单轴摆式加速度计输出异常的故障分析

针对某型单轴摆式加速度计在使用过程中出现的电压输出异常典型故障问题进行理论分析，利用故障树综合性分析方法，层层追踪分析，表达出输出电压出现异常故障内在联系，直观指出单元故障与整体故障之间的逻辑关系，切实归纳总结了工程运用中实际遇到的单轴摆式加速度计输出电压异常故障问题。而后对故障原因进行精确细致定位，提出振荡器电路中的D4二极管正极金丝断裂为此型号加速度计故障根本原因，融入电路金丝断裂机理分析法，并通过试验测试与改进措施方式验证了此故障分析的准确性，一定程度上提升了加速度计可靠性。研究成果可以为加速度计可靠性使用提供一定参考。

Analysis of abnormal output fault of single axis pendulum accelerometers

The oretical analysis is conducted on the typical fault problem of abnormal voltage output during the use of a certain type of single axis pendulum accelerometer. The fault tree comprehensive analysis method is used to track and analyze layers by layers, expressing the internal relationship between abnormal output voltage faults and intuitively pointing out the logical relationship between unit faults and overall faults, We have effectively summarized and summarized the problem of abnormal output voltage faults of single axis pendulum accelerometers encountered in engineering applications. Then, the cause of the fault was accurately and meticulously located, and the D4 diode positive electrode gold wire fracture in the oscillator circuit was proposed as the root cause of the accelerometer fault. The circuit gold wire fracture mechanism analysis method was incorporated, and the accuracy of this fault analysis was verified through experimental testing and improvement measures, which to some extent improved the reliability of the accelerometer. The research results can provide a certain reference for the reliable use of accelerometers.