基于解析法的RSSR机构运动精度及可靠性分析  

Kinematic Accuracy and Reliability Analysis of RSSR Mechanism Based on Analytic Method

作　　者：左传 陈晓航[1] 

机构地区：[1]武汉商学院机电工程与汽车服务学院,湖北武汉430056

出　　处：《机械研究与应用》2016年第4期60-63,共4页Mechanical Research & Application

基　　金：武汉商学院2016年度科研项目"基于Adams&Matlab联合仿真的RSSR机构应用研究"

摘　　要：以应用广泛的空间RSSR机构为例,利用解析法构建机构的运动模型,对输入特性和输出特性运动学方程进行了探讨,建立了函数关系表达式。将尺寸误差、运动副间隙误差及磨损误差视作服从正态分布的基础上,用有效长度代替实际杆长,在"有效长度模型"的理论基础上进一步推广至空间球面副连续接触有效长度理论,进行数学模型建立的运动精度及可靠性对比分析。通过参数化建模分析运动情况,反映运动精度影响量的关系,为空间机构评估提供参考,具有一定的应用价值。Seting the extensively used spatial RSSR mechanism as an example, the kinematic model was established by the an-alytical method, the characteristics of input and output characteristics of the kinematic equations were discussed, and the func-tion relational expression is established. On the basis that the dimension error, clearance error of kinematic pair and wear errorare regarded as obedience to the normal distribution, the effective length takes the place of the actual rod length, the motionprecision of mathematical model and reliability comparison analysis are conducted from the theory of ＇effective length model＇ tothe further promotion space spherical pair continuous contact effective length theory. Through parametric modeling motion anal-ysis, relationship between the motion accuracy and the amount is reflected. The construction evaluation provides reference andhas certain application value.

关 键 词：解析法 RSSR机构 运动可靠性 

分 类 号：TH112[机械工程—机械设计及理论]