Conceptual design analysis method for multidisciplinary complex product

Abstract

The invention relates to a conceptual design analysis method for a multidisciplinary complex product. Against the current situation that a design stage of the multidisciplinary complex product lacks the complete modeling processes and analysis methods, the modeling analysis method that supports the whole process of the multidisciplinary complex product conceptual design phase is established through the steps of demand analysis based on a quantization matrix, functional decomposition based on a functional knowledge base, structural function mapping based on interface matching, structural reorganization based on a design structure matrix and SysML-oriented model expression, so that effective analytical ideas and theoretical support are provided for users, to reduce bad design and improve design efficiency.

Description

technical field

[0001] The invention belongs to the technical field of digital design and manufacturing, and more specifically, the invention relates to a conceptual design analysis method of multidisciplinary complex products. Background technique

[0002] In the process of complex product design, system engineering is a widely used development method, covering links from system requirements analysis, system function structure modeling to system physical composition construction, etc. All are satisfied to maximize efficiency and benefits. With the increasing complexity of products, under the background of integrating multi-disciplines and multi-fields, document-based system engineering is difficult to meet the current research and development needs when solving the complexity of mutual coupling between different fields. Model-based systems engineering ( Model-Based System Engineering, MBSE) has become the best choice. Its core idea is to model and integrate all informatio...

Examples

specific Embodiment approach 1

[0031] Specific implementation mode one: combine figure 1 To illustrate, this embodiment is a conceptual design analysis method for multidisciplinary complex products, including the following steps

[0032] The steps of requirement analysis based on the quantitative matrix: driven by user requirements, map user requirements to system requirements, then quantify the relationship between system requirements, establish a relationship matrix, and conduct analysis;

[0033] The steps of functional decomposition based on the functional knowledge base: the functional decomposition method based on the functional knowledge base, according to the multidisciplinary and multi-field characteristics of complex products, firstly divide the system functions into modules, and then perform matching decomposition according to the functional knowledge base;

[0034] Steps for function structure mapping based on interface matching: map function to structure through analysis and retrieval to obtain...

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment is a further limitation of Embodiment 1, wherein the demand analysis process based on the quantification matrix includes the following steps:

[0038] According to the product attributes, the technicians shall establish a standardized requirement description library for this type of product;

[0039] Establish a mapping matrix from user requirements to system requirements, apply the idea of ​​quality function deployment, and map user requirements to system requirements; at the same time, expand the description of the relationship between requirements, analyze the relationship between system requirements, and track, inherit, improve, and satisfy these requirements. Four relationships are quantified to determine system requirements;

[0040] Analyze the attributes of the obtained system requirements, divide them into functional requirements and non-functional requirements, and carry out system function and product constraints; the functional ...

specific Embodiment approach 3

[0041] Embodiment 3: This embodiment is a further limitation to Embodiment 2, wherein the function decomposition process based on the functional knowledge base includes the following steps:

[0042] The general function of the system is decomposed into the general function of each subsystem according to the characteristics of the subject field, and the total function of the subsystem is defined through the change of the input and output flow of each subsystem;

[0043] Designers in different domains decompose the functions of their respective subsystem blocks according to the following principles: first, decompose according to the change of the value type of the flow, and define the change of the value type as the result of the first layer of functional decomposition; Function, according to the value change, the value space change, and the derivative change, the function is decomposed again to form the next level of function;

[0044]Establish a functional effect knowledge bas...

technical field

[0001] The invention belongs to the technical field of digital design and manufacturing, and more specifically, the invention relates to a conceptual design analysis method of multidisciplinary complex products. Background technique

[0002] In the process of complex product design, system engineering is a widely used development method, covering links from system requirements analysis, system function structure modeling to system physical composition construction, etc. All are satisfied to maximize efficiency and benefits. With the increasing complexity of products, under the background of integrating multi-disciplines and multi-fields, document-based system engineering is difficult to meet the current research and development needs when solving the complexity of mutual coupling between different fields. Model-based systems engineering ( Model-Based System Engineering, MBSE) has become the best choice. Its core idea is to model and integrate all informatio...

Examples

specific Embodiment approach 1

[0031] Specific implementation mode one: combine figure 1 To illustrate, this embodiment is a conceptual design analysis method for multidisciplinary complex products, including the following steps

[0032] The steps of requirement analysis based on the quantitative matrix: driven by user requirements, map user requirements to system requirements, then quantify the relationship between system requirements, establish a relationship matrix, and conduct analysis;

[0033] The steps of functional decomposition based on the functional knowledge base: the functional decomposition method based on the functional knowledge base, according to the multidisciplinary and multi-field characteristics of complex products, firstly divide the system functions into modules, and then perform matching decomposition according to the functional knowledge base;

[0034] Steps for function structure mapping based on interface matching: map function to structure through analysis and retrieval to obtain...

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment is a further limitation of Embodiment 1, wherein the demand analysis process based on the quantification matrix includes the following steps:

[0038] According to the product attributes, the technicians shall establish a standardized requirement description library for this type of product;

[0039] Establish a mapping matrix from user requirements to system requirements, apply the idea of ​​quality function deployment, and map user requirements to system requirements; at the same time, expand the description of the relationship between requirements, analyze the relationship between system requirements, and track, inherit, improve, and satisfy these requirements. Four relationships are quantified to determine system requirements;

[0040] Analyze the attributes of the obtained system requirements, divide them into functional requirements and non-functional requirements, and carry out system function and product constraints; the functional ...

specific Embodiment approach 3

[0041] Embodiment 3: This embodiment is a further limitation to Embodiment 2, wherein the function decomposition process based on the functional knowledge base includes the following steps:

[0042] The general function of the system is decomposed into the general function of each subsystem according to the characteristics of the subject field, and the total function of the subsystem is defined through the change of the input and output flow of each subsystem;

[0043] Designers in different domains decompose the functions of their respective subsystem blocks according to the following principles: first, decompose according to the change of the value type of the flow, and define the change of the value type as the result of the first layer of functional decomposition; Function, according to the value change, the value space change, and the derivative change, the function is decomposed again to form the next level of function;

[0044]Establish a functional effect knowledge bas...

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