航空飞行器轨迹引导逆次优控制算法

Inverse Suboptimal Control Algorithm for Trajectory Guidance of Aerial Vehicle

针对目前航空飞行器轨迹引导算法仅适用于特定引导过程,且未考虑系统动态性能要求的问题,提出了航空飞行器轨迹引导逆次优控制算法。该方法通过建立飞行器与目标相对运动的数学模型,以引导准确性和控制经济性为性能指标,根据系统动态性能要求计算时变权值系数,逆向得出线性反馈控制器,从而得到具有给定动态性能的次优引导系统。应用实例表明,该算法适用于包含多约束条件的航空飞行器引导过程,所得到的逆次优控制器满足引导准确性、控制经济性和系统动态性能等指标要求。

Traditonal algorithm for trajectory guidance of aerial vehicle is only available to certain guidance process.Regardless of system dynamic performance,an inverse suboptimal control algorithm for trajectory guidance of aerial vehicle was proposed.By modeling relative motion between vehicle and target,using guidance accuracy and control economy as metrics,time-varying weight coefficient were calculated on the basis of system dynamic performance,and linear feedback controller was derived inversely,thus suboptimal guidance system with dynamic performance was built.An application case showed that the algorithm could be applied to guidance processes including multi-constraints and the derived suboptimal controller fulfilled the requirements of accuracy,economy and dynamic performance.