面向天基计算的故障表征与容错机制OA

With the rapid development of commercial aerospace,space-based computing systems are confronted with dual challenges of high failure rates caused by space radiation and the surging demand for computing power resulting from the rapid increase in mission scale.To enhance the reliability and computing efficiency of commercial devices,a four-dimensional system model that includes the physical layer,fault layer,task layer and evaluation layer is constructed,and the"effective average computing power"index to reveal the intrinsic connection between task scheduling and resource allocation is proposed.On this basis,a dynamic fault-tolerant mechanism is designed.Through the coupling modeling of spatio-temporal resources and the adoption of a hybrid optimization strategy,the collab-orative balance of faults-computing power-resources is achieved.Through Monte Carlo simulation evaluation,a hybrid fault-tolerant algorithm integrating redundant configuration,checkpoint optimization and task migration is proposed,which increased the average ef-fective computing power of the system by approximately 39.20％,providing theoretical support and feasible technical paths for the in-orbit reliability guarantee of space-based computing systems.