linkage
