Aircraft Parameter Estimation with Non-Rational Turbulence Model
| Autor: | Tung, F.C. |
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| Zdroj: | IFAC-PapersOnLine; June 1982, Vol. 15 Issue: 4 p1371-1375, 5p |
| Abstrakt: | The maximum likelihood technique is applied to estimate aircraft stability and control parameters from flight data allowing for gust (turbulence) disturbance to be modeled by the von Karman spectrum rather than the more commonly used Dryden spectrum. The von Karman spectrum is a more accurate model of atmospheric turbulence, but unfortunately it is a non-rational function. This leads to complications in the theory because the finite dimensional state space representations can no longer be used. The identification and the associated filtering problems are solved by posing them in an artificially defined infinite dimensional state space. Numerical method of computing the optimal filter weighting function is presented. This algorithm is demonstrated by using actual flight test data. |
| Databáze: | Supplemental Index |
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