A Proposal of Kansei Database Framework and Kansei Modelling Methodology for the Delight Design Platform

Abstract

The delight design platform (DDP) is a vision of a new integrated design environment that would enable design engineers to consistently design delightful products. Such delightful products satisfy an attractive quality as well as the performance and must-have qualities of the Kano model. The attractive quality depends on a customer's subjective evaluation involving emotion. To implement DDP, we aim to develop a model-based design (MBD) environment that can simulate a customer's affective responses toward digital design models. With this environment, a designer can test their ideas in the early-design phase. In this article, we propose a Kansei database framework as an essential component of the DDP. The Kansei database stores functions that estimate the customer's emotional responses to the design model. Firstly, we propose a Kansei database structure including two indexes, perception and delight, with a delight map as a visualization scheme. Secondly, we propose a cyclic Kansei model of product experience. Based on the model, we propose a methodology to model the user's cognitive structure while interacting with a product, and create the indexes. Furthermore, we discuss the effect of scene-transition expectations on the user's response to a delightful experience. Keywords:Kansei database, Kano model, model based design, expectation MotivationProducts that satisfy the users' positive emotions, in addition to providing the desired functionality, succeed in the recent matured market. The Kano model classified product qualities into three types: musthave, one-dimensional, and attractive ( Fig. 1, left) (Kano et al., 1984). The must-have quality is a quality that the product must have, such as safety and basic functionality. A one-dimensional quality, e.g., performance, linearly correlates to the customer's satisfaction. The attractive quality provides satisfaction when achieved fully, but does not cause dissatisfaction when it is not achieved, e.g., aesthetics and perceived quality. Here, we define a delight design as a design with all three qualities together (Fig. 1, right). Our objective is to develop a delight-design platform that helps design engineers to integrate all three qualities.In recent engineering designs, tools for model-based design (MBD) and related design environments, such as Modelica (Fritzson, 2011), are being developed for concept design. Such a design environment enables a design engineer to build an essential physical model of the entire product on a computer. Simulation using such a model provides feedback to the designers in the early-design phases so that they * Corresponding author. Email: hide@mail.design.t.u-tokyo.ac.jp. Tel: (+81) -3-5841-6330. 74 Yanagisawa et al. / A Proposal of Kansei Database Framework and Kansei Modelling Methodologycan test their ideas before making physical prototypes. Such essential physical models and simulations in the early-design stage help design engineers make a global strategy before entering the detailed-design stage.To create a delight design,...

Study of design factors for transfer-aid equipment based on caregivers’ feelings

“…These errors were mainly introduced by individual variations. The linear functions relating the adjective factors to the physical quantities describing the motions of caregivers and patients are called delight maps delight maps (Yanagisawa et al, 2016). The delight maps of the present study are displayed in Fig.…”

“…This process corresponds to the validation phase in standard methods, in the sense that appropriate physical quantities are chosen for the properties space. The obtained relationships between the physical quantities and users' feelings were represented as delight maps Yanagisawa et al (2016), in which users' responses to a new product design can be estimated. The details and results of these processes are presented in the following sections.…”

“…This paper is based on a common Kansei engineering approach Schütte et al (2004) and the delight map methodology proposed by Yanagisawa et al (2016).…”

“…The development of an attractive product through relating the physical properties to user impressions is known as Kansei engineering. Adopting the Kansei engineering methodology, Yanagisawa et al (2016) proposed the delight map for easy visualization and estimation of user responses that are proportional to design variables.…”

“…The development of an attractive product through relating the physical properties to user impressions is known as Kansei engineering. Adopting the Kansei engineering methodology, Yanagisawa et al (2016) proposed the delight map for easy visualization and estimation of user responses that are proportional to design variables.The present paper aims to understand caregivers' feelings when viewing the motions and postures of caregivers and patients using transfer-aid equipment. The user impressions are analyzed on a delight map in Kansei engineering.…”