Development of an analytical model of wing rock for slender delta wings

This paper proposes an adaptive dynamic surface control (DSC) approach for disturbance attenuation of uncertain nonlinear systems in the parametric strict-feedback form. In the proposed control system, a smooth projection algorithm is employed to train uncertain parameters. The proposed DSC system can overcome the complexity of an actual controller caused by the recursive differentiation of virtual controllers and parameter adaptation laws in the backstepping design procedure. From Lyapunov stability analysis, it is shown that the proposed controller has H ∞ tracking performance to attenuate external disturbances

show abstract

“…The state space form of the wing rock model with ailerons modeled as first-order actuator dynamics is represented by [9] where 1…”

Section: Simulation Resultsmentioning

confidence: 99%

Adaptive dynamic surface control for disturbance attenuation of nonlinear systems

Yoo

Park

Choi

2009

Int. J. Control Autom. Syst.

View full text Add to dashboard Cite

show abstract

“…In simulations, initial conditions for the aircraft are take as α = 55 (18) and (27) [6,6]. Large k si , k f i , ω 1i , ω 2i , i = 1, 2 will improve the disturbance performance, and make the disturbance estimation errors arbitrarily small.…”

Section: Simulation Studymentioning

confidence: 99%

“…Mathematically, three possible nonlinear factors were considered as the inducements of the wing rock phenomenon, which are the variation of damping in roll with angle of sideslip, cubic variation of lateral derivatives with roll rate and sideslip, and the aerodynamic hysteresis in steady-state rolling moment [1,2]. Meanwhile, different wing-rock models have been developed [3][4][5][6]. Based on these simplified models, many control schemes were developed to suppress the influence of wing rock.…”

Section: Introductionmentioning

confidence: 99%

Robust Backstepping Control of Wing Rock Using Disturbance Observer

Gong

2017

Applied Sciences

View full text Add to dashboard Cite

Wing rock is a highly nonlinear phenomenon when the aircraft suffers undesired roll-dominated oscillatory at high angle of attack (AOA). Considering the strong nonlinear and unsteady aerodynamic characteristics, an uncertain multi-input and multi-output (MIMO) nonlinear wing rock model is studied, and system uncertainties, unsteady aerodynamic disturbances and external disturbances are considered in the design of wing rock control law. To handle the problem of multiple disturbances, a robust control scheme is proposed based on the extended state observer (ESO) and the radial basis function neural network (RBFNN) technique. Considering that the effectiveness of actuators are greatly decreased at high AOA, the input saturation problem is also handled by constructing a corresponding auxiliary system. Based on the improved ESO and the auxiliary system, a robust backstepping control law is proposed for the wing rock control. In addition, the dynamic surface control (DSC) technique is introduced to avoid the tedious computations of time derivatives for the virtual control laws in the backstepping method. The stability of the closed-loop system is guaranteed via rigorously Lyapunov analysis. Finally, simulation results are presented to illustrate the effectiveness of the ESO and the proposed wing rock control approach.

show abstract

“…납작하고 얇은 날개가 -축에 대해서만 자 유롭게 롤 운동을 하도록 되어 있으며 이 날 개의 Wing Rock 운동은 다음과 같이 미분방 정식으로 모델링할 수 있다 [1,2]. 롤링모멘트 계수는 다음의 형태를 가지고 있다 [1,2].…”

Section: ⅱ Wing Rock Dynamicsunclassified

Adaptive Control System Designs for Aircraft Wing Rock

Shin¹

2011

Journal of the Korean Society for Aeronautical & Space Scie

View full text Add to dashboard Cite

At high angles of attack, aircraft dynamics can display an oscillatory lateral behavior that manifests itself as a limit cycle known as wing rock. In this paper, a classical and neural network based adaptive control design methods of adaptively stabilizing the oscillatory motion by adapting uncertainties are described in detail. All methods are simulated and compared using a model for an 80 o swept delta wing.

show abstract

Development of an analytical model of wing rock for slender delta wings

Cited by 87 publications

References 3 publications

Adaptive dynamic surface control for disturbance attenuation of nonlinear systems

Adaptive dynamic surface control for disturbance attenuation of nonlinear systems

Robust Backstepping Control of Wing Rock Using Disturbance Observer

Adaptive Control System Designs for Aircraft Wing Rock

Contact Info

Product

Resources

About