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由于飞机与尾流模型的非线性,为实现自动精确着舰,探究了具有尾流抑制能力的非线性控制器设计方法。基于气流扰动影响的飞机六自由度非线性模型,利用非线性动态逆控制方法对各控制回路进行了设计,为抑制尾流扰动,提出了应用非线性观测器进行补偿的方法。仿真结果表明,具有非线性干扰观测器的控制器可以在4 s内使飞机稳定在速度为52.04 m/s,并使航迹角保持在±0.5°变化范围内,最终的着舰侧向偏差为-0.13m。
Due to the non-linearity of aircraft and wake model, in order to realize the automatic and accurate landing, the design method of nonlinear controller with wake suppression is explored. Based on the nonlinear six-degree-of-freedom model of aircrafts affected by airflow disturbance, the control loops are designed by using the nonlinear dynamic inverse control method. In order to restrain wake turbulence, a nonlinear observer is used to compensate. The simulation results show that the controller with nonlinear disturbance observer can stabilize the aircraft at a speed of 52.04 m / s within 4 s and keep the track angle within ± 0.5 °. The final shipboard lateral deviation Is -0.13m.