传感技术学报2017，Vol.30Issue(2)：211-217,7.DOI:10.3969/j.issn.1004-1699.2017.02.008
一种基于电磁感应原理的角位移参数测量方法
A Measurement Method for Angular Displacement ParameterBased on the Electromagnetic Induction Principle
武丹 1李剑 1韩焱1
作者信息
- 1. 中北大学信息探测与处理技术研究所山西省重点实验室,太原 030051
- 折叠
摘要
Abstract
Aiming at the measurement requirements with an extremely high dynamic range and high precision for angular displacement parameter in the research field of conventional ammunition and projectile at present,this paper brings up a method for measuring angular displacement parameter based on the electromagnetic induction principle,and designs a corresponding angular displacement sensor as well.Induction coil is employed to acquire the information of projectile moving across geomagnetic field within a large dynamic range of rotational speed.Self-adaptive closed-loop frequency tracking measurement algorithm,which combines edge detection with pulse counting,is presented to measure the real-time information of angular displacement parameter in the process of the rotation of projectile.Accumulative error is eliminated by using the way of periodically pulse clear.The experimental results of semi-physical simulation and physical simulation demonstrate that the designed sensor not only can measure angular displacement within an extremely high dynamic range,broaden measurement range from 600 °/s to 36 000 °/s,but also can completely eliminate accumulative error during the measurement.The measurement error is less than 0.220% with the maximum accumulative error of lower than 0.2 °/s.Thereby realizing real-time measurement with high precision for angular displacement parameter of ammunition and projectile.The proposed method has definite value to engineering application in the fields of attitude determination and geomagnetic navigation,etc.关键词
角位移/自适应闭环频率跟踪测量/电磁感应/FPGAKey words
angular displacement/self-adaptive closed-loop frequency tracking measurement/electromagnetic induction/FPGA分类
信息技术与安全科学引用本文复制引用
武丹,李剑,韩焱..一种基于电磁感应原理的角位移参数测量方法[J].传感技术学报,2017,30(2):211-217,7.
