Non-Inductive Actuation Mechanisms to Reduce Interference with Magnetometer-Based Navigation

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-10-M-0144
Agency Tracking Number: N101-096-0610
Amount: $69,698.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2010
Solicitation Topic Code: N101-096
Solicitation Number: 2010.1
Small Business Information
121 Victor Heights Parkway, Victor, NY, 14564
DUNS: 129295338
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Daniele Piazza
 Manager Research and Deve
 (585) 924-4450
Business Contact
 David Henderson
Title: CEO/CTO
Phone: (585) 924-4450
Research Institution
A non-inductive rotary actuator system is proposed to move canards in miniature guided munitions without magnetic interference. This new actuator is a piezoelectric ceramic motor that uses ultrasonic vibrations to directly rotate a shaft with high torque and speed and without gears or other mechanical linkages. Multiple vibrating piezoelectric beams generate tangential forces on the rotating shaft. The forces from the individual piezo elements are optimized in frequency, amplitude and preload and driven by advanced electronic circuits which maximize power density and efficiency. The tangential forces from individual piezo elements are designed to add together and produce 0.2 N-m of torque, 0.13 m/sec speed, using approximately 30 W and fitting in a volume of one inch cubed The system is designed to be simple, low mass and strong enough withstand high launch accelerations. The piezoelectric devices operate directly from less than 24 volts which eliminates the need for a voltage boost and associated inductors. Two-phase ultrasonic drive signals are generated using high-efficiency full-bridge switching integrated circuits. The drive and control electronics, including the driver IC’s, position sensor, and microprocessor fit inside the actuator volume.

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

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