Abstract
Abstract Civil aircraft will produce undesirable normal overload under the disturbance of vertical turbulence or gusts, which will lead to deterioration of the ride quality of passenger. To solve this problem, a design scheme of gust load alleviation (GLA) control based on UD-PSO optimization is proposed. Firstly, design a classical gust load alleviation control strategy in the control system. The GLA controller will automatically generate the control command, which is calculated by the sensor feedback signal of turbulence or gust. That is, the aileron and spoiler are deflected in the same direction to counteract the undesired normal overload; at the same time, the elevators are deflected to ensured the longitudinal stability of the aircraft. Then, selects a suitable reference model and a reasonable objective function to achieve the desired ride quality performance index. Finally, the UD-PSO algorithm is used to automatically optimize the controller parameters. The simulation results show that the load alleviation control strategy optimized based on UD-PSO can effectively reduce the gust interference, improve the ride comfort, and achieve a good control performance, which shows the effectiveness of the proposed method.
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