Simulation for Multi-point Haptic Feedback Based on Ultrasound Phased Array

As a new type of interaction way, haptic feedback has attracted a lot of attention. Among different kinds of haptic feedback methods, contactless haptic feedback based on ultrasound array has become one of the most promising methods because of its simple structure, low cost, diverse feedback forms and flexible adjustment. This paper firstly discusses the mechanism of human body's tactile sensation in detail, and then analyzes the mechanism of the realization of haptic feedback by ultrasound phased array. Then the mathematical model of ultrasound phased array’s acoustic field is established, and the methods for solving single point and multi-point haptic feedback are presented. The energy efficiency is further optimized for the solution of multi-point haptic feedback.

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