目前广泛使用的冲击加速度计校准技术有以下两种:(1)假定其幅值为线性,在几个分离频率上作正弦激励;(2)在仅测量加速度计峰值响应下作冲击激励。这两种时间域技术有较大的缺点。正弦校准费时间,花钱多,并且在校准过程中加速度计受到的冲击加速度值不高。峰值响应法给不出与频率有关的数据,只能给出单一的灵敏度值。一种应用傅里叶变换技术的方法消除了这些缺点。美 Currently widely used impact accelerometer calibration techniques are the following two: (1) Assuming a linear amplitude, sinusoidal excitation at several discrete frequencies; (2) Impact excitation in the mere measurement of accelerometer peak response. These two time-domain techniques have major drawbacks. Sine calibration time, spend more, and in the calibration process accelerometer impact acceleration value is not high. The peak response method gives no data related to the frequency and gives only a single sensitivity value. A method that uses Fourier transform eliminates these drawbacks. nice