Nonlinear Robust Adaptive Control of Flexible Air-Breathing Hypersonic Vehicles

Fiorentini, Lisa; Serrani, Andrea; Bolender, Michael A.; Doman, David B.

doi:10.2514/1.39210

Cited by 500 publications

(347 citation statements)

References 20 publications

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“…In the longitudinal dynamics (1) the flexible modes associated with aero-thermo-elastic effects are neglected for simplicity. The thrust T , drag D , and lift L forces, as well as the pitching moment M about the body y-axis are nonlinear uncertain functions that can be given as [2][3][4] Unlike in the existing literature on Hypersonic Vehicle control [4][5][6], where the control output…”

Section: Mathematical Model Of Air-breathing Hypersonic Missilementioning

confidence: 99%

Continuous higher order sliding mode control with adaptation of air breathing hypersonic missile

Shtessel

Edwards

2016

Adaptive Control & Signal

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Hypersonic missile control in the terminal phase is addressed using continuous higher order sliding mode (AHOSM) control with adaptation. The AHOSM self-tuning controller is proposed and studied. The double-layer adaptive algorithm is based on equivalent control concepts and ensures non-overestimation of the control gain to help mitigates control chattering. The proposed continuous AHOSM control is validated via simulations of a hypersonic missile in the terminal phase. The robustness and high accuracy output tracking in the presence of matched and unmatched external disturbances and missile model uncertainties is demonstrated.

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Section: Mathematical Model Of Air-breathing Hypersonic Missilementioning

confidence: 99%

Continuous higher order sliding mode control with adaptation of air breathing hypersonic missile

Shtessel

Edwards

2016

Adaptive Control & Signal

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“…Xu et al 8) proposed a multi-input and multi-output adaptive sliding mode controller for controlling the speed and altitude of hypersonic vehicles. Fiorentini et al 9) utilized a nonlinear robust adaptive controller to control hypersonic vehicles. With the development of artificial intelligence, the neuralnetwork- 10) and fuzzy-logic-based control 11) approaches have also become popular.…”

Section: Introductionmentioning

confidence: 99%

Practical Solution to Efficient Flight Path Control for Hypersonic Vehicles

Sun

Wang

et al. 2016

Trans. Japan Soc. Aero. S Sci.

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There is a severe lag between the pitch attitude and flight path angle of hypersonic vehicles, imposing extraordinary difficulty in achieving high-precision trajectory control. A comprehensive flight path regulation scheme is proposed to resolve this problem. The inherent relationship between the pitch attitude and flight path angle is sufficiently used to establish a feed-forward control framework where the flight path reference is directly fed into the attitude loop in order to quickly obtain the major control component. To achieve efficient tracking, an attitude control method based on active disturbance rejection control (ADRC) is proposed. The new attitude control method utilizes an extended state observer (ESO) to estimate the unknown model dynamics and external disturbances. The remaining part of control is generated by ADRC acting on the flight path angle, which plays a complementary role. The stability margin tester is used to tune the attitude controller explicitly. Finally, simulation examples are provided to demonstrate the effectiveness of the proposed method.

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“…[3][4][5][6][7] Benefiting from the cascade structure of HFV dynamics, a strict-feedback form of the altitude subsystem was obtained and then a backstepping technique was utilized to devise the state-feedback controller in the work by Wu and Meng and Xu et al [8][9][10] Although the backstepping technique has been evolved as an efficient control method for HFVs, tedious and complex analysis is required for virtual controllers and their repeated derivatives. This is the inherent drawback of backstepping, also referred to as "explosion of terms".…”

Section: Introductionmentioning

confidence: 99%

Efficient adaptive constrained control with time-varying predefined performance for a hypersonic flight vehicle

Wei

Luo

Dai

et al. 2017

International Journal of Advanced Robotic Systems

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A novel low-complexity adaptive control method, capable of guaranteeing the transient and steady-state tracking performance in the presence of unknown nonlinearities and actuator saturation, is investigated for the longitudinal dynamics of a generic hypersonic flight vehicle. In order to attenuate the negative effects of classical predefined performance function for unknown initial tracking errors, a modified predefined performance function with time-varying design parameters is presented. Under the newly developed predefined performance function, two novel adaptive controllers with low-complexity computation are proposed for velocity and altitude subsystems of the hypersonic flight vehicle, respectively. Wherein, different from neural network-based approximation, a least square support vector machine with only two design parameters is utilized to approximate the unknown hypersonic dynamics. And the relevant ideal weights are obtained by solving a linear system without resorting to specialized optimization algorithms. Based on the approximation by least square support vector machine, only two adaptive scalars are required to be updated online in the parameter projection method. Besides, a new finite-time-convergent differentiator, with a quite simple structure, is proposed to estimate the unknown generated state variables in the newly established normal output-feedback formulation of altitude subsystem. Moreover, it is also employed to obtain accurate estimations for the derivatives of virtual controllers in a recursive design. This avoids the inherent drawback of backstepping -"explosion of terms" and makes the proposed control method achievable for the hypersonic flight vehicle. Further, the compensation design is employed when the saturations of the actuator occur. Finally, the numerical simulations validate the efficiency of the proposed finitetime-convergent differentiator and control method.

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Nonlinear Robust Adaptive Control of Flexible Air-Breathing Hypersonic Vehicles

Cited by 500 publications

References 20 publications

Continuous higher order sliding mode control with adaptation of air breathing hypersonic missile

Continuous higher order sliding mode control with adaptation of air breathing hypersonic missile

Practical Solution to Efficient Flight Path Control for Hypersonic Vehicles

Efficient adaptive constrained control with time-varying predefined performance for a hypersonic flight vehicle

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