摘要
针对某新型转辙机中转辙机拉杆位移测量无有效测量手段的问题与磁栅标尺定量分析的困难,设计了一款磁栅位移传感器,利用分子电流假说,建立了磁栅标尺的三维数学模型,利用Ansoft Maxwell电磁仿真软件分析了横向安装误差对传感器所感应到的磁场强度的影响,基于离散傅里叶变换对传感器响应进行了分析与简化;所设计传感器磁栅标尺采用SIKO的5 mm间距磁栅,敏感元件由线性霍尔元件阵列组成,利用正余切细分法对响应信号进行电子细分,提高了传感器的测量精度与响应速度,其测量精度为±6μm。
Aiming at the lack of effective means to measure the pull rod displacement in pier rotating machine,a magnetic grid displacement sensor is designed.Based on the molecular current theory,a three-dimensional mathematical model of magnetic grid scale is established.Based on Ansoft Maxwell electromagnetic simulation software,the influence of lateral installation error on magnetic field intensity of sensor is analyzed.The sensor response is analyzed based on discrete Fourier transform.Sensor grid scale adopts SIKO 5 mm spacing grid,and the sensitive element is composed of linear Hall element.Based on the positive cotangent subdivision,the response signal is decomposed to improve the sensor response speed and accuracy,and the measurement accuracy is±6μm.
作者
周近杰
郭彦青
段志强
于腾飞
王超
Zhou Jinjie;Guo Yanqing;Duan Zhiqiang;Yu Tengfei;Wang Chao(School of Mechanical Engineering,North University of China,Shanxi Taiyuan,030051,China)
出处
《机械设计与制造工程》
2023年第1期7-12,共6页
Machine Design and Manufacturing Engineering
关键词
磁场强度
信号处理
磁栅传感器
正余切细分法
转辙机
magnetic field intensity
signal processing
magnetic grid sensor
positive cotangent subdivision
pier turning machine
