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On-Line Prediction of Loss of Control Using Wavelets
- Small Business Information
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Woman-Owned: NoMinority-Owned: NoHUBZone-Owned: No
- Phase 2
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Fiscal Year: 2001Title: On-Line Prediction of Loss of Control Using WaveletsAgency: NASAContract: N/AAward Amount: $599,991.00
Abstract:
Loss of control in aircraft can result from changes in the controlled element, the control system, the environment, or adverse pilot-vehicle interaction. Each of these paths can be characterized by a loss of phase margin. It is not possible to predict or compensate for all possible sources of additional phase lag in the design process, and so there is a need for on-line health monitoring of the flight control system. The challenge then is to detect the erosion of phase margin in a timely manner and either warn the pilot or automatically take corrective action. In the Phase I effort we intend to use an innovative Time Varying Transfer Function technique to track the phase margin of a time-varying system. These special transfer functions are based on Wavelet Transforms. In contrast to windowed Fourier transforms, these transforms have the ability to analyze a signal at multiple scales, thus allowing for quick response to high frequency changes in the system, without sacrificing low frequency resolution. In Phase I we will develop the methodology and an associated on-line health monitoring toolbox to implement our approach. Example scenarios and available flight test data will be used to demonstrate feasibility.Small Business Information at Submission:Systems Technology, Inc.
13766 S. Hawthorne Blvd. Hawthorne, CA 90250EIN/Tax ID:DUNS: N/ANumber of Employees:Woman-Owned: NoMinority-Owned: NoHUBZone-Owned: No
Award Information
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Agency: National Aeronautics and Space Administration |
Branch: N/A |
Award ID: 54870 |
Program Year/Program: 2001 / SBIR |
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Agency Tracking Number: 992416 |
Solicitation Year: N/A |
Solicitation Topic Code: N/A |
Solicitation Number: N/A |