球面四杆函数生成机构优化设计  

Optimization design of the spherical four-bar function-generating mechanism

作　　者：郭丽红[1] 吴开霞[1] 庄爱平 GUO Li-hong;WU Kai-xia;ZHUANG Ai-ping(School of Intelligent Manufacturing,Jincheng College of Sichuan University,Chengdu 611731;Chengdu Falcon Aircraft Engineering Service Co.,Ltd.,Chengdu 610041)

机构地区：[1]四川大学锦城学院智能制造学院,四川成都611731 [2]成都富凯飞机工程服务有限公司,四川成都610041

出　　处：《机械设计》2021年第6期41-44,共4页Journal of Machine Design

摘　　要：为了提升连杆机构设计质量和机构运动性能,对球面四杆函数生成机构展开运动学分析,在考虑不确定因素影响下运用一次二阶矩法建立球面四杆函数生成机构运动精度可靠性模型,同时建立了以连杆机构函数输出运动误差的最大值、函数输出运动精度失效概率和函数输出误差均值与标准差平均值之和为目标函数的3种优化模型,并通过实例数值仿真对3种优化模型进行对比分析。In this article,the spherical four-bar function-generating mechanism is subject to the kinematic analysis,in order to improve its quality and kinematic performance. With the uncertain factors taken into account,the First Second-Order Moment method is adopted to set up the mechanism’s reliability model of kinematic accuracy. In addition,three optimization models are worked out,with the objective function defined as the following values: the maximum value of the function-output kinematic error,the failure probability of the function-output kinematic accuracy,as well as the sum of the mean value of the function-output error and the value of the function-output standard deviation. Then,the three optimization models are compared and analyzed through the examples of numerical simulation.

关 键 词：球面机构 可靠性分析 优化设计 

分 类 号：TH112.1[机械工程—机械设计及理论]