Battery-Less Soft Sensor of Spacecraft Vibration with Advanced Piezoelectric Energy Harvester

Yushin Hara, An Li, Meng Zhou, Keisuke Otsuka, Kanjuro Makihara

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Suppression of structural vibration in a spacecraft is crucial because the vibration hinders the proper operation of the spacecraft and scientific investigations. An active vibration control method has a more effective damping performance than a passive control method. An active method requires an actuator, a power source, and a sensor to realize the vibration suppression. However, the active method has not been adapted for suppression of structural vibration on a spacecraft because the three components required for the active method lead to structural weight gain and a more complex spacecraft design. Recently, smart structurization has been received considerable attention as an effective method to realize a low-weight advanced control system. A piezoelectric transducer attached to a vibrating structure can function as an actuator, an energy source, and a sensor and thereby meets the three requirements for an active vibration control method. This paper reports on the integration of the three functions into a single piezoelectric transducer. The proposed system achieves vibration suppression with a minimal number of components and a simple design. Experimental validation of the estimation and vibration suppression performance are presented. The proposed system achieves the vibration suppression using a single transducer. Evaluation of the robustness of the vibration suppression performance against observation noise is also detailed. The proposed system can maintain effective performance while operating under noise-contaminated conditions.

Original languageEnglish
Title of host publicationIAF Materials and Structures Symposium 2021 - Held at the 72nd International Astronautical Congress, IAC 2021
PublisherInternational Astronautical Federation, IAF
ISBN (Electronic)9781713843085
Publication statusPublished - 2021
EventIAF Materials and Structures Symposium 2021 at the 72nd International Astronautical Congress, IAC 2021 - Dubai, United Arab Emirates
Duration: 2021 Oct 252021 Oct 29

Publication series

NameProceedings of the International Astronautical Congress, IAC
VolumeC2
ISSN (Print)0074-1795

Conference

ConferenceIAF Materials and Structures Symposium 2021 at the 72nd International Astronautical Congress, IAC 2021
Country/TerritoryUnited Arab Emirates
CityDubai
Period21/10/2521/10/29

Keywords

  • Energy harvesting
  • Piezoelectricity
  • Self-powered
  • Self-sensing
  • Smart Structure
  • Vibration damping

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