西南交通大学学报2024，Vol.59Issue(6)：1314-1321,8.DOI:10.3969/j.issn.0258-2724.20220450
PCB型电磁感应式直线位移传感器短周期误差抑制方法
Short-Period Error Suppression Method of PCB-Based Inductive Linear Displacement Sensor
摘要
Abstract
In the linear displacement measurement,the printed circuit board(PCB)-based new inductive displacement sensors is easy to lead to short-period errors in manufacturing,assembly,and other process links because of its large pitch.Among the types of short-period errors caused,the first-order and fourth-order errors are the most common short-period errors in PCB-based inductive linear displacement sensors.Therefore,in order to reduce the first-order and fourth-order errors,the generation mechanism of these two kinds of errors was first studied from the output signals,and then an error self-correction method that did not depend on external reference was proposed.Firstly,the sources of short-period first-order and fourth-order errors and the functions of the two errors with the original sine(SIN)and cosine(COS)signals of the sensor were analyzed theoretically.Then,a short-period error function model based on the characteristics of the original SIN and COS signals of the sensor was established,and the corresponding parameters of the first-order and fourth-order errors in the error function model were calculated based on the measured data of the sensor prototype.Finally,the first-order and fourth-order error models were used for the error compensation of the sensor prototype.The results of prototype experiments show that the peak-to-peak value of the error after compensation is reduced from 51.6 μm to 36.2 μm.The short-period first-order error is reduced by about 64.5%,and the short-period fourth-order error is reduced by about 83.0%.关键词
传感器/直线位移/电磁感应/误差抑制/自校正Key words
sensor/linear displacement/induction/error suppression/self-correction分类
机械工程引用本文复制引用
汤其富,李咪,赵静,郭羊庭,彭松..PCB型电磁感应式直线位移传感器短周期误差抑制方法[J].西南交通大学学报,2024,59(6):1314-1321,8.基金项目
国家自然科学基金项目(51875069) （51875069）
重庆市自然科学基金项目(cstc2019jcyj-msxmX0718) （cstc2019jcyj-msxmX0718）
