Phase Optimization for Multipoint Haptic Feedback Based on Ultrasound Array.

ABSTRACT: Ultrasound-based haptic feedback is a potential technology for human-computer interaction (HCI) with the advantages of a low cost, low power consumption and a controlled force. In this paper, phase optimization for multipoint haptic feedback based on an ultrasound array was investigated, and the corresponding experimental verification is provided. A mathematical model of acoustic pressure was established for the ultrasound array, and then a phase-optimization model for an ultrasound transducer was constructed. We propose a pseudo-inverse (PINV) algorithm to accurately determine the phase contribution of each transducer in the ultrasound array. By controlling the phase difference of the ultrasound array, the multipoint focusing forces were formed, leading to various shapes such as geometrie

SUBMITTER: Long Z 

PROVIDER: S-EPMC8949327 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature