采用滚动时域方法与动态规划方法嵌套的形式解决大规模设备更新问题，其中滚动时域方法的机制采用 变 窗口宽度与滚动步长隶属于设备管理大领域，性能更优。VC实现，调试通过。-Rolling in time domain method and dynamic programming method to solve large-scale equipment in the form of nested update problems, rolling horizon mechanism to change the window width and scroll by step under a large area of equipment management, better performance. VC achieved through debugging.