Full Band Anticipatory Control Algorithms to Suppress Aggressive Maneuver Vibrations

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911W6-08-C-0052
Agency Tracking Number: A072-006-1704
Amount: $1,390,990.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: A07-006
Solicitation Number: 2007.2
Small Business Information
57 MARYANNE DRIVE, MONROE, CT, 06468
DUNS: 180516577
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Yogesh Mehrotra
 Vice President
 (203) 874-3100
 YMehrotra@AboutMTC.com
Business Contact
 Patrice Green
Title: President
Phone: (203) 261-5200
Email: PreetiSRS3@aol.com
Research Institution
N/A
Abstract
Recent high usage of helicopters in Iraq and Afghan theatres underscores a need for improvements in rotorcraft safety and reliability. Rotor induced vibrations contribute significantly to airframe fatigue, electronic component failure, and pilot workload. In current generation rotorcraft, vibration attenuation is achieved through either airframe mounted tuned-absorbers or active vibration control (AVC) systems. Typical AVC systems use a number of narrow band force generators to reduce accelerations measured at multiple locations in aircraft fuselage. Although current AVC systems are effective at reducing vibration in steady flight, advanced control algorithms are needed to achieve similar results for transient maneuvers. To address deficiencies of current AVC algorithms, Materials Technologies Corp. has formed an exceptionally talented team with experience in rotorcraft modeling, modern control algorithm development, and AVC system development. During the Phase-I effort this team developed state-of-the-art time domain control technologies that addressed known deficiencies in production control algorithms and demonstrated the performance using a high fidelity fuselage model developed in coordination with Sikorsky Aircraft. Lessons learned in Phase I will be leveraged in Phase II to further refine and optimize these control algorithms. Operating envelope will be expanded, and real-time capabilities will be evaluated in a hardware-in-the-loop demonstration on existing AVC test rig at Sikorsky to perform similar evaluations for production AVC controller.

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

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