阈值变化竞争失效模型在电子商务系统可靠性中的应用
Application of Threshold Change Competition Failure Model in the Reliability of E-Commerce Systems

MEMS传感器在电子商务系统中扮演着至关重要的角色，物联网技术通过连接物理世界与数字世界，为电子商务带来了巨大的创新机遇。它们不仅满足了物联网对于传感器微型化、智能化、低功耗和成本效益的需求，而且随着技术的进步，其应用领域还在不断拓宽。因此MEMS设备的可靠性评估对电子商务技术的发展有着至关重要的作用。MEMS是具有复杂失效模式的系统，本文考虑到系统在运行过程中，受到冲击作用后，其抵御冲击的能力会下降，因此冲击失效的发生概率会增大，即系统硬失效模式的失效阈值会随着冲击次数的增加而进行相应的改变，因此建立了硬失效阈值时变的竞争失效模型，为电子商务的快速发展提供了可靠的评估。
MEMS sensors play a crucial role in IoT systems. They not only meet the needs of IoT for miniaturization, intelligence, low power consumption and cost-effectiveness of sensors, but also widen their application areas with the advancement of technology. Therefore, the reliability assessment of MEMS devices plays a crucial role in the development of IoT technology. MEMS is a system with complex failure modes. In this paper, considering that the system’s ability to withstand shocks will be reduced when it is subjected to shocks during operation, the probability of shock failure will increase, i.e., the failure threshold of the system’s hard failure modes will be changed accordingly with the increase in the number of shocks, so a hard failure threshold is established. Therefore, a competitive failure model with time-varying hard failure threshold is established.