Collocated actuation and feedback control of a piezoelectric bandage for producing low-intensity vibrations

Xin Shan, Timothy J. Koh, Rhonda D. Kineman, Onur Bilgen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A large number of people living with type two diabetes suffer from a slow rate of wound healing. Also, some injuries, such as burns, can cause chronic wounds. Low-intensity vibrations have been investigated to promote wound healing. In authors' previous research, a piezoelectric disc was bonded near the wound site to deliver low intensity vibration. It has been demonstrated that low intensity vibration promotes tissue perfusion, granulation tissue formation, and wound healing in diabetic mice. In this paper, a self-sensing feedback control system is designed to ensure vibration consistency. Such consistency is critical to the proposed treatment. The piezoelectric disc acts as an actuator and a sensor synchronously, i.e., a single piezoelectric disk bonded on the skin can produce vibrations and measure strain or stress simultaneously. No separate sensors are needed to deploy in the feedback control systems. Such integrated design eliminates sensors, which saves space and reduces complexity, and it is important to wearable devices. A bridge circuit is adopted in this work to enable the collocated control. The bridge circuit, piezoelectric disk, and tissue are modeled separately. Finally, a single-input singleoutput system model is established for the whole system, and a corresponding controller is designed. Responses based on the SISO model are simulated and analyzed. The important system parameters are investigated and discussed.

Original languageEnglish (US)
Title of host publicationProceedings of ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2021
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885499
DOIs
StatePublished - 2021
EventASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2021 - Virtual, Online
Duration: Sep 14 2021Sep 15 2021

Publication series

NameProceedings of ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2021

Conference

ConferenceASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2021
CityVirtual, Online
Period9/14/219/15/21

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Artificial Intelligence

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