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现有的大多数测振传感器不能满足超低频振动测量的需要,有必要扩展其工作频带以满足需要。研究了零极点配置法在941B型测振传感器的应用。通过此方法,拓展了测振传感器的工作频带,尤其是其低频特性得到了拓展,其工作频带由补偿前的0.7~105Hz拓展为补偿后的0.08~109 Hz。在此基础上,利用MATLAB进行了数值仿真,输入不同持续时间的单个半正弦波以及正弦叠加信号,系统在补偿前后的响应表明:低频特性得到明显改善。
Most of existing vibration and vibration sensors can not meet the needs of ultra-low frequency vibration measurement, it is necessary to expand its working frequency band to meet the needs. The application of zero pole configuration method in 941B vibration sensor is studied. Through this method, the working frequency band of the vibration-measuring sensor is expanded, especially its low-frequency characteristic is expanded. The working frequency band of the vibration-measuring sensor is expanded from 0.7 to 105 Hz before compensation to 0.08 to 109 Hz after compensation. On this basis, the numerical simulation is carried out by using MATLAB, and the single half sine wave and the sine superposed signal of different duration are input. The response of the system before and after compensation shows that the low frequency characteristic is obviously improved.