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中文摘要：
在工程应用中,振动加速度信号因受噪音、趋势项误差等因素的干扰,其积分后的数据精度会受到严重影响,制约该类传感器的使用。为了克服该问题,本文分别介绍了修正后的时域积分法和频域积分法。且基于LabVIEW虚拟仪器平台,分别编写了两种算法的仿真程序,定量对比了两种算法积分精度。最终以旋转机械振动故障诊断实验台为对象,实时采集振动加速度信号并进行积分运算。结果表明,修正后的频域积分法结果与实际振动速度、位移信号更为接近。
英文摘要：
In the engineering field, the vibration acceleration signal is usually affected by many factors such as noise and trend-term error, and the precision of its integral results is seriously affected. In order to overcome this problem, a modified time-domain method and a frequency-domain integration method have been introduced in this paper. Based on the LabVIEW platform, programs were written for each of these two methods, and simulation and experiments were conducted to quantitatively compare their integral precision. Finally, the vibration acceleration signal was collected and the integral operation performed using the rotating machinery vibration fault diagnosis experiment platform. The results showed that the integration result of the modified frequency domain integration method was more consistent with the actual vibration velocity and displacement signals.
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