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相位信息在旋转机械的振动监测与故障诊断中起着重要的作用。为了获取多路信号正确的相位信息 ,必须采取同时刻采样保持。介绍了一种能够实现多路信号同时刻采样保持的并行采样方法 ,给出了硬件连接电路 ,并就两种不同的软件结构和编程思想讨论了门控信号对于提高采样频率上限的影响。
Phase information plays an important role in the vibration monitoring and fault diagnosis of rotating machinery. In order to obtain the correct phase information of multi-channel signal, we must take the same time sample and hold. A parallel sampling method that can sample and hold multiple signals simultaneously at the same time is introduced. A hardware connection circuit is given. The effect of gating signal on the upper limit of sampling frequency is discussed based on two different software architectures and programming ideas.