Aircraft anti-skid braking variable structure control based on generalized Kalman filter

The key of aircraft anti-skid braking control is to control the tyre slip ratio. For the sake of the tyre works under optimal slip ratio, a braking variable structure control (VSC) law based on slip ratio control was introduced so as to obtain the maximum friction coefficient. The aircraft velocity is difficult to be measured, therefore using generalized Kalman filter to estimate the state of nonlinear model, which is the input of anti-skid braking controller. Computer simulation shows the aircraft braking performance is improved and the braking system has a strong robust characteristics.