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Advanced Modeling and Control for Aeroservoelastic Design

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
86966
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
F081-086-0858
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Barron Associates, Inc.
1410 Sachem Place Suite 202 Charlottesville, VA 22901-2496
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2008
Title: Advanced Modeling and Control for Aeroservoelastic Design
Agency / Branch: DOD / USAF
Contract: FA8650-08-M-3838
Award Amount: $99,959.00
 

Abstract:

It is well-understood that actuator nonlinearities, such as free-play, can induce limit cycle oscillations (LCO) in otherwise stable closed-loop systems. In flight control systems, free-play specifications are often set conservatively in order to preclude free-play-induced LCO. However, conservative free-play requirements can increase the manufacturing cost of actuators and give rise to a costly program of regular inspections. An analytical method to safely relax free-play limits could significantly reduce actuator manufacturing and lifecycle costs. Importantly, in addition to accurate aeroelastic modeling to predict LCO, proven adaptive control methods exist to mitigate the effects of uncertain actuator nonlinearities, such as free-play. Thus, maximum benefit would be derived from a tool that combines accurate aeroservoelastic modeling and adaptive control to relax free-play manufacturing tolerances, mitigate the adverse closed-loop effects of actuator free-play, and adapt to changes in free-play over time. Barron Associates and its partners propose to develop an Advanced Modeling and Control for Aeroservoelastic Design (AMCAD) Toolbox to provide the Air Force with a rigorous analytical method to establish safe free-play limits for flight control surfaces. AMCAD will feature our recently-developed, computationally-efficient aeroelastic flutter prediction methodology and a proven adaptive control technique for actuator nonlinearity compensation.

Principal Investigator:

Jason O. Burkholder
Principal Research Scientist
4349731215
barron@bainet.com

Business Contact:

Connie R. Hoover
General Manager
4349731215
barron@bainet.com
Small Business Information at Submission:

BARRON ASSOC., INC.
1410 Sachem Place Suite 202 Charlottesville, VA 22901

EIN/Tax ID: 541243694
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No