一种综合系统固有可用度的新算法及发现

在求解系统状态微分方程的基础上,提出用对分法计算多子系统装备固有可用度的新算法.通过对计算所得数值对比,发现在相同的初始值下,按秒、分、时、日、月5种不同使用周期得到的各瞬时可用度几乎相等,且它们与稳态可用度亦几乎相等,差值在10-3量级.在相同情况下,短周期内以原有的单子系统模型计算结果比稳态值偏大,为10-2量级.这为系统固有可用度的评定及其门限值的校核提供了新的可信依据.

A New Method of Computing Synthesized Systems Ai and Some Discoveries

To get A_i of the synthesized system consisting of no less than two units, a new method of bisection is presented on the basis of solving differential state equations. Given the same parameters, all instant state A(t) in different available periods nearly equals to each other, as well as the steady state A, the difference is on 10~(-3) quantity stage. In the same conditions, the difference between results from the original model and the steady state A is too significant to be ingored. It is more than 10~(-2), especially in short operational cycles. The work provides a reliable warrant for computing A_i of systems and estimating it by a given threshold.