Fuzzy comprehensive evaluation theory-based elevator equipment health state diagnosis method

Abstract

The invention discloses a fuzzy comprehensive evaluation theory-based elevator equipment health state diagnosis method, which comprises the following steps of: establishing an evaluation index set of a destination control system (DCS) by utilizing a fuzzy comprehensive evaluation method, and establishing an evaluation grade set according to the evaluation index set which comprises a standard layer and an index layer; calculating the index weight of the standard layer by adopting an entropy weight method; adopting an analytic hierarchy process to calculate the index allocation weight of the index layer; calculating the membership degree of each index in the index layer according to the membership degree function and the evaluation grade set, and determining a first evaluation matrix and a second evaluation matrix; evaluating the standard layer according to the first evaluation matrix and the index weight of the standard layer to obtain an evaluation result vector of the standard layer; and evaluating the index layer according to the second evaluation matrix and the index allocation weight of the index layer to obtain an evaluation result vector of the index layer. According to the method, the feasibility of elevator health state evaluation is improved, and meanwhile, the cost required in application is reduced.

Description

technical field [0001] The invention relates to the technical field of elevator safety, in particular to a method for diagnosing the health state of elevator equipment based on fuzzy comprehensive evaluation theory. Background technique [0002] Elevators have become an indispensable part of people's production and life because of their convenience. At the same time, various safety problems caused by elevators are seriously threatening the safety of people's lives and property. In order to effectively evaluate the safety of elevator operation status, elevator equipment safety assessment become very important. However, the establishment of the existing elevator safety evaluation system is based on the physical state of the elevator equipment, including index layers such as the temperature of the traction machine, the speed of opening and closing doors, and the speed when the electric drive system is running smoothly. The index values ​​of the traditional evaluation system are...

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Problems solved by technology

However, the establishment of the existing elevator safety evaluation system is based on the physical state of the elevator equipment, including index layers such as the temperature of the traction machine, the speed of opening and closing doors, and the speed when the electric drive system is running smoothly. The index values ​​of the traditional evaluation system are used in practical applications. It is difficult to measure accurately in the process, and the cost is relatively high

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