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本文从分析地震记录器推力机构的基本性能出发,指出获得满足要求的地震记录器电动推力机构的关键在于有一个稳定的低频振荡源、选择适当的电机及有一个高效率的功率放大器。同时通过具体实验总结了几种低频振荡器在电动推力机构中应用的利弊及解决办法,其中若用晶体振荡器的时候可采用修正齿轮的办法来达到微调的目的。并对电机的选择和功放电路进行了一定的分析讨论。
Based on the analysis of the basic performance of the seismograph thrust mechanism, the paper points out that the key to obtaining the seismic recorder electromechanical thrust mechanism is to have a stable low-frequency oscillation source, select the appropriate motor and have a high-efficiency power amplifier. At the same time, the advantages and disadvantages of several kinds of low-frequency oscillators used in the electric thrust mechanism and their solutions are summarized through experiments. Among them, if the crystal oscillator is used, the correction gear can be used to achieve the purpose of fine tuning. And the choice of the motor and power amplifier circuit for a certain analysis and discussion.