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为适应高超声速再入滑翔飞行器高动态、多约束的特点,提出了一种快速轨迹优化方法.轨迹优化时将倾侧角控制曲线表示为飞行器能量参数的分段线性函数,从而使纵向轨迹优化问题转化为多维非线性规划问题,并采用序列二次规划(SQP,Sequential Quadratic Programming)方法进行优化求解.横侧向轨迹控制采用偏航角跟踪视线角的方法,设计了视线角误差走廊边界随速度变化的取值,研究了倾侧角反转策略,避免了传统优化中求解倾侧角反转时刻所需的迭代运算.仿真结果表明:该轨迹优化方法在一般高性能微机上生成一条约10 000 km左右的飞行轨迹耗时约5 s,具有较快的优化速度,且精度较高,有一定的工程应用价值.
In order to meet the high dynamic and multi-constraint characteristics of hypersonic reentry gliding aircraft, a fast trajectory optimization method is proposed, which is expressed as a piecewise linear function of aircraft energy parameters during trajectory optimization, so that the longitudinal trajectory optimization problem (SQP, Sequential Quadratic Programming) is used to optimize the solution.Traverse lateral trajectory control adopts the method of tracking the line of sight angle by the yaw angle and designs the method that the line-of-sight error corridor boundary with the speed The inversion strategy is studied and the iterative computation required to solve the roll angle reversal moment in traditional optimization is avoided.The simulation results show that this trajectory optimization method generates about 10 000 km About the flight path takes about 5 s, with a faster optimization speed, and higher accuracy, there is a certain value of engineering applications.