On integral resonant vibration control and the negative direct feedthrough term of a piezoelectric bimorph beam

Ryugo Taira; Tsuyoshi Inoue; Tetsuya Iwasaki; Kentaro Takagi

doi:10.1117/12.2612755

18 April 2022 On integral resonant vibration control and the negative direct feedthrough term of a piezoelectric bimorph beam

Ryugo Taira, Tsuyoshi Inoue, Tetsuya Iwasaki, Kentaro Takagi

Author Affiliations +

Proceedings Volume 12045, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2022; 120450D (2022) https://doi.org/10.1117/12.2612755
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Integral resonant control (IRC) is a vibration control method that measures the displacement of a flexible structure and positively feeds back the force generated by integrating the displacement. In the case of vibration control with IRC, the DC gain and the direct feedthrough term of the transfer function of a flexible structure have important roles for modeling and analysis. In the case of a piezoelectric bimorph beam, we experimentally found that the direct feedthrough term, which should have a positive value in the conventional model, has a negative value. This paper proposes a model in which the direct term is negative, considering the electrical coupling caused by the structure of a piezoelectric bimorph beam. In addition, the stability of the control system is shown based on the negative imaginariness, and the IRC is shown to be applicable to a control object with a negative direct feedthrough term.

Conference Presentation

Citation Download Citation

Ryugo Taira, Tsuyoshi Inoue, Tetsuya Iwasaki, and Kentaro Takagi "On integral resonant vibration control and the negative direct feedthrough term of a piezoelectric bimorph beam", Proc. SPIE 12045, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2022, 120450D (18 April 2022); https://doi.org/10.1117/12.2612755

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available