复杂退化系统的组合维修策略优化

doi:10.7527/S1000-6893.2014.0351

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (3): 872-880.doi: 10.7527/S1000-6893.2014.0351

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles Next Articles

Optimal combination maintenance strategy of deteriorating complex system

LI Dawei¹, ZHANG Zhihua², ZHONG Qianghui³, LI Wan⁴

1. Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China;
2. Office of Research and Development, Naval University of Engineering, Wuhan 430033, China;
3. Department of Equipment Economics and Management, Naval University of Engineering, Wuhan 430033, China;
4. Military Representative Office of Navy in Jiujiang Area, Jiujiang 332007, China

Received:2014-03-27 Revised:2014-12-17 Online:2015-03-15 Published:2015-03-31
Supported by:
National Defence Pre-research Foundation (51327020105, 51304010206)

Abstract

Abstract:

As the existing condition-based maintenance strategy does not consider the effect of scheduled servicing, the performance deteriorating law cannot be reflected exactly, which is not helpful to give a rational maintenance strategy which combines the scheduled servicing with condition-based maintenance. Aimed at this problem, the performance deteriorating rule and maintenance optimization model under combination maintenance strategy are analyzed deeply. The performance deteriorating model is established by composite Poisson process based on the deteriorating characteristic from the failure mechanism. It describes the maintenance effect of servicing by using intensity function which only restores the cumulative deteriorating values and doesn't have impact on the deteriorating law. And the reliability is also analyzed to obtain the peculiarity of ladder decrease and saltation. On the basis of it, the optimization model is given to determine the optimal servicing period and preventive maintenance thresholds, with an objective to minimize the system cost rate and build a constraint to failure risk. The numerical example demonstrates the cost rate rule with different maintenance strategy values. So the existence of optimal cost rate is proved. Compared with the lifetime, it also shows that the optimal maintenance strategy values can prolong system operational time and control the failure risk. So the system can have high safety grade and a great decrease on the maintenance cost.

Key words: maintenance strategy, performance deteriorating modeling, combination maintenance, composite Poisson process, failure risk

CLC Number:

V267
TH137

LI Dawei, ZHANG Zhihua, ZHONG Qianghui, LI Wan. Optimal combination maintenance strategy of deteriorating complex system[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(3): 872-880.

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Optimal combination maintenance strategy of deteriorating complex system

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