传感技术学报Issue(12)：1800-1804,5.DOI:10.3969/j.issn.1004-1699.2015.12.012
基于锁相环跟踪算法的高精度轴角-数字变换系统研究
Research on High-Accuracy Resolver-to-Digital Conversion System Based on PLL Tracking Algorithm
摘要
Abstract
This paper proposes an all-digital resolver-to-digital conversion(RDC)system using phase-locked loop (PLL)tracking algorithm to solve the problems of complex peripheral circuit and high cost for conventional high-pre⁃cision integrated RDC system. Firstly,excitation signal is obtained from PWM module of TMS320F2812. Secondly, the resolver outputs differential sine and cosine signals according to the excitation signal,the differential sine and cosine signals are sampled by a high-precision peripheral AD7606 independent module. Then the rotor angle is esti⁃mated with the PLL tracking algorithm based on TMS320F2812. The proposed RDC system is applied to a servo syn⁃chronous motor installing the resolver with one pair of poles,the electrical error of the resolver is ± 10′,and experi⁃ments are carried out. The research results show that the RDC system has the features with simple hardware struc⁃ture and low cost,the angle error is less than 10.66′,and high-precision resolver-to-digital conversion is achieved.关键词
旋转变压器/全数字轴角-数字变换/锁相环跟踪算法/伺服系统Key words
resolver/all-digital resolver-to-digital conversion/PLL tracking algorithm/servo control system分类
信息技术与安全科学引用本文复制引用
孙俊缔,邓辉,曹广忠..基于锁相环跟踪算法的高精度轴角-数字变换系统研究[J].传感技术学报,2015,(12):1800-1804,5.基金项目
国家自然科学基金项目（51275312）；深圳市科技计划项目（JSGG20141015153303491）；深圳市南山区技术研发和创意设计项目 （）
