Active flutter suppression for a wing model

Ghiringhelli, G.L.; Lanz, M.; Mantegazza, Paolo

doi:10.2514/3.25277

Cited by 28 publications

(2 citation statements)

References 10 publications

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“…Static Output Control (SOF) [41] is a simple and effective approach to aeroservoelastic control law synthesis that has been already studied and proven successful for active flutter suppression (AFS) and gust load alleviation (GLA) [42], [43], [44]. In the implementation of Static Output Feedback (SOF), the control input, 𝑼(𝑠), is obtained from measured responses, 𝒀(𝑠), by means of a constant gain matrix, 𝑮(𝑠), as 𝑼(𝑠) = 𝑮(𝑠) 𝒀(𝑠).…”

Section: A Static Output Feedback (Sof)mentioning

confidence: 99%

Wind Tunnel System for Active Flutter Suppression Research: Overview and Insights

Ricci¹,

Toffol²,

Gaspari³

et al. 2022

AIAA Journal

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The paper describes the development of a new state of the art large wind tunnel model for active flutter suppression studies as well as the supporting techniques used in tests focused on the effects of uncertainty. Design guidelines and the resulting aeroelastic characteristics of the model are covered together with representative test results. Those would allow other researchers working in this area to develop control laws for the new model and evaluate them. A number of important lessons and insight are reported regarding the design of the model, the level of success of commonly used mathematical modelling techniques to capture its behaviour, sources of analysis / test correlation discrepancies, multi-function utilization of control surfaces for both system identification and flutter suppression, active flutter suppression testing safety, and techniques for estimating by tests of the robustness of closed-loop active aeroservoelastic systems. The new system has made it possible to repeatedly "push" the actively controlled model, using various flutter suppression control laws, safely, to the actual flutter limit in tests numerous times. This capability

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Section: A Static Output Feedback (Sof)mentioning

confidence: 99%

Wind Tunnel System for Active Flutter Suppression Research: Overview and Insights

Ricci¹,

Toffol²,

Gaspari³

et al. 2022

AIAA Journal

View full text Add to dashboard Cite

show abstract

“…Modern control theory grows fast in last century and gives a choice for AFS design. Many techniques can be sorted as the minimization of an infinite time integral quadratic criterion in terms of the states and controls, such as the linear quadratic regulator method [5] , the linear quadratic Gaussian (LQG) method [6,7] , and the state dependent Riccati equation method [8,9] . Robustness, effectiveness, and low-order characteristic are the main concerns among these researches [6, 10−12] .…”

Section: Introductionmentioning

confidence: 99%

Active flutter suppression of a two-dimensional airfoil based on sliding mode control method

Song

Yang

2010

2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics

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Flutter, a dynamic instability of aircrafts, may degrade the safety of the structures. Active flutter suppression (AFS) is a considerable solution to this issue. Sliding mode control (SMC) method, a nonlinear control strategy, is applied to AFS of a typical two-dimensional airfoil in this work. The airfoil has a trailing-edge flap utilized for flutter control. The system involves a two-DOF (degree-of-freedom) motion whose equations are constructed by using quasi-steady aerodynamic forces. First, the AFS system is designed by state feedback SMC method to suppress the flutter. Then, a sliding mode observer (SMO) is incorporated for further improvements. Finally, classical Runge-Kutta (RK) algorithm is utilized for simulations. The results indicate that the SMO can estimate the system states fast. Combining with the SMO, the controller could suppress the flutter at 14.8% above the open-loop flutter boundary.

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Active Wing Flutter Suppression Using a Trailing Edge Flap

Borglund

Kuttenkeuler

2002

Journal of Fluids and Structures

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Active flutter suppression for a wing model

Cited by 28 publications

References 10 publications

Wind Tunnel System for Active Flutter Suppression Research: Overview and Insights

Wind Tunnel System for Active Flutter Suppression Research: Overview and Insights

Active flutter suppression of a two-dimensional airfoil based on sliding mode control method

Active Wing Flutter Suppression Using a Trailing Edge Flap

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