Method for generating green conceptual design scheme of electromechanical products based on FSRce model

doi:10.3785/j.issn.1006-754X.2024.03.315

Chinese Journal of Engineering Design

2024, Vol. 31

Issue (1): 10-19 DOI: 10.3785/j.issn.1006-754X.2024.03.315

Product Innovation Design

Method for generating green conceptual design scheme of electromechanical products based on FSRce model

Lei ZHANG^1,²(

),Junwei FANG^1,²(

),Jin SU^1,²,Chuang CAI^1,²,Yunqi ZHAO³

^1.School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China
^2.Anhui Provincial Key Laboratory of Low Carbon Recycling Technology and Equipment for Mechanical and Electrical Products, Hefei University of Technology, Hefei 230009, China
^3.Institute of Rail Transit, Tongji University, Shanghai 201804, China

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Abstract

Aiming at the problem that some electromechanical products fail to comprehensively consider the requirements of customer and environment in the conceptual design stage, which affects the detailed design of products, a method for generating green conceptual design scheme of electromechanical products based on the function?structure?requirements of customer and environment (FSRce) model is proposed. Firstly, the nodes in the existing product design tree were extended and associated by selecting appropriate functions and structures from the case library; at the same time, the importance of customer and environment requirements of the product was obtained by means of data mining, expert scoring and other methods to construct the conceptual design space of product based on the FSRce model. Then, the weighted interval roughness method was used to analyze the importance of customer and environment requirements to obtain the relative importance of requirements, and then the fuzzy quality function deployment (FQFD) was used to transform the relative importance of requirements into the engineering characteristic weights of the product. Finally, the matter-element theory was used to construct the matter-element domain of product and the matter-element set of each structure based on engineering characteristics and the satisfaction scores of each structure were obtained by combining the weights of engineering characteristics, and the optimized product conceptual design scheme that met the requirements of customer and environment was selected by comparing the satisfaction. Taking a small industrial blower as an example, the conceptual design scheme was optimized based on the above method. Compared with the original scheme, the optimized blower reduced the energy consumption by 15.38%, reduced the carbon emission by 15.32%, and improved the satisfaction by 44.66%, which verified the feasibility and effectiveness of the proposed method. The proposed method provides a new way to generate the conceptual design scheme of electromechanical products, which can better assist designers to realize the green design of electromechanical products.

Key words： function?structure?requirements of customer and environment model conceptual design weighted interval roughness method fuzzy quality function deployment matter-element theory

Received: 20 October 2023 Published: 04 March 2024

CLC:

TH 122

Corresponding Authors: Lei ZHANG E-mail: leonchao@163.com;2021170222@mail.hfut.edu.cn

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Cite this article:

Lei ZHANG,Junwei FANG,Jin SU,Chuang CAI,Yunqi ZHAO. Method for generating green conceptual design scheme of electromechanical products based on FSRce model. Chinese Journal of Engineering Design, 2024, 31(1): 10-19.

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https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2024.03.315 OR https://www.zjujournals.com/gcsjxb/Y2024/V31/I1/10

基于FSRce模型的机电产品绿色概念设计方案生成方法

针对部分机电产品在概念设计阶段未综合考虑客户和环境的需求，进而影响产品详细设计的问题，提出了一种基于功能—结构—客户和环境需求（function?structure?requirements of customer and environment, FSRce）模型的机电产品绿色概念设计方案生成方法。首先，从案例库中选择合适的功能和结构对现有产品设计树中的节点进行扩展和关联；同时通过数据挖掘、专家打分等方法获得产品的客户和环境需求重要度，以构建基于FSRce模型的产品概念设计空间。然后，先利用加权区间粗糙数法对客户和环境需求重要度进行分析，得到需求相对重要度，再运用模糊质量功能展开（fuzzy quality function deployment, FQFD）将需求相对重要度转化为产品的工程特性权重。最后，利用物元理论构建基于工程特性的产品物元域和各结构物元集，并结合工程特性权重得到各结构的满意度分值，通过比较满意度优选得到满足客户和环境需求的产品概念设计方案。以某小型工业吹风机为例，基于上述方法对其概念设计方案进行优化。相比于原始方案，优化后的吹风机在能源消耗上降低了15.38%，在碳排放上降低了15.32%，且客户满意度提高了44.66%，由此验证了所提出方法的可行性与有效性。所提出的方法为机电产品概念设计方案的生成提供了一种新思路，能更好地辅助设计人员实现对机电产品的绿色设计。

关键词： 功能—结构—客户和环境需求模型, 概念设计, 加权区间粗糙数法, 模糊质量功能展开, 物元理论

Fig.1 Generation flow of green conceptual design scheme of electromechanical products based on FSRce model

Fig.2 Conceptual design space of electromechanical products based on FSRce model

语言变量	三角模糊数	代表符号
不相关	（0，0，0.3）	$0 ?$
弱相关	（0.1，0.3，0.5）	$1 ?$
相关	（0.3，0.5，0.7）	$5 ?$
强相关	（0.5，0.7，0.9）	$9 ?$

Table 1 Relationship between triangular fuzzy numbers and relativity language variables

Fig.3 Original conceptual design scheme of blower

Table 2 Customer and environment requirements and corresponding importance of blower

Fig.4 Conceptual design space of blower based on FSRce model

Table 3 Approximate intervals of lower bounds for importance of customer and environment requirements of blower

Table 4 Approximate intervals of upper bounds for importance of customer and environment requirements of blower

Table 5 Relative importance boundary interval for customer and environment requirements of blower

Table 6 Relative importance of customer and environment requirements of blower

需求	工程特性
需求	气流量	气流温度	质量	硬度	寿命	噪声	能源消耗量	碳排放量
R₁	$9 ?$	$9 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$9 ?$	$1 ?$
R₂	$5 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$9 ?$	$0 ?$	$0 ?$
R₃	$5 ?$	$9 ?$	$0 ?$	$0 ?$	$5 ?$	$0 ?$	$0 ?$	$0 ?$
R₄	$0 ?$	$0 ?$	$9 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$
R₅	$0 ?$	$0 ?$	$0 ?$	$9 ?$	$9 ?$	$0 ?$	$0 ?$	$0 ?$
R₆	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$5 ?$	$0 ?$	$1 ?$	$0 ?$
R₇	$0 ?$	$0 ?$	$0 ?$	$1 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$
R₈	$0 ?$	$0 ?$	$0 ?$	$1 ?$	$0 ?$	$0 ?$	$0 ?$	$5 ?$
R₉	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$9 ?$
R₁₀	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$0 ?$	$9 ?$	$9 ?$

Table 7 Relativity between customer and environment requirements and engineering characteristics of blower

Table 8 Matter-element domain of blower based on engineering characteristics

Table 9 Matter-element set of each structure of blower based on engineering characteristics

Table 10 Satisfaction scores of each structure of blower based on engineering characteristics

Fig.5 Optimized conceptual design scheme of blower

Fig.6 Comparison of original and optimized conceptual design schemes for blower


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