摘要
为了提高时栅位移传感器的动态性以及测量精度,设计了一种基于数字内插法的时栅信号处理系统;利用粗计数法和数字内插法将时栅信号分成粗测和细测两部分分别进行测量,降低了对插补脉冲频率的要求,提高了测量精度;同时采用SOPC技术实现了系统电路的高度集成,并利用自定义指令提高了数据处理速度;实验表明,采用该系统后,时栅在40 kHz激励情况下误差为±1.2″,实现了时栅信号的高精度测量。
In order to improve the time grating displacement sensor signal processing system stability and processing speed, a signal pro- cessing system of time grating based on digital interpolation method is designed. Signal is measured by crude counting method and digital in- terpolation in two parts; coarse and fine measurements, reduced interpolation pulse frequency. While adopting the SOPC technology to a- chieve a highly integrated system circuit, and the speed of data processing is improved by adopted custom instruction. It demonstrated that the error is ±1.2＂, when the time grating worked under the 40 kHz incentive. High precision measurement of grating signals is realized.
出处
《计算机测量与控制》
北大核心
2014年第2期507-509,共3页
Computer Measurement &Control
基金
重庆市教委科学技术研究项目(KJ120808)
重庆理工大学研究生创新基金项目(YCX2012312
YCX2012301)
关键词
时栅
信号处理
数字内插法
集成
自定义指令
time grating
signal processing
digital interpolation
integration
custom instruction
