Advanced Actuator Concepts for High Precision Deformable Mirrors

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC04CA91C
Agency Tracking Number: 035574
Amount: $69,971.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solicitation Year: 2003
Solicitation Topic Code: S3.03
Solicitation Number: N/A
Small Business Information
TRS Technologies, Inc.
2820 East College Ave., Suite J, State College, PA, 16801-7548
DUNS: 78268
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Paul Rehrig
 Principal Investigator
 (814) 238-7485
 paul@trstechnologies.com
Business Contact
 Wesley Hackenberger
Title: President
Phone: (814) 238-7485
Email: wes@trstechnologies.com
Research Institution
N/A
Abstract
TRS Technologies proposes to develop a variety of single crystal actuators for adaptive optics deformable mirrors. Single crystal piezoelectric actuators are proposed as a means of increasing actuator authority while maintaining strain precision for adaptive optics deformable mirrors used in future space observatory missions. Single crystals based on PZN-PT or PMN-PT represent a revolutionary advance in piezoelectric actuator technology. These materials exhibit 5 to 10 times the strain of conventional ceramic piezoelectrics with equivalent deliverable force. Therefore, they offer a much broader design space for adaptive optics systems than is currently available with ceramic actuators, electric motors or magnetic devices. The attributes of single crystals relevant to adaptive optics include: piezoelectric coefficients > 2000 pm/V and field induced strains > 0.5%, blocking forces equivalent to conventional piezoelectric and electrostrictive ceramic, very low strain-electric field hysteresis for high strain precision, much broader operating temperature range than electrostrictive PMN ceramic, very good cryogenic performance, and very high transverse piezoelectric coefficients (d32 better than -1600 pm/V). In the Phase I program TRS will measure the performance of both stack and flextensional-type actuators and SRS will model the impact of incorporating such actuators into state-of-the-art deformable mirror designs.

* information listed above is at the time of submission.

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