Establishment and weight of supportability indicator system for marine power system using analytic hierarchy process

Supportability evaluation is widely uesd in marine power system which is the most important equipment in a ship or vessel since it can provide energy for other systems of the ship/vessel. Analytic hierarchy process (AHP) is an effective and useful method for supportability evaluation and indicator system establishment due to its simplicity and convenience. In this paper, a hierarchical structure of indicator system for marine power system is established based on AHP, and four judgement matrixes of the supportabilities are constructed. Then a calculation method of the maximum eigenvalue is introduced to solve the ranking weight vector of those matrixes which can determine the weight of the indicator system for supportability evaluation of marine power system. Consistency index and its evaluation method are given for checking the judgement matrixes and conclusions. Finally taking a ship's power system as an example, the above solutions were calculated and results show that APH can grantee the validity and accuracy of the establishment and application of the indicator system. lower hierarchies and indicators could be considered due to the growing demand of the mission and service of marine power system.