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A Control Method for Aircraft Anti-skid Braking System with Interference Online Estimation

A technology of anti-skid braking and control method, applied in aircraft braking arrangement, braking regulator and other directions, can solve problems such as parameter uncertainty, achieve the effect of improving efficiency, reducing error, and retaining nonlinear characteristics

Active Publication Date: 2022-07-01
CENT SOUTH UNIV
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Problems solved by technology

[0005] The present invention provides an aircraft anti-skid braking system control method with interference online estimation to solve the problem of optimal slip rate tracking of the aircraft anti-skid braking system model in the prior art subject to parameter uncertainty and uncertain external interference

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  • A Control Method for Aircraft Anti-skid Braking System with Interference Online Estimation
  • A Control Method for Aircraft Anti-skid Braking System with Interference Online Estimation
  • A Control Method for Aircraft Anti-skid Braking System with Interference Online Estimation

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Embodiment Construction

[0060] The invention provides an aircraft anti-skid braking system control method with uncertainty interference online estimation, aiming at the problem of tracking the optimal slip rate of the aircraft anti-skid braking system with uncertain model parameters and uncertain external interference, using the original anti-skid braking system Based on the linearization of input and output feedback, the integral sliding mode control method is used, and the online estimation of the adaptive RBF (radial basis function) neural network is used to solve the control effect caused by the uncertainty of model parameters and uncertain external interference. adverse effects. On the one hand, the adaptive RBF neural network technology is used to estimate the uncertainty model parameters online and use it as the compensation part of the control law to minimize the error with the parameter value under the real braking situation. On the other hand, the integral sliding mode control technology is ...

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Abstract

The invention discloses an aircraft anti-skid braking system control method with interference online estimation, comprising the following steps: step 1, establishing a model of the anti-skid braking system and performing feedback linearization processing; step 2, adjusting the uncertainty existing in the anti-skid braking system The disturbance is introduced into the anti-skid braking system model after feedback linear processing, and then the integral sliding mode surface and controller are designed for the anti-skid braking system; the uncertain disturbance includes time-varying and unmodeled external disturbances and parameter changes. In step 3, the adaptive RBF neural network is used to estimate the uncertainty disturbance online, and it is introduced into the controller of the anti-skid braking system as a compensation part. The invention can improve the efficiency of aircraft anti-skid braking from three aspects: strong robust anti-skid braking control law, accurate anti-skid braking system model and uncertainty interference on-line estimation and compensation.

Description

technical field [0001] The invention belongs to the field of aircraft brake control, in particular to a control method of an aircraft anti-skid braking system with interference online estimation. Background technique [0002] In the whole process of aircraft navigation, the time spent in the take-off and landing stages of the ground runway is very short, but large-scale accidents frequently occur in these two stages. It can be seen that a safe and reliable aircraft brake control system is extremely important for aircraft navigation. . [0003] In fact, the aircraft anti-skid braking system has serious uncertainty interference, which has a great impact on the control system. Common disturbances include: internal disturbances caused by parameter changes, unmodeled parameters, and external disturbances caused by time-varying. [0004] At present, the mainstream traditional multi-threshold speed difference plus bias voltage (PID+PBM) control braking effect is not obvious at ho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C25/46
Inventor 李繁飙黄培铭黄科科阳春华廖力清周灿吴政
Owner CENT SOUTH UNIV
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