Optimization of aircraft speed vector control based on Hp adaptive pseudo-spectral method
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摘要:
采用Hp自适应伪谱法对速度矢量控制问题进行优化求解。建立基于航迹坐标系的非线性飞机动力学模型，建模时将飞机的过载、推力及滚转的动态响应以动态环节形式进行描述，并通过路径约束实现了实际飞行控制律中的迎角限制功能。通过对控制量、状态量及目标函数的设定实现不同的战术需求，进而利用伪谱法进行优化求解。仿真结果验证了基于Hp自适应伪谱法的速度矢量控制优化的有效性，并展示了在特定场景中处理各种约束的可行性。
Abstract:The Hp adaptive pseudo-spectral method is used to optimize and solve the velocity vector control problem. The track coordinate system is used to create a nonlinear aircraft dynamics model. During the modeling, the dynamic responses of the aircraft’s overload, thrust and roll are described in the form of dynamic links, and the angle of attack limitation function in the actual flight control law is realized through path constraints. Different tactical requirements are achieved by setting the control quantity, state quantity, and objective function, and then the pseudo-spectral method is used for optimization and solution. Based on the Hp adaptive pseudo-spectral method, the simulation results show that the velocity vector control optimization method is effective and that it is feasible to handle different restrictions in certain situations.
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图 4 30°目标航迹倾角最快转向飞机状态曲线
Figure 4. Fastest turning aircraft status curve at 30° target track inclination angle
图 6 路径最短速度矢量控制法飞机状态曲线
Figure 6. Aircraft state curve with shortest path speed vector control method
图 7 高度约束最快转向飞机状态曲线
Figure 7. Altitude-constrained fastest turning aircraft state curve
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