直线运动机构三维角误差同步测量方法研究  

Study on synchronous measurement method of three-dimensional angle errors for linear motion mechanism

作　　者：陈诚[1] 张宏儒[1] 陈少轩 刘冰[1] 张凯 Chen Cheng;Zhang Hongru;Chen Shaoxuan;Liu Bing;Zhang Kai(School of Mechanical Engineering,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]天津商业大学机械工程学院

出　　处：《仪器仪表学报》2019年第10期145-151,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(51805371);天津市自然科学基金(18JCQNJC75400)项目资助

摘　　要：基于标准阶梯量块参数测量结果,提出了一种三维角度(偏摆、滚转、俯仰)同步在线测量方法,用于直线运动系统运动角误差的快速测量。该系统使用线激光传感器实现阶梯量块参数的实时采集,建立阶梯量块各参数与三维角度变化的数学模型。结合标定后的精密转台,完成系统测量稳定性及重复性的验证,将测量值与理论模型比较,确定±30°范围内的测量误差不超过1%。采用实验与软件计算相结合的方法完成角度测量分辨力的确定,结果显示标定后角度分辨率为0.001°。最后,利用本系统完成三维移动平台Z轴3项运动角误差的同步测量,测量结果验证了本系统具有简单、实用及高效的特点。A synchronous on line precision detection method for three-dimensional angles(yaw, roll, pitch) is proposed in this study based on the measurement results of standard step-gauge block parameters, which is employed for the fast detection of motion angle errors in linear motion system. The system uses a line laser sensor to achieve the real time acquisition of the step-gauge block parameters. And the mathematical model of the step-gauge block parameters and its three-dimensional angles is established. The system measurement stability and repeatability are verified with the calibrated precision turntable. The measured values are compared with the theoretical values, it is determined that within the measurement range of ±30°, the measurement error is less than 1%. The experiment and software calculation combined method was adopted to determine the angle measurement resolution, the result shows that after calibration the angle resolution is 0.001°. Finally, the proposed system was used to implement the simultaneous measurement of the three motion angle errors of the z-axis in a three-dimensional moving platform, the measurement result verifies that the proposed system possesses the characteristics of simplicity, practicability and high efficiency.

关 键 词：三维角度 运动角误差 线激光传感器 阶梯量块 

分 类 号：TN29[电子电信—物理电子学]