多星多任务运控系统可靠性优化模型

多星多任务运控系统任务需求是根据实时执行的各种任务而不断变化的,因而其在不同的任务状态下系统具有不同的可靠性结构。首先,给出了系统任务阶段分解的方法;然后,利用连续马尔可夫链理论建立了基于多星多任务运控系统的可靠性模型,给出了固定费用投资下对系统进行可靠性优化设计的边际分析算法;最后,通过案例分析,验证了模型的可行性与实用性。

Optimization Model for Reliability of Multi-Satellites and Multi-Tasks Operation Control System

A multi-satellites and multi-tasks operation control system is composed of the professional equipments which can perform specific tasks and a cluster computer which can perform a variety of tasks. The cluster computer is a standby equipment. The system task requirements accolxting to the various tasks performed in real time are constantly changing, so the system under different task conditions has different reliability structures. In this paper, a method for decomposing the system task stage was presented, and then the reliability model of the multi-satellites and multi-tasks operation control system based on the use of continuous Markov chain theory was established, and the marginal analysis algorithm was given. Furthermore, the feasibility and practicability of the proposed model are testified through a case study.