用加速度传感器测量振动位移的方法

Method of Vibration Displacement Measured with Acceleration Sensor

介绍了一种用加速度传感器测量振动位移信号的方法。该方法采用频谱转换法,首先将加速度谱转换成位移谱,再计算出位移谱中每个频率分量对应的幅值、圆频率和初相角,最后对各位移分量进行叠加得到振动位移的时间历程。验证试验结果表明该方法可行,精度可满足工程实践的需要。

Method of vibration displacement measured with acceleration sensor is introduced. Based on frequency-spectrum-transformation, this algorithm first changes acceleration spectrum into displacement spectrum, then calculates its amplitude, angular frequency and initial angle related to every displacement spectrum, finally sums up all the displacement components and forms the time course of the measured vibration. Verifying test results show that the algorithm is feasible and its precision meets the needs of engineering practices.