基于非线性动态逆滑模的纵向着舰系统设计

通常发生的舰载机进舰着舰事故中，大多数是由于舰载机纵向航迹控制不好导致的。因此，针对着舰过程中的舰载机非线性运动模型，考虑舰尾流扰动的影响，提出了一种基于非线性动态逆的滑模控制方法，应用在纵向着舰系统的3个控制回路的设计中，来解决精确控制飞行轨迹的问题，并进行了航迹纠偏测试。最后，仿真结果表明，所设计的纵向着舰系统具有较强的鲁棒性和快速跟踪性，提高了舰载机着舰航迹精度，减少了下滑轨迹误差，满足了美国海军安全着舰指标要求。

Design of longitudinal carrier landing system using nonlinear dynamic inversion and sliding mode control

Accidents usually happen during aircraft carrier approaches and landings, most of which are due to poor control of aircraft vertical track. Therefore, aimed at the nonlinear dynamics model of the aircraft and considering the influence of airwake disturbance during the landing process, a sliding mode control system based on the nonlinear dynamic inversion algorithm is proposed for the design of three control loops in the longitudinal carrier landing system, to solve the problem of precise control of flight path, and it is tested for the ability of trajectory adjustment. Simulation results show that the designed system has strong robustness and rapidly tracking capability, improves the accuracy of landing flight path, reduces the glide slope error, and meets the U.S. Navy security landing requirements.