带有预定时标平面四杆刚体导引机构的优化尺度综合  

OPTIMAL DIMENSION SYNTHESIS OF PLANAR LINKAGES FOR RIGID-BODY GUIDANCE WITH PRESCIBED TIMING

作　　者：吴鑫[1] 曹惟庆[2] 

机构地区：[1]洛阳工学院机械设计工程系,洛阳471039 [2]西安理工大学

出　　处：《机械工程学报》2001年第12期34-36,41,共4页Journal of Mechanical Engineering

基　　金：河南省自然科学基金资助项目。

摘　　要：研究了利用四杆机构基本尺寸型连杆转角函数的谐波特征参数，进行带有预定时标刚体导引　机构优化尺度综合的方法。首先在已建立的连杆转角函数谐波特征参数的数据库中，通过模　糊识别方法，识别出能够近似实现刚体导引的机构基本尺寸型；为了提高刚体导引机构尺度　综合的精度，以模糊识别的基本尺寸型作为优化的初始值，通过优化确定机构的最优基本尺　寸型；然后用理论计算方法确定机构的实际尺寸、连杆上标线的位置及机构安装尺寸参数。　最后给出了综合算例。： The method of optimal dimension synthesis of planar 4-bar linkages for rigid-body guidance with prescribed timing (in short PT) by using harmonic characteristic parameters of the coupler's rotation-angle function is developed. A harmonic component's database of the coupler's rotation-angle function for linkage's dimensional types is established firstly. According to the relationship between position function of rigid-body guidance with PT and coupler's rotation-angle function of 4-bar linkage, it is possible to choose some linkage's dimensional types from the database to realize rigid-body guidance with PT by using fuzzy identification method quickly, and to approximately achieve “infinite positions' of dimensional synthesis for rigid-body guidance. For making further improvement on the precision of dimension synthesis of planer 4-bar linkages for rigid-body guidance, taking linkage's dimension type as initial numbers from the database with fuzzy identification method, the optimal dimension types are obtained. The real dimension of linkage, coupler's point position and installing dimensions of the linkage can be computed in the last.

关 键 词：预定时标 刚体导引机构 尺度综合 优化 机构综合 平面四杆机构 

分 类 号：TH112.1[机械工程—机械设计及理论] TH122