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Flight Control Laws: Recent Advances in the Evaluation of their Robustness Properties
- Source :
- Aerospace Lab, Aerospace Lab, Alain Appriou, 2012, p. 1-9
- Publication Year :
- 2012
- Publisher :
- HAL CCSD, 2012.
-
Abstract
- This paper reviews a set of robustness analysis tools developed by the authors during the last decade to evaluate the robustness properties of high-dimensional closed-loop plants subject to numerous time-invariant uncertainties. These tools are used to compute both upper and lower bounds on the robust stability margin, the worst-case H∞ performance level, as well as the traditional gain, phase, modulus and time-delay margins. The key idea is to solve the problem on just a coarse frequency grid and to perform a fast validation on the whole frequency range, which results in guaranteed but conservative bounds on the aforementioned quantities. Some heuristics are then applied to determine a set of worst-case parametric configurations leading to over-optimistic bounds. A branch and bound scheme is finally implemented, so as to tighten these bounds with the desired accuracy, while still guaranteeing a reasonable computational complexity. The proposed algorithms are successfully assessed on a challenging real-world application: a flight control law validation problem.<br />Journal Aerospace Lab, Issue 4, May 2012; ISSN: 2107-6596
- Subjects :
- CONSERVATISM
MICRO-ANALYSIS
PHASE
MODULUS AND DELAY MARGINS
[PHYS.PHYS.PHYS-SPACE-PH]Physics [physics]/Physics [physics]/Space Physics [physics.space-ph]
LOWER BOUND
WORST CASE
AVION SOUPLE
MAILLAGE FREQUENTIEL
VALIDATION CALCUL
TOOLBOX MATLAB
UPPER BOUND
BRANCH AND BOUND
GAIN
[PHYS.PHYS.PHYS-SPACE-PH] Physics [physics]/Physics [physics]/Space Physics [physics.space-ph]
ROBUSTESSE STABILITE
COMMANDE VOL
Subjects
Details
- Language :
- English
- ISSN :
- 21076596
- Database :
- OpenAIRE
- Journal :
- Aerospace Lab, Aerospace Lab, Alain Appriou, 2012, p. 1-9
- Accession number :
- edsair.doi.dedup.....0dc52f00e01d9b5910404060bc92ed85