Anti-skid braking control considering motion sickness for an aircraft with electric actuator

The electric braking system is one of the most critical subsystems for more electric aircraft. Compared to traditional hydraulic brakes, the electric brake responds faster. However, this can cause large oscillations in the deceleration rate. Such variations may result in an unpleasant experience for passengers. In this paper, motion sickness is modeled for deceleration planning with a focus on passengers’ comfort. The proposed planning method consists of two components: an offline planner based on optimization and an online planner that incorporates motion sickness incidence prediction feedforward. Furthermore, a comprehensive aircraft anti-skid braking control strategy is presented, which includes reference wheel slip rate control, braking pressure control using sliding mode-active disturbance rejection, and electric actuator servo control. Simulations are conducted to evaluate braking safety and passenger comfort under nonlinear factors and parameter uncertainties. The proposed algorithm demonstrates rapid tracking of the reference slip ratio and achieves a significant reduction in motion sickness incidence compared to traditional control methods, with up to a 74.3% reduction in motion sickness.