Self-Sensing Piezoelectric Actuator

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 28453
Amount: $57,708.00
Phase: Phase I
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
One Kendall Square, Suite, 2200, Cambridge, MA, 02139
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Ron L. Spangler
 (617) 621-7087
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A self-sensing piezoelectric actuator is proposed. The device has the potential to be extremely useful, versatile, and widely-applicable. The research involves developing a self-tuning, self-sensing actuator which automatically adapts to changing electrical characteristics (capacitance) of the piezoelectric element and provides a high-quality measurement of either strain, stress, or a combination of both as selected by the user. Several approaches will be considered, with the intent of developing a low-cost analog implementation. The main objective of this Phase I is to demonstrate the feasibility of an adaptive self-sensing piezoelectric actuator under a wide range of possible inputs and for a realistic, nonlinear and lossy piezoelectric material. Phase I will focus on the analysis and simulation required to obtain a design suitable for further development and testing, but will also include some preliminary hardware experimentation. During Phase II a full-scale prototype will be designed, fabricated, and tested. Phase I will establish the feasibility of a Self-Sensing Piezoelectirc Actuator. An inexpensive and effective self-sensing circuit represents significant value added to almost any piezoelectric device. Any actuator becomes its own collocated sensor, with a number of beneficial implications for applications such as structural vibration control and micro-positioning.

* Information listed above is at the time of submission. *

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