Basappa, K (2004) Evaluation of Recursive Methods for Aircraft Parameter Estimation. In: AIAA Atmospheric Flight Mechanics Conference and Exhibit, 16-19 August 2004,, Providence, Rhode Island.
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Abstract
Recursive parameter estimation consists of extracting aerodynamic stability and control13; derivatives using the flight measured input/output data in a real-time mode. It is useful in13; applications such as on-board verification of recorded data, iterative experiment design,13; verification of flight control laws, and reconfiguration of control system following damages.13; Three recursive algorithms, namely the Recursive Least Squares (RLS), Extended Kalman13; Filter (EKF) and Discrete Fourier Transform (DFT) are formulated and a comparative13; study has been carried out in the off-line environment using simulated and flight data for13; longitudinal and lateral-directional modes of aircraft motion. The results from the standard13; iterative Output Error Method (OEM) form the basis for evaluating the performance of13; these recursive methods. All the recursive methods discussed in this document gave results13; matching with those from OEM. The overall performance of DFT method was found to be13; better than that of the RLS and EKF methods. Also, DFT is computationally simpler and13; unlike the other two methods, there is no requirement of any tuning parameter. From this13; aspect, the DFT technique seems to be preferable for online identification purposes.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | aerodynamic stability and control;flight control laws;recursive least;Squares (RLS);Kalman |
| Subjects: | AERONAUTICS > Aeronautics (General) AERONAUTICS > Aircraft Stability and Control |
| Division/Department: | Flight Mechanics and Control Division |
| Depositing User: | Mr. N A |
| Date Deposited: | 25 Jan 2006 |
| Last Modified: | 24 May 2010 09:39 |
| URI: | http://nal-ir.nal.res.in/id/eprint/988 |
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