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建立了某民用飞机在侧风影响下的数学模型,在给定其航向速度和侧向风速的情况下,得到其在平衡状态下的数值解。根据预瞄理论及PID控制技术,采用Amesim软件建立了飞行员方向控制模型,基于Lms. Virtual. Lab Motion软件建立了飞机的虚拟样机,得到了飞机在受侧风影响下的动态响应。结果表明,此系统具有良好的纠偏效果,能很好地控制飞机的横向偏移,并验证了用此闭环控制系统来模拟飞机受不对称载荷作用下的动态响应过程的可行性。
A mathematical model of a civil aircraft under the influence of crosswind is established. Numerical solutions of the aircraft under equilibrium conditions are obtained given its heading speed and lateral wind speed. According to the preview theory and the PID control technology, the Amesim software is used to establish the pilot control model. The virtual prototype of the aircraft is established based on Lms. Virtual. Lab Motion software. The dynamic response of the aircraft under the influence of the crosswind is obtained. The results show that this system has a good correction effect, can control the aircraft lateral drift well, and verifies the feasibility of using the closed-loop control system to simulate the dynamic response process of the aircraft under the asymmetric load.