Axis intersection measurement of three-axis turntable with two crosshair targets  

作　　者：任顺清 马广程 王常虹 

机构地区：[1]Space Control and Inertial Technology Research Center Harbin Institute of Technology, Harbin 150001, China

出　　处：《Journal of Harbin Institute of Technology(New Series)》2005年第3期250-254,共5页哈尔滨工业大学学报（英文版）

摘　　要：In order to measure three-axis intersection error, two crosshair targets were fixed in the inner axis frame of a three-axis turntable. Also a theodolite was used to point its telescope to the targets and to measure the horizontal angles when three axes were on equi-spaced angle positions. The calculation equations of the axis intersection were deduced from the mounting position of the theodolite, positions of two targets, angular positions of three axes, and the measured horizontal angles with the theodolite. Finally, a practical measurement is carried out on a horizontal three-axis turntable and error analysis is conducted.In order to measure three-axis intersection error, two crosshair targets were fixed in the inner axis frame of a three-axis turntable. Also a theodolite was used to point its telescope to the targets and to measure the horizontal angles when three axes were on equi-spaced angle positions. The calculation equations of the axis intersection were deduced from the mounting position of the theodolite, positions of two targets, angular positions of three axes, and the measured horizontal angles with the theodolite. Finally, a practical measurement is carried out on a horizontal three-axis turntable and error analysis is conducted.

关 键 词：Axis intersection three-axis turntable THEODOLITE error separation technology homogeneous transformation 

分 类 号：TG5[金属学及工艺—金属切削加工及机床]