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This research focuses on matter-element theory and extension method, with help of this method; HOQ of QFD can be built more comprehensively and efficiently. Quality function deployment was designed to improve quality in product development. The major procedure of QFD is to identify the customers needs for the product and then convert into appropriate technical measures to fulfill the needs. According to their characteristics to identify the relevant engineering parameters, the prior engineering parameters will be selected as the key requirements to redesign. This study proposes an innovative design and problem-solving process, based on quality function deployment method with the assistances of extension of matter-element. With the help of extension method, customer requirements (CRs) can be translated into product design attributes more widely and engineering characteristics (ECs) can provide effect assistance for the designer to conceive new products comprehensively and deeply. The proposed design evaluation procedure was developed by integrating weighting coefficients of QFD and optimal criteria of extension method. The innovative design case, wheelchair for the elderly, successfully demonstrates the proposed design approach. |
