Layout problem of multi-component systems arising for improving maintainability

LUO Xu(罗旭), YANG Yong-min(杨拥民), GE Zhe-xue(葛哲学), WEN Xi-sen(温熙森), GUAN Feng-jiao(官凤娇)

(Science and Technology on Integrated Logistics Support Laboratory,
National University of Defense Technology, Changsha 410073, China)

Abstract:To improve the maintainability design efficiency and quality, a layout optimization method for maintainability of multi-component systems was proposed. The impact of the component layout design on system maintainability was analyzed, and the layout problem for maintainability was presented. It was formulated as an optimization problem, where maintainability, layout space and distance requirement were formulated as objective functions. A multi-objective particle swarm optimization algorithm, in which the constrained-domination relationship and the update strategy of the global best were simply modified, was then used to obtain Pareto optimal solutions for the maintainability layout design problem. Finally, application in oxygen generation system of a spacecraft was studied in detail to illustrate the effectiveness and usefulness of the proposed method. The results show that the concurrent maintainability design can be carried out during the layout design process by solving the layout optimization problem for maintainability.

Key words:maintainability; layout problem; optimization; multi-component system; multi-objective particle swarm optimization