A new model for the redundancy allocation problem with component mixing and mixed redundancy strategy

作者：Gholinezhad Hadi^*; Hamadani Ali Zeinal

来源：Reliability Engineering & System Safety, 2017, 164: 66-73.

DOI：10.1016/j.ress.2017.03.009

• Reliability optimization
• Redundancy allocation problem
• Redundancy strategies
• Series-Parallel systems
• Component mixing

This paper develops a new model for redundancy allocation problem. In this paper, like many recent papers, the choice of the redundancy strategy is considered as a decision variable. But, in our model each subsystem can exploit both active and cold-standby strategies simultaneously. Moreover, the model allows for component mixing such that components of different types may be used in each subsystem. The problem, therefore, boils down to determining the types of components, redundancy levels, and number of active and cold-standby units of each type for each subsystem to maximize system reliability by considering such constraints as available budget, weight, and space. Since RAP belongs to the NP-hard class of optimization problems, a genetic algorithm (GA) is developed for solving the problem. Finally, the performance of the proposed algorithm is evaluated by applying it to a well-known test problem from the literature with relatively satisfactory results.

• 出版日期2017-8