Naidu, VPS and Darshan, J and Girija, G (2004) *On-LineParameter Estimation Using Recursive Discrete Fourier Transform.* Technical Report. National Aerospace Laboratories, Bangalore, India.

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## Abstract

Historically,parameterestimationhas beenperformedoff-line13; using recorded data from specificallydesignedinputs. In this work, an adaptive -, algorithm 'fdsysid' is implemented on PC MATLAB to facilitate on-line estimation13; of stability. and control derivatives of a system. It uses equation error in the frequency domain with recursive Fourier Transform. The on-line parameter estimation consists of extraction of stability and control derivatives of a system using the measured input/output data in a real time mode. Robustness of 'fdsysid'13; algorithm to system noise, bias and on-line assessment of parameter accuracy is studied. The performance of this algorithm is evaluated using Parameter Estimation13; Error Norm (PEEN) and covariance of estimated parameters. The method would find its application in estimation of parameters of aircraft math model.

Item Type: | Proj.Doc/Technical Report (Technical Report) |
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Uncontrolled Keywords: | Parameter estimation;UDP protocol;Frequency domain;recursive Fourier Transform. |

Subjects: | MATHEMATICAL AND COMPUTER SCIENCES > Mathematical and Computer Scienes(General) |

Division/Department: | Flight Mechanics and Control Division, Flight Mechanics and Control Division, Flight Mechanics and Control Division |

Depositing User: | Mrs Manoranjitha M D |

Date Deposited: | 28 Jan 2006 |

Last Modified: | 24 May 2010 09:39 |

URI: | http://nal-ir.nal.res.in/id/eprint/969 |

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