摘要
由于位移传感器自身的线性度问题，在现场使用过程中测量值与真实值之间必然会存在一定的误差，位移传感器的现场标定就必不可少。针对中海油油品l。汽车装车台液压同步顶升控制系统提出了一种位移传感器测量值示值误差标定方法，本方法以位移传感器的绝对误差为标定对象，通过调整A／D转换的偏移与增益来使示值拟合实际值，最后用最小二乘法来求其拟合直线，通过比较其相关系数和绝对误差来确定最后一组的偏移和增益值。
In the course of field measurement, there must be a certain error between the measured value and the true value, so the field calibration of the displacement sensor is essential since the linearity problems of the displacement sensor. A method of measured value indication error calibration for displacement sensor is proposed for hydraulic synchronous lifting control system of CNOOC oil 1 car loading. ment sensor is taken as calibration object, and indicating value can fit true gain of the A/D converter. Finally, the fitting line can be gotten by the least offset and gain value is determined by comDarin~ the correlation coefficient The absolute error of the displace value by adjusting the offset and square method, and the final set of and the absolute error.
出处
《测控技术》
CSCD
北大核心
2013年第1期11-13,共3页
Measurement & Control Technology
关键词
位移传感器
标定
最小二乘法
相关系数
displacement sensor
calibration
least square method
correlation coefficient
