基于平面电感角位置传感器的双同步参考系锁相环  

Double synchronous reference frame PLL based on a planar inductive angular position sensor

作　　者：徐云鹏[1] 薛雅丽[1] 武玉衡 董昊[1] 叶永强[1] Xu Yunpeng Xue Yali Wu Yuheng Dong Hao Ye Yongqiang(College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)

机构地区：[1]南京航空航天大学自动化学院,南京211106

出　　处：《仪器仪表学报》2017年第2期408-415,共8页Chinese Journal of Scientific Instrument

基　　金：江苏省"青蓝工程"(2016);江苏省"六大人才高峰"高层次人才项目(2016-XNY-030)项目资助

摘　　要：基于近几年新兴的低成本、高精度且适应恶劣环境的平面式电感角位置传感器,针对其输出信号进行角位置和角速度的解码研究。平面式电感角位置传感器输出信号需要经过解调得到正弦、余弦两路信号。通常这两路信号幅值不相等且相位相差不是90°(两路信号失衡)。传统的解码方法同步参考系锁相环只能从平衡的正弦、余弦信号中获得正确的角位置和角速度,而无法在信号失衡的情况下正常工作。本文提出双同步参考系锁相环,该方法能在信号失衡的情况下获得正确的角位置和角速度。仿真和实验工作均验证了双同步参考系锁相环解码方法的有效性。The planar inductive angular position sensor is popular in recent years for its low cost, high precision, and being well applicable in extreme environments. The decoding of the sensor＇ s output is focused to acquire angular position and velocity of objects. The sensor output signals need to be transformed into two signals： the sine and cosine signals by the demodulation module. Generally, the sine and cosine signals are unbalanced, i. e. , they are not in the same amplitude and ninety degrees phase difference. The traditional decoding method synchronizes reference frame phase-locked loop （SRF-PLL） can only be capable of acquiring correct angular position and velocity from balanced sine and cosine signals, which can not operate under unbalanced condition. In this work, a decoding method is proposed, termed double synchronous reference frame phase-locked loop （DSRF-PLL） , to acquire correct angular position and velocity under the unbalanced condition. Effectiveness of DSRF-PLL decoding method is verified by simulation and experimental results.

关 键 词：平面式电感传感器 角位置 角速度 双同步参考系锁相环 数字信号处理 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TH862[自动化与计算机技术—控制科学与工程]