Multi-kansei qualities optimization design of products combined with refined Kano model and QFD

Abstract

Along with the rapid improvements in life quality, the customers' emotional needs for products are becoming increasingly complex and diverse. However, the traditional Kansei Engineering emphasizes more on the connection between single emotional quality and product design elements. The generated design scheme can't satisfy the characteristics of customers' composite perceptual attributes. Therefore, this study develops an optimized design model that satisfies customers' multi-Kansei qualities, and it is committed to continually improving and differentiating products to maintain a competitive advantage. First, before QFD transforms the customers' emotional qualities into engineering features, the refined Kano model distinguishes the attribute division, and the importance of the customer's multi-Kansei qualities. Then, the QFD's relationship matrix is filled with the contribution values between the customer's key emotional qualities and engineering features which are established by the quantitative theory type I. These data contain positive and negative effects. Finally, the weighted sum calculation obtains a prioritization of engineering features. The case study of the citrus juicer validates the effectiveness of the proposed model which significantly improved research efficiency and customer satisfaction.