基于智能数字锁相技术的光栅细分方法  

Grating Segmentation Method Based on Intelligent Digital Phase Locking Technique

作　　者：郭雨梅[1] 苏升[1] 

机构地区：[1]沈阳工业大学信息科学与工程学院,辽宁沈阳110870

出　　处：《仪表技术与传感器》2015年第1期104-107,共4页Instrument Technique and Sensor

基　　金：沈阳市科技计划资助项目(F13-316-1-57)

摘　　要：在高精度数字集成化光栅测控系统的研制过程中,光栅传感器输出信号的细分方法至关重要。为了在保证跟踪速度的前提下提高光栅传感器的细分精度,提出了基于智能数字锁相技术的光栅细分方法。研究了该方法中光栅跟踪速度与细分数的关系,所设计的智能K模计数器可根据不同的捕获过程来选择合适的K值,从而在保证输出信号稳定的情况下,缩短锁相时间,提高跟踪速度。利用FPGA设计并实现了该方法,通过仿真验证了其正确性,为数字集成化光栅测控系统的研制奠定了基础。The subdivision method of output signal of the grating sensor is very important in the development process of digital integrated grating measurement and control system with high precision. In order to improve the segmentation accuracy of grating sensor in the premise of ensuring the tracking speed,the grating segmentation method based on intelligent digital phase locking technique was put forward and the relationship between the fine fraction and grating tracking speed was studied. The designed intelligent K counter can choose suitable K values according to different capture processes,thus shortening the lock time and improving the tracking speed in the case of stable output signal. The algorithm was designed and implemented by FPGA and the correctness of the algorithm was verified by simulation,thus laying the foundation for the development of digital integrated grating measurement and control system.

关 键 词：锁相倍频 光栅传感器 FPGA 信号处理 

分 类 号：TH711[机械工程—测试计量技术及仪器]