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加速度计加速退化机理模型建模方法

, PP. 1405-1409

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Abstract:

针对传统加速退化试验方案设计缺乏机理模型支持的问题,给出一种基于主机理层试验、关键部件仿真、参数解析和系统辨识于一体的加速退化机理模型建模方法.调研相关资料确定影响产品参数变化的主机理,通过主机理层试验得到有限元仿真输入参数,结合有限元仿真得到产品关键有限元输出参数,同时利用解析方法得到有限元输出参数和产品参数之间关系,根据系统辨识方法建立了加速退化机理模型.以加速度计为例,建立了加速度计标度因数稳定性加速退化机理模型,将模型结果与其在常温贮存条件下结果进行对比分析,结论显示该方法的有效性.

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