基于改进型模糊层次分析法的舰艇生命力评估

Ship Survivability Assessment Using Improved Fuzzy Analytical Hierarchy Process

由于舰艇系统的复杂性,对全舰进行生命力评估需要将其分解到下一级或几级具体的子系统,通过系统生命力指标得到全舰生命力的描述。传统的模糊层次分析法(FAHP)存在两个缺陷:一方面可能导致计算结果错误;另一方面也可能造成无法计算指标权重,使模糊层次分析法的使用范围受到限制。采用一种改进的模糊层次分析法,建立三角模糊判断矩阵,确定各层次间相关因素的权重,并计算得到各子系统的权重排序。实例证明,该模型的评估结果反映了舰船系统的实际工况。根据该模型计算的评估结果,可以更好地发现舰艇生命力系统的薄弱环节,为损管决策提供科学的理论依据和方法。

For the complexity of ship systems,the total ship survivability assessment is required to be dealt with by evaluating separate subsystem or multi-level subsystems respectively,which are to get the complete description through a range of indices of these subsystems.Traditional method using fuzzy analytical hierarchy process（FAHP） in coping with this issue has two shortfalls,on the one hand it likely lead to incorrect calculation,while the other it is unable to calculate the weight of interrelated factors between different hierarchies,which limits the scope of the use of FAHP method.A hierarchy model was built by an improved analytical hierarchy process to determine the weight of interrelated factors,and the weight sequence of subsystems were obtained by calculation.An actual assessment demonstrated that the results could reflect the practical conditions of ship systems.Meanwhile,according to the calculated results,the weak links of the total ship survivability can be found,which provides a theoretical basis and method of decision-making for ship damage control operation.