在產品開發的市場激烈競爭下，客製化的設計模式對設計師而言是必須適應的生態環境。這樣的環境，設計師主要的課題是與消費者溝通時能有所共識。實際上，消費者的專業背景差異不同，時常產生認知差異。因此，為了減少溝通上的障礙，許多學者專家都想盡辦法利用各種方法解決認知共識問題。
從消費者觀點，消費性產品除了功能外，造型是第一個吸引目光的因素。被造型吸引之後，接著多數消費者會透過觸覺的感受才會決定購買產品的意願。消費者經過第二次觸覺感受之後的決定，可能會推翻第一次的視覺情感或證明與視覺情感相符合。視覺情感大多會主觀的伴隨心理感受產生的感性語彙，例如〝舒服的〞的溝通詞彙。對設計師或銷售員而言，不同產品有不同舒服的定義和評價。設計師如何才能做到消費者認為的〝舒服的〞定義和評價？ 這樣的語彙溝通上確實很難有具體的共識。
本研究針對不同材質的手握產品進行獨立觸覺研究。從利用獨立觸覺語彙篩選模式中找出設計師與消費者溝通的〝觸覺〞語彙。再透過模糊演算，找出感性形容詞中的獨立觸覺語彙感受模糊值。讓感性形容詞的抽象性透過獨立觸覺語彙的模糊標準值，能得到更精確的感性標準。藉此轉譯模式達到消費者與設計師之間接近共識的溝通系統。
首先搜尋並歸納出市場上的10種消費性材質進行手握實驗樣本。再從蒐集的68個觸覺語彙，初步先以問卷統計平均數，篩選出29個使用度較高的觸覺語彙。再以焦點團體法將語彙歸納剩下5個，作為代表性獨立觸覺語彙。其中〝刺刺的〞、〝紮實的〞、〝堅硬的〞可再歸類為材質強度的屬性；〝細緻的〞、〝光滑的〞則可歸為材質表面紋路的屬性。設計師可利用強度語彙與表面紋路兩種屬性的語彙為大方向，讓消費者與設計師的溝通縮小差異，甚至在觸覺共識的前提下選用適合的材質。
後續本研究評估常用的手握產品中，挑選以自行車握把套為驗證樣本。實驗中仍然隔絕視覺感官，進行獨立觸摸以挑選代表性感性語彙。為了增加實驗效益，針對自行車握把套的44個觸覺感性語彙挑選。藉由專家以焦點團體法篩選最終縮減為33個感性形容詞。再透過因素分析最後篩選剩下8個感性語彙，分別為〝柔和的〞、〝簡潔的〞、〝舒服的〞、〝激烈的〞、〝穩重的〞、〝規律的〞、〝協調的〞、〝幾何的〞等。然後在5個獨立觸覺語彙中，以模糊理論定義這些8個感性語彙的數值定義。例如，感性詞彙中的〝柔和的〞，在〝刺刺的〞、〝紮實的〞、〝堅硬的〞、〝細緻的〞、〝光滑的〞等5個獨立觸覺語彙各具有多少模糊值，合併起來才能接近〝柔和的〞感性感受。
本研究發現，將感性語彙與獨立觸覺語彙分開篩選，容易讓設計師與消費者溝通時，透過有層次的語彙產生共識。而且可以增加設計的效益，更貼近設計師設計出符合消費者需求之產品。未來更可朝向產品材質選擇之研究方向進行後續研究。

In the fierce competition of product development marketing, the customized design pattern becomes an ecological environment that the designer must adapt to. In such an environment, the main topic of the designer is to have a consensus when communicating with consumers. However, consumers have different professional backgrounds and thus often produce cognitive differences actually. Hence, many researchers and experts have tried their best to adopt various methods to solve cognitive consensus problems to reduce communication barriers. From the point of view of consumers, the product form is the first factor to attract their attention before the function of the products. After consumers are attracted by the form, most consumers would like to make the decision to purchase the product through the tactile feeling. With tactile sensation, the decision of the consumer might overturn the first round of visual sensation or prove to be consistent with the visual sensation. Most of the visual emotions are subjectively accompanied by the emotional vocabulary generated by the psychological feelings, e.g. “comfortable”. The definitions of “comfortable” vocabulary have different definitions and evaluation between designers and sales. How can designers achieve the standard of “comfortable” vocabulary that consumers defined and evaluate the products? It is really difficult to have a specific consensus on such vocabulary communication.
This study conducted independent tactile studies on hand-held products of different materials. The communication vocabularies of tactile senses between designers and consumers were extracted out through the screening mode of Kansei adjective. Then, the fuzzy values of Kansei adjective for the tactile senses were conducted by the algorithm of fuzzy. The abstraction of Kansei adjectives can be estimated to more accurate to consumers' standard of the Kansei evaluation by adopting the fuzzy number of tactile sense. This translation mode can achieve a good communication system between consumers and designers.
Firstly, ten kinds of consuming materials to be the hand-held experimental samples were summarized from the collected materials in the marketing. Secondly, 68 extensive tactile vocabularies were collected and then 29 tactile vocabularies of them were screened out by high-frequency selection according to the statistical averages of the questionnaire. Then the number of the tactile vocabularies was conducted to be 5 by using the focus group method in which “prickly”, “firm” and “hard” were conducted into the property of the material strength, and “lustrous” and “smooth” were conducted into the property of the surface texture. Designers can set the vocabularies of the two properties of material strength and surface texture to be the main direction of tactile sense. These vocabularies can narrow down the communication difference between consumers and designers even select suitable materials with the premise of the tactile consensus.
In the subsequent evaluation, this study took the bicycle grip sleeves to be the common cases of verification samples of hand-held products. The visual senses were also dismissed for selecting the representative tactile Kansei adjectives. In order to increase the experimental benefits, 44 tactile Kansei adjectives were chosen for the bicycle grip sleeves. Then the tactile Kansei adjectives was reduced to 33 by focus groups method conducted by experts. Finally, the tactile Kansei adjectives were reduced to be 8 based on the results of factor analysis, which were “soft”, “concise”, “comfortable”, “intense”, “steady”, “regular”, “coordinated”, and “geometric”. The fuzzy numbers of these 8 tactile Kansei adjectives were defined by the 5 independent tactile vocabularies based on the fuzzy theory. For example, how many of the degree of fuzzy values of the independent tactile vocabularies of “prickly”, “firm”, “hard”, “lustrous” and “smooth” to form the tactile Kansei adjective “soft”?
This study found that the separate filter of independent tactile vocabularies and tactile Kansei adjectives can help the designers to communicate easily with consumers to be a consensus through the hierarchical words. Moreover, it can increase the efficiency of the design and lead the designer to design products that meet the needs of consumers. In the future, research can be followed up in the direction of research on product material selection.

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