Surface Haptic Feedback Method for Automotive Human-machine Interface Based on Objective and Subjective Data

Abstract:

In response to the problem of lack of haptic feedback or overly simplistic haptic feedback in the virtual buttons of automotive user interfaces， three types of real physical button data （toggle switch， self-locking button， reset button） were collected， and button features were extracted. Different vibration feedbacks were achieved in segments based on finger pressure. Subsequently， a haptic rendering method that reproduces button compliance was further proposed， and its improvement in compliance and user pleasure compared with compliance illusion methods was verified based on user subjective feelings. Finally， a matching experiment was conducted， and the experimenter matched three types of virtual buttons with physical button types based on haptic sensation. The overall accuracy is as high as 94.33%， proving that the vibration haptic feedback of the proposed virtual button effectively restores the unique perceptual characteristics of different physical buttons，and users distinguish the type and state of the manipulated virtual button without the need for visual attention.

Key words:automotive user interface haptics;surface haptic feedback;virtual button vibration rendering;compliance illusion