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Evaluation and decision of products conceptual design schemes based on customer requirements

Hong-Zhong Huang*, Yanfeng Li, Wenhai Liu, Yu Liu and Zhonglai Wang
The Journal of Mechanical Science and Technology, vol. 25, no. 9, pp.2413-2425, 2011

Abstract : Within the competitive market environment, understanding customer requirements is crucial for all corporations to obtain market share and survive competition. Only the products exactly meeting customer requirements can win in the market place. Therefore, customer requirements play a very important role in the evaluation and decision process of conceptual design schemes of products. In this paper, an evaluation and decision method based on customer requirements is presented. It utilizes the importance of customer requirements, the satisfaction degree of each evaluation metric to the specification, and an evaluation metric which models customer requirements to evaluate the satisfaction degree of each design scheme to specific customer requirements via the proposed BP neural networks. In the evaluation and decision process, fuzzy sets are used to describe the importance of customer requirements, the relationship between customer requirements and evaluation metrics, the satisfaction degree of each scheme to customer requirements, and the crisp set is used to describe the satisfaction degree of each metric to specifications. The effectiveness of the proposed method is demonstrated by an example of front suspension fork design of mountain bikes.

Keyword : Conceptual design; Customer requirement; Evaluation and decision method; Fuzzy reasoning

 
 
 
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