Abstract:The aircraft landing safety problem under the action of the stern wind field is studied. The aircraft model under the influence of wind shear is established and the effect of wind shear on pilot induced oscillation(PIO) during landing is studied. Then a new type of actuator rate limiter is designed, and its inhibitory effect on PIO in the stern wind field environment is studied. Simulation results show that in the process of landing the wind shear has limited effect on PIO, but makes the short "nod" phenomenon suddenly appear, which leads to control with high gain. Therefore the actuator saturation is caused, and PIO is induced. The methods which combine feedback and bypass of the actuator rate limiter with the rate limiter prefilter have prominent effect on suppression of PIO caused by the nonlinear characteristics in aircraft control system.