摘要
基于伪刚体模型法,分析研究了平面柔顺机构的驱动特性问题。以平面柔顺四杆机构为研究对象,建立其伪刚体模型。通过对该模型的动力学分析,得到了一种柔顺机构驱动力矩计算的新方法。算式表明柔顺机构的驱动特性与机构中柔性铰链之间存在着内在关系。根据算例分析结果可知,通过改变柔性铰链的刚度以及各柔性铰链未变形时的初始位置能减小机构的最大驱动力矩。
Driving characteristics of planar compliant mechanisms were studied based on the pseudo -rigid-body model herein. A planar four-bar compliant mechanism was taken as an example to analyze, the pseudo-rigid-body model of this mechanism was developed at first. A new method for calculating the driving torque was then obtained based on the dynamic analysis of compliant mechanism, and it shows that the flexible hinges have impact on the driving characteristics of compliant mechanisms. The results of example indicate that the peak driving torque is minimized by modifying the stiffness and the unstrained positions of the flexure hinges.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2009年第2期127-130,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50875002)
北京市自然科学基金资助项目(3062004)
北京市属市管高等学校人才强教计划资助项目(PHR(IHLB))
北京市教委科技发展计划资助项目(KM200610005003)
关键词
柔顺机构
伪刚体模型
柔性铰链
驱动特性
compliant mechanism pseudo- rigid-body flexural hinge driving characteristics
