关键词: 机械制造自动化, 生产线, 设备可用性, 模糊综合评价, 层次分析

Abstract:

A fuzzy comprehensive evaluation model was built to evaluate the production equipment usability on the basis of analytic hierachy process(AHP), fuzzy mathematic theory as well as the relevant background knowledge of the problem. The model was employed to evaluate the equipment usability of an engine cylinder block production line. Membership functions of fuzzy evaluation sets of equipment usability were constructed based on basis variables, such as the observed values of the mean time between failures, the mean time to repair, the annual number of failures, the average maintenance cost peruyear, and the average availability. Relative weights of evaluation criteria with regard to the evaluation target were given by AHP. The usability order of all equipments in an engine cylinder block production line has been given by the proposed fuzzy comprehensive evaluation method.

Key words: machanical manufacture and automation, production line, equipment usability, fuzzy comprehensive evaluation, analytic hierachy process(AHP)