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研究无人作战飞机的自主轨迹控制问题。在一定假设条件的基础上,推导出无人作战飞机的三自由度运动模型;将变结构控制理论运用于无人作战飞机的导引,推导出变结构导引律;在自主轨迹控制算法中,由变结构导引律根据期望轨迹点计算出状态的期望值,并将该期望值与由运动模型得到的状态实际值之间的误差来驱动控制,自主轨迹控制控制的过程就是这个误差收敛到零的过程;仿真结果表明该自主轨迹控制算法能够快速地使无人作战飞机达到预定的轨迹点,且控制过程中控制量的变化平稳,具有良好的效果。
Research on autonomous trajectory control of unmanned combat aircraft. Based on certain assumptions, a 3-DOF motion model of unmanned combat aircraft is derived. Variable structure control theory is applied to the guidance of unmanned combat aircraft to derive a variable structure guidance law. In the autonomous trajectory control algorithm , The variable structure guidance law calculates the expected value of the state according to the desired trajectory point and drives the control by the error between the expected value and the actual value of the state obtained from the motion model. The process of autonomous trajectory control is that the error converges to zero The simulation results show that the autonomous trajectory control algorithm can quickly make the unmanned combat aircraft reach the predetermined trajectory point and the change of the control volume in the control process is stable and has a good effect.