摘要
为对机械传动系统的运动精度进行合理分配,结合元动作理论,提出了一种机械传动系统运动精度优化分配新方法。首先利用“功能运动动作”结构化分解树对机械系统进行结构化分解,得到基本的元动作和元动作链;然后以元动作链为研究对象,分析运动精度形成机理,建立运动误差传递模型;考虑成本因素和运动误差灵敏度因素,建立了成本函数和鲁棒性函数。在此基础上建立了元动作链运动精度优化分配模型,得到了元动作运动误差。工程实例证明了该方法的有效性。
In order to distribute the kinematic accuracy of mechanical transmission system reasonably,a new method for optimal distribution of kinematic accuracy of mechanical transmission system was proposed with the meta-action theory.Firstly,the“function-kinematic-action”structural decomposition tree was used to decompose the mechanical system,and then the basic meta-action and meta-action chain were obtained.Secondly,taking the meta-action chain as research object,the formation mechanism of kinematic accuracy was analyzed,and the kinematic error transfer model was established.Considering cost factors and sensitivity factor of kinematic errors,cost function and robustness function were established.Then the optimal distribution model of the kinematic accuracy of the meta-action chain was established,and the kinematic errors of the meta-action were obtained.An engineering example proved the effectiveness of the method.
作者
李健
冉琰
张根保
王勇勤
LI Jian;RAN Yan;ZHANG Genbao;WANG Yongqin(College of Mechanical and Vehicle Engineering,Chongqing University,Chongqing,400044)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2022年第9期1034-1043,共10页
China Mechanical Engineering
基金
国家自然科学基金(51835001)。
关键词
机械传动系统
元动作
运动精度
误差模型
精度分配
mechanical transmission system
meta-action
kinematic accuracy
error model
accuracy distribution
