通过建立平面3-RRR型全柔顺并联机构"伪刚体模型",采用微动近似算法得到输入和输出之间的位移雅可比矩阵,研究其微动情况下输入与输出之间位移矢量微分映射关系,并进行数值验证,利用ANSYS软件对其进行仿真,为此类平面并联机构及具有多输入多输出特性的空间并联机构微分运动分析提供理论参考依据。
By establishing a pseudo--rigid--body model of the planar 3--RRR type fully compliant parallel mechanism, and using micro approximation algorithm, the displacement jacobian matrix between the input and output is got, the displacement vector differential mapping relation between input and output under the micro motion case is researched, and the numerical validation is carried out , the simulation of it is conducted with ANSYS software, the theoretical reference basis for differential motion analysis of this kind of planar parallel mechanism and spatial parallel mechanism with multiple input and multiple output characteristics is provided.