新型角度检测装置及其检测方法研究

Research on novel angle detection device and itsdetection method

提出了一种新型磁性角度传感器的实现方法,对角度传感器的电路布局和机械结构进行了设计。采用了霍尔磁环组合采集初始电压信号,并通过电压信号转换、模/数转换以及数字差分处理实现了有效数据的采集。本文提出了基于三角波数值的细分技术,在一个旋转周期内,基于两组三角波原始数值的正负组合实现角度子区间的编码;并利用其中一组三角波数值实现任一子区间的角度细分,构建了角度传感器分辨率与模数转换器(ADC)分辨率的线性关系。三角波数值经取绝对值和取反等数据处理后,结合当前两组三角波原始数值正负情况,实现子区间的识别和小分区的编号计算,实时获取当前的绝对角度输出。分析结果表明:在选用10位ADC时,该角度位置检测技术能够实现12位分辨率的轴角位置输出。

A new type of magnetic angle sensor is proposed.Circuit layout and mechanical structure scheme of angle sensor are designed.Hall magnetic ring is used to collect the original voltage signal,and effective data acquisition is realized through voltage signal conversion,analog-to-digital conversion and digital differential processing.A new method of angle subdivision based on triangular wave is proposed.In one rotation period,the angle subdivision is realized by combining the positive and negative values of two groups of triangular wave,and the angle subdivision of any subinterval is realized by using one group of triangular wave values.The linear relationship between the resolution of angle sensor and the resolution of analog to digital converter(ADC)is constructed.After data processing of absolute value and reciprocal value,combined with the positive and negative original values of two groups of triangular waves,the recognition of sub-intervals and the numbering calculation of sub-zones are realized,and the current absolute angle output is obtained in real time.The analysis results show that the angular position detection technology can achieve the output of the angular position with a resolution of 12 bits,when 10 bit ADC is used.