超低频振动传感器的研究

Study on Ultra-low Frequency Vibration Sensor

提出了利用磁电式速度计实现超低频振动传感器的实用方法,通过串联式校正电路,在保持最佳阻尼的同时,使可测最低频率降至0.6Hz以下。对该超低频振动传感器的校正电路、工作原理、传递函数以及校正前和校正后输出特性的差异进行了系统的分析与阐述。

This paper puts forward the practical method of realizing ultra-low frequency vibration sensing by means of magnetoelectric speedometer.Using the tandem-type correcting circuit,the measurable minimum fre-quency is reduced to less than0.6Hz while the optimal damping is changeless at the same time.Systematic analysis and discussion on the correcting circuit,working principle,transfer function and differences of the output characteristic before and after correcting of ultra-low frequency vibration sensor have been done.