加速退化试验技术及其在加速度计中的应用

Application of Accelerated Degradation Testing Technology in Accelerometer

为满足长寿命、高可靠性产品的寿命和可靠性验证需求,从工程实践角度探讨了部件级产品加速退化试验的一般方法,并应用于加速度计的寿命和可靠性评估。首先探讨了加速退化试验的一般程序和注意事项;其次,通过在加速度计上开展加速退化试验具体说明了加速退化试验的实施过程;最后,在获取性能参数的退化数据基础上,确定性能退化模型。结果表明,该方法能实现加速度计的寿命和可靠性评估。根据试验及评估结果,给出改进设计的建议。

To meet the life and reliability verification requirement of long-life product over high reliability, a general method of accelerated degradation testing （ADT） applied on assembly is proposed under the consideration of engineering practice in this paper, meanwhile it is applied for the life and reliability evaluation of accelerometer. First, the general program and some matters need attention of ADT are introduced. Then, the procedure of ADT is presented with its application on an accelerometer. Finally, life and reliability evaluation of the accelerometer is achieved on the performance degradation data and model. Result shows the method can Realize evaluation for accelerometer life and reliability. Put forwards improvement design suggestion according to test and evaluation result.