工控软件设计中高精度计时的实现

Realization of high precision timing in industrial controlling programming

通过精确测量高速电机的瞬时转速的例子 ,说明了在Windows2 0 0 0平台上设计工控软件时高精度计时的一种实现方法。该方法通过WinAPI函数访问计算机高速系统计数器实现 μs级计时 ,相对当前常用的几种其他方法来说 ,此方法具有精度更高、实现更方便、程序更简单的优点。最后 。

this article gives a detail describing about the realization of a high precision timing method on Windows2000 by the example in which we may measure the instantaneous revolution of an electric machine. In the end,this article discusses that performance counter value may unexpectedly leap forward and give the way of avoiding it.