Aircraft anti-skid braking control based on pressure servo control using high-speed on/off valve

In order to optimize one UAV current braking system, a new aircraft anti-skid braking system based on pressure servo control using high-speed on/off valves driven by PWM signals is proposed in this paper. The operation principle of PWM on/off valves is analyzed in details to prove the feasibility of pressure servo control. The brake controller contains pressure and slip ratio two closed loops to achieve accurate control and provide high stability. Experimental results show that the new system indeed improve the braking performance and efficiency.