Robust Turbulence Load Alleviation
2011 (English)In: IFASD 2011: International Forum on Aeroelasticity and Structural Dynamics, 2011Conference paper (Other academic)
Using a comparatively detailed aeroelastic model for a generic commuter aircraft, a turbulence load alleviation system is designed with the objective of reducing structural fatigue. An H∞-optimal controller for the nominal model is found to be highly sensitive to small disturbances in the control system dynamics, so that a slightly perturbed closed-loop model is destabilized. Robust control methods are exploited to construct an alternative controller which improves robustness to disturbances at a small cost in nominal performance. Finally, fatigue loads experienced by the (open-loop and controlled) model are evaluated by means of two different load reconstruction methods, showing that the simpler modal displacement approach may introduce significant errors in wing bending moments.
Place, publisher, year, edition, pages
robust control theory, aeroservoelasticity, flight simulation
IdentifiersURN: urn:nbn:se:kth:diva-77685OAI: oai:DiVA.org:kth-77685DiVA: diva2:491951
International Forum on Aeroelasticity and Structural Dynamics 2011, Paris, France
QC 201202142012-02-142012-02-072012-05-29Bibliographically approved