CPLD数字倍频原理在旋转机械振动信号采集中的应用

CPLD Digital Frequency Multiplying Principle in Rotating Machinery Vibration Signal Collection

在介绍旋转机械振动信号采集的意义和整周期采样实现方法的基础上,提出了采用数字倍频器加以实现的技术。分析了倍频电路的原理及各部分功能的实现,并通过在CPLD仿真验证了其正确性,使其可作为一个独立单元嵌入到整周期采样装置中。

This paper presents realizing technique of digital frequency multiplying device,on the basis of introducing the meaning of rotating machinery vibration signal collection and technique of the full period sampling.Principles of frequency multiplying circuit and various parts of the implementation function were analyzed.Through correct simulation in the CPLD,this design can be used as an independent module embedded into the full period sampling device.