基于加速因子不变原则的加速度计可靠性分析

Aiming at the problem of excessive relying on subjective experience in accelerated degradation modeling, a reliability analysis method based on invariant principle of acceleration factor is proposed to avoid inaccuracy of reliability evaluation results. Three Wiener process models with random effects are investigated, and the acceleration-factor invariant principle is utilized to deduce the changing rules of the model parameters. Based on this, the reliability functions are set up by taking the Arrhenius model as accelerated model, which overcomes the drawbacks of traditional assumption-based modeling method. To obtain more optimal model among the applicable models, a model selection method based on the quantilequantile plot, box plot and Deviation information criterion values is presented. The application cases of accelerometers demonstrate the effectiveness of the proposed method, and show that the proposed method can provide a more objective technical approach for the accelerated degradation data modeling.