CAJ | 학술논문

飞翼布局无人机在大气紊流中飞行会受到较大的紊流载荷，而受限于自身构型和舵面配置，无法采用传统控制方案进行紊流载荷减缓。分析了飞翼布局无人机的舵面气动特性，提出一种多组舵面配合产生纵向直接控制力的垂直紊流减缓方案，并采用自抗扰控制技术设计了非线性控制器，在线估计系统误差和紊流扰动，并进行补偿控制。仿真结果表明：飞翼布局无人机采用直接力控制方案，并加入该非线性控制器后，能显著减缓在大气紊流中飞行中的法向过载，同时保证姿态和航迹稳定。
비익포국무인궤재대기문류중비행회수도교대적문류재하，이수한우자신구형화타면배치，무법채용전통공제방안진행문류재하감완。분석료비익포국무인궤적타면기동특성，제출일충다조타면배합산생종향직접공제력적수직문류감완방안，병채용자항우공제기술설계료비선성공제기，재선고계계통오차화문류우동，병진행보상공제。방진결과표명：비익포국무인궤채용직접력공제방안，병가입해비선성공제기후，능현저감완재대기문류중비행중적법향과재，동시보증자태화항적은정。
Unmanned aerial vehicle with fly wing configuration can suffer critical loading when flying through at-mospheric turbulence. Restricted to the aerodynamic configuration and control surfaces distribution, traditional strat-egies for gust load alleviation cannot be applied to the fly wing configuration vehicle. Aerodynamic characteristics of control surfaces are contrasted and analyzed. According to the visible differences in force coefficient and moment co-efficient of the control surfaces, an alleviation strategy is proposed for the unmanned aerial vehicle with fly wing configuration. In this strategy, all control surfaces cooperate in generating longitudinal direct force while keeping ad-dition moment trimmed. A nonlinear controller is designed based on active disturbance rejection control techniques to compensate for system error and turbulence disturbance by online estimation. Simulation results and their analysis show preliminarily that the g-load response to atmospheric turbulence is improved after applying the longitudinal di-rect force control strategy and that the nonlinear controller, and the flight attitude and track can maintain stability besides.