Abstract
Extenics theory is used to establish the matter-element model for the quality evaluation of the belt conveyor. Introducing the relational function in the extension set theory to calculate the relational degree, defining the weights of evaluation indexes with AHP (the analytic hierarchy process), and so the quality grade of the awaiting evaluation belt conveyor can be obtained. Taking a type of belt conveyor as an example to study the practical application of the proposed method, the results show that the method possesses a certain practicability. The method can give a reasonable evaluation on the quality of belt conveyor.
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