Tunable Passive Vibration Absorber

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 40538
Amount: $69,014.00
Phase: Phase I
Program: SBIR
Awards Year: 1998
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
247 Third St., Cambridge, MA, 02141
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Brett Masters
 (617) 441-9207
Business Contact
Phone: () -
Research Institution
An adaptive passive vibration absorber prototype based on a electrically shunted piezoelectrics is proposed. The vibration absorber comprises of sensing, signal processing, electrical impedance and actuation subsystems. The sensing subsystem provides reference signals for the adaptation algorithm. Modern signal processing techniques, visa vi. the discrete wavelet transform, are used to generate the commands that update programmable electrical impedance characteristics that passive couple to the structural actuation system. Actuation is provided either by Piezo Fiber Composites, a promising recent development in piezoelectric actuation, or appropriately arranged stack actuators.

* information listed above is at the time of submission.

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