Health Assessment of Warship Electromechnical Device Based on Variable Weight Fuzzy Comprehensive Evaluation Method

摘要

Increasing sophistication of naval shipboard machinery coupled with increasing competition for skilled manpower and tightening of defense budgets is forcing the Navy to consider alternative maintenance concepts. One such concept is Condition-Based Maintenance. This paper proposes a health assessment process in condition-based maintenance architecture based on variable weight fuzzy comprehensive evaluation method. Through analyzing the variables affecting on warship electromechnical equipment condition, a layered assessment index system for warship electromechnical equipment health assessment is built. First, the AHP method is used to determine the constant weight of every index, and then the variable weight model is introduced based on balanced function, in which the constant weight is modified to get the variable weights. By comparing the fuzzy synthetic evaluation based on constant weights with that based on variable weighs, the results show that, the condition assessment for warship electromechnical equipment using variable weights based on balanced function is more reasonable and more objective, and the valuation conclusion is also more close to the actual condition of warship electromechnical equipment.