关节式坐标测量机虚拟样机建立及采样点推广算法  

Establishment of virtual prototype of ACMM and algorithm of spreading sampling points

作　　者：胡毅[1] 万侃然 张宏伟[1] 龚阳波 

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2016年第10期1327-1330,共4页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(J2014AKZR0032)

摘　　要：为了单独分析关节式坐标测量机由圆编码器误差引起的测量误差,排除包括由杆件长度、杆件偏角及环境温度等因素所引起的误差,文章运用虚拟样机技术建立了关节式坐标测量机的虚拟样机模型,并将其与D-H方法建立的测量模型进行了比较验证,结果表明该虚拟样机成功地排除了绝大多数误差源,使得单独分析由圆编码器误差引起的测量空间误差分布成为可能。同时为了解决在空间采集大量均匀点的工作量大及复杂度高的问题,该文提出了一种将采集的一个面上的点推广为整个测量空间的大量点的算法,为下一步分析空间误差分布奠定了基础。Virtual prototype of articulated coordinate measuring machine（ACMM） is established by applying the virtual prototyping technology in order to separately analyze the measurement error genera- ted by circle optical grating encoder error and remove the errors caused by lever length, lever angle and ambient temperature. The virtual prototype of ACMM is compared with the measurement model built by the D-H method to verify the correctness of it. The results show that the virtual prototype e- liminates most of the error sources so that the distribution of the measurement error in whole space generated by circle optical grating encoder error can be separately analyzed. And an algorithm to collect lots of points in the space by collecting points in a plane is proposed in order to solve the large workload and high complexity of collecting a large number of uniform points in the space, thus laying the foundation of the further research on the measurement error in the whole space.

关 键 词：关节式坐标测量机 虚拟样机模型 误差源 采样点推广算法 

分 类 号：TH721[机械工程—仪器科学与技术]