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Pulse-Width-Modulated Servo Valve Enabled by Single-Crystal Piezoelectric Stack

Award Information

Agency:
Department of Defense
Branch:
Defense Advanced Research Projects Agency
Award ID:
68721
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
03SB2-0112
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Active Signal Technologies, Inc.
Hammonds South, Unit Q 611 North Hammonds Ferry Road Linthicum Heights, MD -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2005
Title: Pulse-Width-Modulated Servo Valve Enabled by Single-Crystal Piezoelectric Stack
Agency / Branch: DOD / DARPA
Contract: W31P4Q-05-C-0175
Award Amount: $749,648.00
 

Abstract:

Active Signal, Moog, and Cornell University propose to develop and demonstrate a full-scale, benchtop-integrated, high-speed digital servovalve for use in adaptive structural control schemes that employ distributed actuation. Today's servovalves are expensive and low bandwidth because the mechanism and its labor-intensive fabrication processes remain largely unchanged since the product was introduced in 1951. A digitally controlled valve has long been sought but is still unrealized because of shortcomings in candidate pilot stage actuators. Using the single crystal PMN-PT pulse width modulated pilot flapper developed in Phase I, the team demonstrated a 5X bandwidth improvement in the pilot-stage thereby paving the way to a truly digital valve. In Phase II Active Signal and Moog will refine the mechanical/hydraulic design, fabricate an improved pilot-stage and integrate it with an instrumented, as-machined industrial servovalve. The team will measure transfer functions within this integrated valve to enable Cornell University to develop control code to rapidly and precisely adjust spool position to meter flow and eliminate deadband. The performance of the new valve will be compared to an equivalent-size, high end aerospace servovalve. The new servo valve will not only be smaller and far lower in cost, but will integrate readily with digital control.

Principal Investigator:

Keith Bridger
Vice President, Technolog
4106369350
keith.activesignal@email.toast.net

Business Contact:

Arthur Cooke
President
4106369350
arthur.activesignal@email.toast.net
Small Business Information at Submission:

ACTIVE SIGNAL TECHNOLOGIES, INC.
13027A Beaver Dam Road Cockeysville, MD 21030

EIN/Tax ID: 521960088
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No