Evaluating the parametric, semi-parametric and nonparametric models for reliability in aircraft braking system

Vajargah, Kianoosh Fathi

doi:10.1007/s40096-020-00362-5

Cited by 2 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the rapid development of aviation technology, modern aircraft is constantly developing towards the direction of higher load and higher performance. The test of the effectiveness and safety of the brake system is especially important [1]. In order to obtain stable brake output pressure, a large number of experts and scholars have conducted in-depth research.…”

Section: Introductionmentioning

confidence: 99%

Design and Verification of Two-Stage Brake Pressure Servo Valve for Aircraft Brake System

Zhang

Huang

et al. 2021

Processes

View full text Add to dashboard Cite

Wheel braking devices is some of the most widely used landing deceleration devices in modern aircraft. Jet pipe pressure servo valves are widely used in large aircraft wheel brake control systems because of their high anti-pollution ability, high sensitivity and fast dynamic response. However, most brake systems suffer vibration phenomena during the braking process. The pressure servo valve is an important part of the hydraulic brake system, and also an important factor affecting the vibration of the system. In order to solve the vibration problem in the brake system this paper present a two-stage brake pressure servo valve design. We place feedback channels at both ends of the main spool to stabilize the output pressure. In addition, modeling, simulation and experimental verifications are carried out. Firstly, the principle and structure of the pressure servo valve are described. An accurate mathematical model of the two-stage brake pressure servo valve and the testing system is established. Then a simulation analysis is carried out. Finally, a two-stage brake pressure servo valve testing experimental platform system is built for experimental verification. The experimental results show that the mathematical model of the two-stage brake pressure servo valve and the test system established in this paper have high accuracy, and the designed servo valve structure can restrain vibrations. The above research results provide a useful theoretical reference for performance optimization, stability analysis and valve body structure improvement of brake pressure servo valves.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and Verification of Two-Stage Brake Pressure Servo Valve for Aircraft Brake System

Zhang

Huang

et al. 2021

Processes

View full text Add to dashboard Cite

show abstract

“…It is not only related to the national economy but also of great significance to the maintenance of national security and national interests [1,2]. In the flight control system of large aircraft, the brake system is important airborne equipment of the aircraft, which has an important influence on the safety of takeoff and landing [3][4][5]. e brake system not only ensures that the plane's taxiing direction on the ground is controllable but also ensures that the plane lands in the shortest distance and brakes safely under the condition of aborting take-off.…”

Section: Introductionmentioning

confidence: 99%

Structural Analysis and Improvement Design of Brake Pressure Valve Feedback Stage in Multivalve Parallel Brake System

Huang

Wang

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

The wheel brake device is one of the most widely used landing deceleration devices in modern aircraft. For large aircraft, a multivalve parallel brake system is usually used. When a brake pressure servo valve of a certain type of aircraft is debugged, the output brake pressure of the system shows obvious periodic oscillation with constant amplitude. This paper focuses on the brake pressure servo valve, which is the key component of the system. There are a large number of feedback and adjustment segments in the brake pressure servo valve, which can not only improve the control accuracy but also introduce nonlinear factors to cause system vibration. Therefore, in this paper, the feedback stage structure of the brake pressure servo valve is analyzed and improved, and a new two-stage pressure servo valve is designed to restrain the output brake pressure vibration of the system. Firstly, the structure principle of the original pressure servo valve is defined, and the function of the feedback stage is analyzed. Secondly, in view of the vibration problem caused by the original brake pressure servo valve, a new two-stage brake pressure servo valve is designed, which is the main contribution of this paper. Thirdly, the dynamics model of the proposed two-stage brake pressure servo valve is established, and the simulation model of the brake pressure servo valve-controlled cylinder system and the multivalve parallel brake servo control system is built. Finally, experiments are carried out on the experimental platform of a multivalve parallel brake system to verify that the proposed two-stage pressure servo valve can restrain the vibration of the system more effectively than the original brake pressure servo valve. And the two-stage pressure servo valve prototype is successfully applied to the actual aircraft brake control system; the system can better maintain a stable brake pressure output.

show abstract

Evaluating the parametric, semi-parametric and nonparametric models for reliability in aircraft braking system

Cited by 2 publications

References 21 publications

Design and Verification of Two-Stage Brake Pressure Servo Valve for Aircraft Brake System

Design and Verification of Two-Stage Brake Pressure Servo Valve for Aircraft Brake System

Structural Analysis and Improvement Design of Brake Pressure Valve Feedback Stage in Multivalve Parallel Brake System

Contact Info

Product

Resources

About