DIMENSIONAL DESIGN THEORY AND METHODOLOGY OF 6-DOF SCISSOR PARALLEL MANIPULATOR  

作　　者：TangXiaoqiang LiTiemin WangJinsong 

机构地区：[1]DepartmentofPrecisionInstruments,TsinghuaUniversity,Beijing100084,China

出　　处：《Chinese Journal of Mechanical Engineering》2004年第1期6-10,共5页中国机械工程学报（英文版）

基　　金：This project is supported by National Natural Science Foundation of China(No.50305016);State High Technology Development Program of China(No.2002AA421180)

摘　　要：Parallel manipulators have many advantages over serial manipulators in termsof high load/weight ratio, velocity, stiffness and precision. A dimensional design theory andmethodology of six degrees of freedom scissor parallel manipulator (SPM) is investigated. The SPMkinematics inverse equation is given. Based on the formulation of the local dexterity and thedefinition about the indexes of workspace incircle radius, the effects of the design parameters onthe dexterity and workspace are discussed. Moreover the incircle radius change ratio about workspaceare defined and used as the evaluated indicator to analyze the effects of the design parameters onthe performances. A dimensional design theory that could satisfy the requirement of dexterity andworkspace is proposed. The dimensional design theory and methodology can be of help in the design,trajectory planning and control of parallel manipulator.Parallel manipulators have many advantages over serial manipulators in termsof high load/weight ratio, velocity, stiffness and precision. A dimensional design theory andmethodology of six degrees of freedom scissor parallel manipulator (SPM) is investigated. The SPMkinematics inverse equation is given. Based on the formulation of the local dexterity and thedefinition about the indexes of workspace incircle radius, the effects of the design parameters onthe dexterity and workspace are discussed. Moreover the incircle radius change ratio about workspaceare defined and used as the evaluated indicator to analyze the effects of the design parameters onthe performances. A dimensional design theory that could satisfy the requirement of dexterity andworkspace is proposed. The dimensional design theory and methodology can be of help in the design,trajectory planning and control of parallel manipulator.

关 键 词：DIMENSION Design theory Parallel manipulator 

分 类 号：TH112[机械工程—机械设计及理论]