平面连杆机构多叉树表示方法与运动分析  

Multi-branch Tree Expression and Kinematic Analysis of Planar Linkage Mechanism

作　　者：罗贤海[1] 翁海珊[1] 

机构地区：[1]北京科技大学机械工程学院

出　　处：《农业机械学报》2008年第5期137-141,共5页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：提出用多叉树表达平面连杆机构组成的方法,将杆组的位置分析程序作为树的节点运算函数,对树结构实施后序遍历运算,形成平面连杆机构运动分析程序的有序集合,通过对该程序集合的顺序调用实现了机构运动自动分析。避免了在机构运动分析时进行复杂的杆组识别和运动路线生成;将两棵树的节点进行交叉或将树的节点进行变异,能方便派生出新的机构,从而为机构构型设计过程中进行运动学定量分析提供了一种新方法,运动分析算例证明了该方法的有效性。A method was proposed to express a planar linkage structure by multi-branch tree data. The analysis-program of mechanism position is regarded as the function of nodes calculation. An ordered set of kinematic numerical analysis program of planar linkage mechanism is built by postorder-traversal operation of the tree. It can realize automatic kinematic analysis of the mechanism by calling the set orderly. This method avoids the discernment of Assur groups and motion-routes creation. The new trees can be derived conveniently by crossing the nodes of two known trees or mutating the nodes of a known tree. Accordingly, it provides a convenient method for configuration creative design and kinematic analysis of a planar linkage. Finally, the kinematic analysis demonstration proved that the method was effective.

关 键 词：平面机构 平面连杆机构 多叉树 运动学分析 

分 类 号：TH112.1[机械工程—机械设计及理论]