Application of FAHP in Maintenance Assessment of Highway Electromechanical System

Aimed to improve stability and sustainability, maintenance assessment evaluates the running status of highway electromechanical systems by use of a scientific and reasonable evaluation method. Many complex components, such as different divisions with specific technical criteria, form a multi-criteria, multi-level evaluation system. Different from completion acceptance assessment, there is ambiguity in the qualified judgment of maintenance assessment. FAHP (fuzzy analytical hierarchy process) introduced in this paper is applied in the maintenance assessment of highway electromechanical systems, which is based on the research of AHP (analytic hierarchy process) and a fuzzy comprehensive evaluation method. This evaluation method can quantify qualitative criteria with the Delphi method, determine a subordinate degree by triangle function, set weight matrix by AHP, and establish a hierarchy fuzzy evaluation model with judgment matrix. At the end, the assessment result is normalized. To resolve the contradiction and complexity of maintenance assessment, this paper applies FAHP which combines both qualitative and quantitative criteria with typical cases.