Mechanical device programmed frequency amplitude modulation (PFAM) structuring decomposition method

Abstract

The invention discloses a mechanical device programmed frequency amplitude modulation (PFAM) structural decomposition method. The method comprises the following steps: building a part spectrum, a working condition spectrum, a load spectrum, a function spectrum and a fault spectrum; determining sub-spectrum element functions, and establishing a functional matrix to achieve spectrum -function mapping; determining a corresponding relation between functions and actions to achieve the function-action mapping; and determining infinitesimal corresponding to the actions to achieve action-infinitesimal mapping. According to the method, engineering problems of complex structure, varying working conditions, varying loading, multiple failure modes of a complex mechanical device are solved to enhance quality control and the reliability, and loads and functional failure in operation of the device can be subject to dynamic analysis, and a theoretical basis for improving and enhancing major quality features such as accuracy, accuracy service life and reliability of the complex device is provided.

Description

technical field [0001] The invention belongs to the technical field of mechanical device decomposition methods, in particular to a mechanical device PFAM structured decomposition method. Background technique [0002] There are three commonly used decomposition methods for traditional mechanical products, structure-based decomposition CCP (Components-Component-Parts, CCP), function-based decomposition FBS (Function-Behavior-Structure, FBS), process-based decomposition CSP (Components-Suite -Parts, CSP). The CCP decomposition method focuses on the analysis of the relationship between product structures, and lacks the analysis and description of the functions, processes and actions in the process of product processing and assembly and operation; In complex working conditions and variable loads, the analysis of the action decomposition and coupling relationship between motion units; the CSP decomposition method focuses on the product analysis of the production process with the ...

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Problems solved by technology

[0003] The purpose of the present invention is: in order to solve the above problems, the present invention proposes a mechanical device PFAM structural decomposition method, in order to solve the problem of complex mechanical products with variable working conditions, variable loads, various failure modes and the need to consider the dynamic process. Engineering problems under load and functional failure conditions

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