An integrated self-energized brake system for aircrafts based on a switching valve control

Zhang, Jiao; Liu, Xiaochao; Shang, Yaoxing; Huang, Cheng

doi:10.1016/j.ast.2016.10.021

Cited by 27 publications

(9 citation statements)

References 19 publications

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“…The hydraulic servo system, as the actuators of AABS, is inevitably subject to potential faults. Problems such as hydraulic oil mixing with air, internal leakage, and vibration seriously affect the efficiency of the hydraulic servo system [13,14]. Therefore, in this paper, loss of effectiveness (LOE) is introduced to represent typical AABS actuator faults.…”

Section: Hydraulic Servo System Modelingmentioning

confidence: 99%

“…Despite the above-mentioned works that have made an in-depth study on AABS control, the faults of electro-hydraulic actuators, speed sensors, and other system components are deemphasized, leaving AABS still with many security risks. Aiming to really improve the safety and reliability, the AABS can be designed and configured from the hardware level on the one hand [13][14][15]. However, the demanding hardware experimental conditions limit the development of this method.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive Fuzzy Active-Disturbance Rejection Control-Based Reconfiguration Controller Design for Aircraft Anti-Skid Braking System

et al. 2021

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The aircraft anti-skid braking system (AABS) is an essential aero electromechanical system to ensure safe take-off, landing, and taxiing of aircraft. In addition to the strong nonlinearity, strong coupling, and time-varying parameters in aircraft dynamics, the faults of actuators, sensors, and other components can also seriously affect the safety and reliability of AABS. In this paper, a reconfiguration controller-based adaptive fuzzy active-disturbance rejection control (AFADRC) is proposed for AABS to meet increased performance demands in fault-perturbed conditions as well as those concerning reliability and safety requirements. The developed controller takes component faults, external disturbance, and measurement noise as the total perturbations, which are estimated by an adaptive extended state observer (AESO). The nonlinear state error feedback (NLSEF) combined with fuzzy logic can compensate for the adverse effects and ensure that the faulty AABS maintains acceptable performance. Numerical simulations are carried out in different runway environments. The results validate the robustness and reconfiguration control capability of the proposed method, which improves AABS safety as well as braking efficiency.

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Section: Hydraulic Servo System Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adaptive Fuzzy Active-Disturbance Rejection Control-Based Reconfiguration Controller Design for Aircraft Anti-Skid Braking System

et al. 2021

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“…In automotive braking systems controlled by several HSVs [18,19], to overcome the modeling error and uncertainties, a sliding mode control based closed-loop algorithm scheme is often used to obtain accurate linear brake pressure. Jiao et al [20] developed an integrated self-energized brake system for aircraft in which a 2/3 fast switching valve was used to control the pressure of the brake cylinder. In the research, a back-stepping controller is used to obtain robust performance.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Adaptive Control with Asymmetric Pressure Difference Compensation of a Hydraulic Pressure Servo System Using Two High Speed On/Off Valves

Gao

2022

Machines

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A hydraulic pressure servo system based on two high-speed on/off valves (HSV) is a discontinuous system due to the discrete flow of HSV when driven by pulse width modulation (PWM) signal. Pressure variation in the testing chamber is determined by the flow rate difference between the charging and discharging HSV. In this paper, a pressure controller consisting of a differential PWM (DPWM) scheme, asymmetric pressure difference compensation (APDC) and nonlinear adaptive control (NAC) is proposed to precisely control the pressure. The DPWM scheme is designed to improve the resolution of the net flow rate into the testing chamber. Furthermore, due to the strong asymmetry between the charging and the discharging process, the APDC method is proposed to design the two initial duty cycles of the DPWM signal which help to balance its charging and discharging ability under different working pressure points. Since the pressure system is a nonlinear, uncertain system due to oil compression and leakage, the NAC is designed to calculate the control duty cycle of the DPWM signal, which is used to overcome the unmodeled dynamic and parameter uncertainties. Comparative experiments indicate that the proposed controller can ensure good pressure tracking performance and enhance system robustness under different working pressure points and tracking frequencies.

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“…8 At present, the commercial FSVs are mainly electromagnetic, 9 and their operating frequency is lower than 50 Hz, 10 so they are only applied in the fields of engine fuel injection 11 and aircraft braking. 12,13 Unfortunately, the FSV for the digital hydraulic technology with the requirements for fast response and large flowrate is still in the period of experimental prototypes. 6…”

Section: Introductionmentioning

confidence: 99%

Characteristic investigation of a magnetostrictive fast switching valve for digital hydraulic converter

Chen

Zhu

Zhang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part I:

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In order to adapt the frequency requirements of fast switching valve applied to the digital hydraulic converter, a 2/2 way fast switching valve driven by giant magnetostrictive material was performed in this article. The finite element simulation of the fast switching valve’s electromagnetic field and flow field was carried out. In addition, the integrated analytical model of giant magnetostrictive material–fast switching valve coupling with enhanced transmission line method was built in MATLAB/Simulink. The displacement and pressure-flowrate characteristics of giant magnetostrictive material–fast switching valve were discussed and validated in the experiments. The results indicated that the nonlinearity magnetization presents a positive relationship with the driving current before it reaches the saturated state, and the hydraulic force at the expected opening is far less than output force caused by magnetostrictive strain. The experimental valve displacements are in good agreement with obtained results from analytical model, which reveals that the analytical model is accurate enough to predict the main performances of the fast switching valve. The maximum valve displacement without supply pressure is up to 68 µm, which attenuates moderately with the growth of supply pressure. The experimental responses of the displacement and the pressure of giant magnetostrictive material–fast switching valve are less than 1 ms. The amplitude of output flowrate is 8.1 L/min at the frequency of 100 Hz when the pressure drop across giant magnetostrictive material–fast switching valve is 6 MPa theoretically. Similarly, the maximum transient flowrate derived from experiments reaches 8.2 L/min at pressure drop across giant magnetostrictive material–fast switching valve of 5.9 MPa, which is basically consistent with that predicted by analytical model. These reveal that the giant magnetostrictive material–fast switching valve can be utilized in the digital hydraulic converter to improve the system’s efficiency.

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An integrated self-energized brake system for aircrafts based on a switching valve control

Cited by 27 publications

References 19 publications

Adaptive Fuzzy Active-Disturbance Rejection Control-Based Reconfiguration Controller Design for Aircraft Anti-Skid Braking System

Adaptive Fuzzy Active-Disturbance Rejection Control-Based Reconfiguration Controller Design for Aircraft Anti-Skid Braking System

Nonlinear Adaptive Control with Asymmetric Pressure Difference Compensation of a Hydraulic Pressure Servo System Using Two High Speed On/Off Valves

Characteristic investigation of a magnetostrictive fast switching valve for digital hydraulic converter

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