Due to that the operating environment is becoming more and more complex and rigorous, the multiple competing failure modes for the reliability system is much commonly seen. In order to improve the system performance, a sensor-based degradation calibration policy (SBDC policy) is presented in this paper. The model considers the competing failure process which is described by the soft and hard failure modes. In detail, the soft failures occur when the degradation of the system exceeds the failure threshold, and the hard failures are caused by the same shock process. We use the Wiener process model to describe the soft failure and the shock process to describe the catastrophic failure. Meanwhile, in the shock process, the damage associated with the system is normal distributed which is related to the duration of the adjacent shocks. This extended model with calibrations has a good application value for the corresponding complex reliability systems which are subject to the dependent competing failure modes. By the model in this article, the system reliability and safety can be improved and the risk of the abrupt damage shall be reduced as the circumstance changes.

由于操作环境变得越来越复杂和严格，因此可靠性系统的多种竞争性故障模式已成为常见现象。为了提高系统性能，本文提出了一种基于传感器的退化校准策略（SBDC策略）。该模型考虑了竞争性故障过程，该过程由软故障模式和硬故障模式来描述。详细地说，当系统的性能下降超过故障阈值时，就会发生软故障，而硬故障是由相同的冲击过程引起的。我们使用维纳过程模型来描述软破坏，而冲击过程则描述灾难性破坏。同时，在冲击过程中，与系统相关的损害是正态分布的，这与相邻冲击的持续时间有关。这种带有标定的扩展模型对于相应的复杂可靠性系统具有良好的应用价值，这些系统受相关的竞争性失效模式的影响。通过本文中的模型，可以提高系统的可靠性和安全性，并随着情况的变化降低突然损坏的风险。