某大气层外飞行器姿态控制系统的预测控制方法研究

Study on Predictive Control of Attitude Control System of One Exo-atmospheric Flying Vehicle

大气层外的飞行器在姿态机动的过程中,系统呈现出很强的非线性特性,传统的线性控制方法难以直接应用。但在大气层外飞行控制的飞行器,可以在没有反馈线性化的情况下,直接将系统俯仰通道的运动,偏航通道的运动和滚动通道的运动进行分离,并将各个通道之间的耦合视为干扰,应用非线性预测控制方法对各个通道的控制律进行设计。通过仿真,结果表明了该设计方法的可行性且对扰动具有一定的适应性。

When an exo-atmospheric vehicle flying in attitude maneuvering, the system takes on strong property of nonlinearity, and it is difficult to apply the method of linear control theory directly. But the motion of pitch-channel and yaw-channel and rolling-channel of exo-atmospheric flying vehicle can be discomposed under the condition of having no feedback linearization. The coupling terms are deemed as disturbance and the method of nonlinear prediction control is applied to design control law to every channel. The simulation result shows this method is feasible and have some adaptability to disturbance.