A quantitative methodology for acquiring engineering characteristics in PPHOQ

Authors:
Yanlai Li;Jiafu Tang;Xinggang Luo;Jianming Yao;Jie Xu
Affiliations:
Key Lab of Integrated Automation of Process Industry of MOE in NEU, School of Information Science and Engineering, Northeastern University (NEU), P.O. Box 135, Shenyang, Liaoning 110004, People's ...;Key Lab of Integrated Automation of Process Industry of MOE in NEU, School of Information Science and Engineering, Northeastern University (NEU), P.O. Box 135, Shenyang, Liaoning 110004, People's ...;Key Lab of Integrated Automation of Process Industry of MOE in NEU, School of Information Science and Engineering, Northeastern University (NEU), P.O. Box 135, Shenyang, Liaoning 110004, People's ...;School of Business, Renmin University of China, Beijing 100872, People's Republic of China;School of Software Engineering, Northeastern University (NEU), P.O. Box 135, Shenyang, Liaoning 110004, People's Republic of China
Venue:
Expert Systems with Applications: An International Journal
Year:
2010

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Abstract

Quality function deployment (QFD) is a planning and problem-solving methodology that is widely used for translating customer requirements (CRs) into engineering characteristics (ECs) of a product. Acquiring ECs in product planning house of quality (PPHOQ) is a crucial step of QFD methodology. In previous studies, methods for acquiring ECs are qualitative and subjective. In this paper, a novel quantitative methodology for acquiring ECs in PPHOQ is presented. In the proposed methodology, a hierarchical framework for generating the refined set of EC candidates from the EC candidates obtained by brainstorming is established. A concept of a general relationship between a CR and an EC is introduced, and then a novel approach for identifying the general relationship measures with the help of intelligent characteristics of rough set is proposed. Another concept of the intension threshold of the general relationship corresponding to a CR is introduced, and then a set-operation-based method of acquiring ECs used in PPHOQ is presented. An example of a two-cylinder washing machine is used to demonstrate the proposed methodology.