基于频域的机械设备状态信息在线交流采样检测技术

On-line AC Sampling of the State-information of Mechanical Equipment in Frequency Domain

交流采样在一类旋转机械设备的状态信息监测过程应用广泛,它的算法和方法很多,但是频率参数总是直接或间接地对其它系统参数的准确度等造成很大影响,重点阐述了硬件测频法和软件测频法,前者要综合考虑硬件电路和测试方法的软件实现,后者则是运用某种信号数值算法处理技巧来进行频率的实时监测;所介绍方法实用有效,并在结论中试图探讨交流采样在其它工业领域的结合应用。

AC Sampling has been widely adopted when some status messages of one kind of rotating machine needs to be on-line detected, the arithmetics and methods of AC Sampling are numerous. But frequency always affects the precision or veracity of others system parameters deeply in the direct or indirect form.. This paper expounds the methods of frequency measurement based on hardware and on software, the former needs us to deliberate the hardware circuits and the realization of testing-methods with software synthetically, the latter is using one kind of signal-arithmetic＇s technique to measure the real-time frequency： The methods specified are applied and effective , AC Sampling may be considered into other industry fields associatively in the conclusion.