Research of anti-skid brake control strategy based on the runway identification

The aircraft anti-skid brake system is an important part of the aircraft take-off and landing system, whose performance relates to the safety of aircraft directly, so the system must response quickly and work reliably. Driving speed control method is widely used in brake system, but the aircraft will experience wheel-slip under this control method, especially under the poor runway conditions. The maximum rated brake pressure is set according to the poorest runway conditions, which causes the insufficient utilization rate of the friction force. In consideration of the maximum rated brake pressure should be different in different runway conditions and in order to ease the wheel-skid under the driving speed control in poor runway conditions and increase the utilization rate of friction force, this paper proposes a cooperative control method of driving speed and slip ratio basing on the runway identification, for decreasing brake distance and easing the wheel-skid in poor runway conditions.