AHP-based mechanical device design and model selection method

Abstract

The invention relates to the field of mechanical design theories and methods, in particular to an AHP-based mechanical device design and model selection method. Experimental data is analyzed obtainedin an existing literature, and a relation matrix of various types of all parts of mechanical devices with respect to performance indexes of the mechanical devices is constructed. According to each user demand, a value is assigned to the judgment matrix of the performance index of the corresponding mechanical device, and a performance index attribute weight under each user demand is solved by using the AHP. A similarity calculation formula of a performance index relation matrix of each part obtained based on the experimental data and a performance index attribute weight matrix solved by the AHP is derived, and a model selection scheme which most conforms to user requirements is obtained through comparison. Subjective selection is converted into quantitative analysis, accurate model selection of multiple parts and various types of complex mechanical devices can be achieved at the initial stage of design, and a quantitative evaluation method is provided for design of the complex multifunctional mechanical devices.

Description

technical field [0001] The invention relates to the field of mechanical design theory and method, and is an AHP-based mechanical device design type selection method, which is applicable to the type selection of multi-components with multiple performance evaluation index basis and each component has multiple types of mechanical devices. Background technique [0002] Mechanical design is an important part of mechanical engineering, the first step in mechanical production, and a purposeful, planned, and organized activity that materializes knowledge-based scientific and technological achievements into mechanical devices. The goal of mechanical design is to design the best machinery under various limited conditions, such as user needs, mechanical strength criteria, reliability, green design criteria, economic benefits, etc., which is a complex multi-level multi-objective decision-making optimization process. Traditional mechanical design mostly stays in the research of the mech...

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Problems solved by technology

However, this method is only suitable for location selection of coal mine crushing stations, which is highly specialized and low in generalization

At present, there is a lack of universal design theory and method research in the initial design stage of mechanical devices. Aiming at the design and selection method of mechanical devices with multi-objective, multi-factor and non-quantifiable characteristics of evaluation indicators, a method suitable for the early stage of design is explored. The design and selection method of user needs and performance evaluation in the later stage of design provides key technical support for the fast, efficient and accurate design of complex mechanical devices with multiple components and each component has multiple types

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