Real Time Aerodynamic Parameter Estimation Schemes- A Survey, Implementation and Comparison

Kamali, C and Girija, G (2005) Real Time Aerodynamic Parameter Estimation Schemes- A Survey, Implementation and Comparison. Technical Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

Real-time estimation of aircraft aerodynamic models is very essential for adaptive and indirect13; reconfigurable controLln this report a literature survey of some of the available real time techniques13; for aircraft aerodynamic parameter estimation is presented. A time domain algorithm based on UD13; factorization extenged Kalman filter (UDEKF) and a frequency domain algorithm based on recursive13; discrete Fourier transform (OFT) for real-time estimation of aircraft longitudinal and lateral13; aerodynamic parameters are implemented and validated using simulated data in PC/MATLAB13; environment. The robustness of the algorithms to noise, bias and drift is tested using simulated data13; of the longitudinal short period and lateral Dutch roll dynamics of an aircraft. A comparison is also13; made between the performance of the time domain and frequency domain techniques to ascertain13; their suitability for real time parameter estimation. It is observed that the OFT outperforms UOEKF13; in terms of parameter estimation error norm, error bounds and requires less computational time.

Item Type:	Proj.Doc/Technical Report (Technical Report)
Uncontrolled Keywords:	Parameter estirhation;flight data analysis;Real-time parameter13; estimation;adaptive/reconfigurable control;time domain algorithm;frequeocy;domaioalgofithm
Subjects:	AERONAUTICS > Aerodynamics
Division/Department:	Flight Mechanics and Control Division, Flight Mechanics and Control Division
Depositing User:	Mrs Manoranjitha M D
Date Deposited:	03 Feb 2009
Last Modified:	24 May 2010 09:39
URI:	http://nal-ir.nal.res.in/id/eprint/956

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