摘要
介绍了零磁通霍尔电流传感器的原理及驱动系统。针对霍尔传感器在应用中易受周围环境干扰,使得信号中存在噪声等问题,分析和研究了一种基于小波变换的霍尔传感器信号去噪方法。通过选择小波基函数、阈值函数来抑制小波分解系数中的低频分量,同时保留高频分量,然后经过小波重构,实现了去噪处理。通过仿真试验,证明该方法能有效去除噪声信号。
This paper introduces the principle and drive system of a zero-flux Hall current sensor.In view of the fact that the Hall sensor is susceptible to interference from the surrounding environment in the application,which makes the signal noise and other problems,this paper analyzes and studies a method of Hall sensor signal denoising based on wavelet transform.The wavelet basis function and threshold function are selected to suppress the low-frequency components in the wavelet decomposition coefficients,while retaining the high-frequency components,and then through wavelet reconstruction,the de-noising processing is realized.The simulation test proves that the method can effectively remove the noise signal.
出处
《工业控制计算机》
2021年第7期146-147,163,共3页
Industrial Control Computer
基金
国家磁约束核聚变能发展专项(2014GB105000)。
关键词
霍尔零磁通电流传感器
小波变换
小波去噪
阈值函数
小波重构
Hall zero flux current sensor
wavelet transform
wavelet denoising
threshold function
wavelet reconstruction
