“RSFS”反馈式短周期地震计的改进试验

Improvement test of RSFS feedback short period seismometer

回顾了"RSFS"反馈式短周期地震计前期研究和设计,通过分析电子反馈网络存在的问题,提出了新的解决方案。新方案采用深度阻尼反馈环电路,减少需要精确选配的阻容元件,具有精简装配调试工序和节约工时的优点;新方案对地震计机械部分参数精度一致性要求降低,提高了部件互换性。新方案对地震计的动态范围、幅频特性在整个观测频带内保持平直,参数一致性带来益处,并可以降低地震计的制作成本。

The initial research and design of electric feedback network of RSFS feedback short period seismometer is reviewed in the paper. New scheme is proposed by analyzing the existed problems of others of its class. Deep damping feedback circuit is used in the new scheme, which has the virtues of reducing the number of resistor-condenser selected accurately, simplifying the debugging process and saving man-hours. Simultaneously the new scheme reduces the demand for mechanical appliance precision of seismometer, improves the interchangeability of parts, lowers the demand for sensor accuracy and reduces the production cost of seismometer.