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以加速退化模型——Arrhenius模型为研究对象,发现加速度计在加速试验过程中,保持加速机理不变的应力与退化轨迹斜率存在密切关系.通过针对退化轨迹模型分别为一次函数、指数函数和幂函数三种常见情况,从激活能不变角度推导出保证加速度计加速机理不变的应力-斜率公式,然后基于退化轨迹斜率区间检验提出了一种加速机理一致性条件确定方法,最后根据加速度计恒定高温标度因数稳定性退化仿真试验数据,准确得到了保持加速度计标度因数稳定性退化机理一致的应力边界,验证了该方法的可行性.
Arrhenius model is taken as the research object, and it is found that the accelerometer is closely related to the slope of the degraded trajectory while keeping the accelerating mechanism constant during the acceleration test. By analyzing the degenerate trajectory model as a linear function, exponential function and power Function, we derive the stress-slope formula to ensure the accelerometer’s acceleration mechanism is invariant from the activation energy point of view, and then propose a method to determine the consistency of acceleration mechanism based on the test of slopes of degenerate trajectories. Finally, according to the acceleration Based on the experimental data of degradation stability of constant high-temperature scaling factor, the stress boundary that keeps the degradation mechanism of stability of accelerometer scale factor accurately is obtained, and the feasibility of this method is verified.