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METHOD FOR CALIBRATING PHASE-FREQUENCY CHARACTERISTIC OF LOW FREQUENCE ACCELEROMETER BASED ON TIME-SPATIAL SYNCHONIZATION
METHOD FOR CALIBRATING PHASE-FREQUENCY CHARACTERISTIC OF LOW FREQUENCE ACCELEROMETER BASED ON TIME-SPATIAL SYNCHONIZATION
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机译：基于时间空间同步的低频加速度计校准相位频率特性的方法
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摘要
A method for calibrating phase-frequency characteristics of low frequency accelerometer based on time-spatial synchronization, comprises: measuring excitation displacement of the low frequency accelerometer to realize excitation acceleration measurement of the low frequency accelerometer; realizing alignment of the excitation acceleration signal of the low frequency accelerometer with output voltage signal of the low frequency accelerometer in the spatial domain based on TSS technology, fitting the excitation acceleration signal and the output voltage signal respectively by SAM, and calculating phase φF of the excitation acceleration signal at a zero position of horizontal long-stroke shaker and phase φZ of the output voltage signal at the time when a zero encoder on the shaker outputs pulse; and calculating the sensitivity phase of the low frequency accelerometer with φZ and φF, and determining phase-frequency characteristics of the low frequency accelerometer by calibrating the sensitivity phases at different frequencies.
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机译：一种基于时间空间同步校准低频加速度计相位频率特性的方法，包括：测量低频加速度计的激励位移，实现低频加速度计的激励加速度;基于TSS技术的空间域中的低频加速度计的输出电压信号实现了低频加速度计的励磁加速度信号对准，分别通过SAM分别拟合激励加速信号和输出电压信号，并计算相位φ在振动器输出脉冲上的零编码器时，在水平长冲程振动器的零位置处的激励加速信号和输出电压信号的相位φ z 的速度加速信号。并计算低频加速度计的Φ<亚> Z 和φ f ，并通过校准不同频率的灵敏度相位确定低频加速度计的相位频率特性。
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