A patch-type smart self-sensing actuator

Young Hwan Chang, Do Hyung Kim, In Lee, Jae Hung Han

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


For vibration control applications, a collocated input/output response is generally desired. A perfect sensor/actuator collocation usually provides a stable performance in closed-loop feedback controls. Self-sensing actuators of various types have been proposed, but they still show several problems such as hysteresis, phase error, non-linear response, and complexity of the compensation technique. This paper presents a new patch-type self-sensing actuator based on an extrinsic Fabry-Perot interferometer and a piezoelectric ceramic. The proposed self-sensing actuator not only guarantees stabilities in 'direct-feedback control loops' such as in existing sensoriactuators but also has better strain resolution and a wider dynamic sensing range. Finally, the application of active vibration control is demonstrated using the self-sensing actuator developed.

Original languageEnglish (US)
Pages (from-to)667-677
Number of pages11
JournalSmart Materials and Structures
Issue number3
StatePublished - Jun 1 2006
Externally publishedYes

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering


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