本文研究了在总费用指标约束下串联机械系统可靠度的优化分配问题,提出了以系统的损失期望最小化为目标函数的优化模型。该模型与以系统的总可靠度最大化为目标函数的优化模型相比,在一般情况下更为合理,而在某些特殊的情况下二者是一致的,因此本文所提优化模型更具普遍意义。 This paper studies the problem of optimal distribution of the reliability of a tandem mechanical system under the constraint of the total cost index and proposes an optimization model which takes the loss expectation minimization as the objective function. Compared with the optimization model that maximizes the total reliability of the system as the objective function, the model is more reasonable in general and in some special cases the two are consistent. Therefore, the optimization model presented in this paper has more Universal meaning.