A robust constrained control approach for flexible air‐breathing hypersonic vehicles

Bu, Xiangwei; Wei, Daozhi; He, Guangjun

doi:10.1002/rnc.4912

Cited by 28 publications

(24 citation statements)

References 37 publications

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“…Both low and high frequencies of disturbance values were all estimated and rejected by the proposed DOB. There is new DOB also used information of measured and states [33][34]. However, the proposed DOB in this paper was directly constructed with the relation of disturbance error and its functions.…”

Section:   mentioning

confidence: 99%

“…In [33], the estimated disturbance information was designed with information of state errors and estimated disturbance information. In [34], the first derivative disturbance still need to be bounded. However, the proposed methods is mainly focused for estimate the states and reject the partially unknown dynamic due to the expectation of the mathematical model of SSBM as shown in Eq.…”

Section:   mentioning

confidence: 99%

See 1 more Smart Citation

Robust Sliding Mode Control-Based a Novel Super-Twisting Disturbance Observer and Fixed-Time State Observer for Slotless-Self Bearing Motor System

Nguyen

et al. 2022

IEEE Access

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The disturbance and uncertainty of the motor drive systems are very complicated terms. There is no exception for the slotless-self bearing motor (SSBM), where the perturbations of the bearing motor are mainly came from the outside as the wind affect, from inside as the thermal changing of the coils, and incorrect modeling of the winding processes. First, to delete these inversed terms, this paper proposes a new super-twisting disturbance observer (STDOB) to obtain the desired goal of the robust control design. The proposed disturbance observer was based on the information of measured and estimated states with the aim of softening the cost of the measurement. Second, to estimate the velocities and accelerations of the movements on x  and y  axes, the stability concept of homogeneous function-based was used to design the fixed-time state observers (FTSOBs) for these axes. The state of the rotational operation on   axis was estimated with a fixed-time state observer. Third, to control the positions and rotational speed, a variable boundary layer thickness (VBLT) fixed-time sliding mode control (FTSMC) was designed to force these positions and speed states converge to the desired goals. Finally, the stability of the proposed control algorithm was theoretically verified by using Lyapunov condition and simulation of MATLAB software. The obtained states were acceptably stable with small overshoots, small settling-times, and stable steadystates.INDEX TERMS Slotless-self bearing motor, super-twisting disturbance observer, variable boundary layer thickness, fixed-time sliding mode control.

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Section:   mentioning

confidence: 99%

Section:   mentioning

confidence: 99%

Robust Sliding Mode Control-Based a Novel Super-Twisting Disturbance Observer and Fixed-Time State Observer for Slotless-Self Bearing Motor System

Nguyen

et al. 2022

IEEE Access

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“…In References 16‐19, the learning performance is improved by mining the internal information of the HFV dynamics. Considering the external disturbances such as the wind effect, in References 20‐24, the disturbance observer (DOB) based controllers are developed to reduce the effect of the external disturbances.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric integral BLF based state‐constrained flight control using NN and DOB

Guo

Yan

et al. 2022

Intl J Robust & Nonlinear

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This article proposes an adaptive back‐stepping flight controller under angle of attack (AOA) constraints. Taking the hypersonic flight vehicle (HFV) for example, considering the AOA constraints caused by the scramjet intake requirements, the asymmetric integral barrier Lyapunov function is used to design the controller, while the AOA is directly limited to a predefined interval without setting the tracking error and virtual control constraints separately. Furthermore, the neural networks and disturbance observer are applied in the controller to deal with the model uncertainty and external disturbance. The system stability and the AOA constraints are proved via Lyapunov analysis. Simulation tests on HFV longitudinal dynamics present that the proposed controller can prevent the AOA from exceeding the given bounds while altitude and velocity tracking.

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“…[16] used the disturbance observer-based (DOB) feedback linearization control to overcome constraints on actuators. A combination of backstepping design and nonlinear disturbance observer (NDO) is utilized to handle actuator constraints [17]. By introducing the sliding-mode differentiator techniques and the auxiliary systems, [11] developed the distributed finite time faulttolerant containment control to handle the input saturation.…”

Section: Introductionmentioning

confidence: 99%

Disturbance Observer-Based Adaptive Control of Hypersonic Vehicles with Constrained Actuators

Wang

Li³

et al. 2020

International Journal of Aerospace Engineering

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This study investigates an adaptive controller for the flexible air-breathing hypersonic vehicles (AHVs) subject to external disturbances and actuator constraints. The combination of nonlinear disturbance observer and adaptive mechanism is exploited to design an adaptive controller for each subsystem. For the velocity subsystem, an auxiliary system is employed to handle the scramjet input saturation issue. For the altitude subsystem, the magnitude/rate constraints and the dynamics of aerodynamic control surfaces are addressed by the control allocation module. Simulations show the effectiveness of the proposed control.

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A robust constrained control approach for flexible air‐breathing hypersonic vehicles

Cited by 28 publications

References 37 publications

Robust Sliding Mode Control-Based a Novel Super-Twisting Disturbance Observer and Fixed-Time State Observer for Slotless-Self Bearing Motor System

Robust Sliding Mode Control-Based a Novel Super-Twisting Disturbance Observer and Fixed-Time State Observer for Slotless-Self Bearing Motor System

Asymmetric integral BLF based state‐constrained flight control using NN and DOB

Disturbance Observer-Based Adaptive Control of Hypersonic Vehicles with Constrained Actuators

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