Quantification of a haptic control feedback using an affective scaling method
Haptic feedback device have been widely used and the importance of haptic feedback is becoming more important factor for a control device. Many studies about haptic control device and haptic feedback were researched. Those researches were focused to usability of the device and mechanical approach to haptic feedbacks. However affective approach to haptic feedback of haptic control device has not been studied yet. The aim of this study is to analyze the customers’ satisfaction for the in-vehicle haptic control device. Variables related to ‘satisfaction’ which consists of five affective responses were selected were selected. PC software operating in-vehicle functions was developed for the affective evaluation experiment. Thirty subjects evaluated haptic feedbacks of steering wheel device in vehicle using a questionnaire survey with seven-point semantic differential scale and hundred-point magnitude estimation scale. 16 Haptic feedbacks were developed with computer software in the study. Based on the survey result, ‘distinctness’ was identified as the most positive affective response factor for satisfaction in a haptic thumbwheel and ‘strength’ was the most negative affective response. Also, the relationship between ‘satisfaction’ and its related engineering variables were identified and modeled. The results of the optimal design variables of haptic feedback might help to satisfy customers’ affective satisfaction for various kinds of haptic steering devices.