论文部分内容阅读
针对复杂多约束条件下空天飞机上升段燃料最优轨迹优化问题,提出一种基于高斯伪谱法的上升段轨迹优化策略.依据发动机的推力特性将上升轨迹合理分段,使原最优控制问题转化为多段最优控制问题后,采用高斯伪谱法进行并行优化计算.数值仿真结果表明采用这种轨迹优化策略能够满足组合动力系统工作模态转换时对飞行状态的约束条件,可以在较短的时间内完成高精度的上升段轨迹优化任务,从而验证了该方法的有效性.
In order to solve the optimal trajectory optimization problem of astronaut aerosols under complex and multi-constrained conditions, a strategy of ascending trajectory optimization based on Gaussian pseudospectral method is proposed.According to the thrust characteristics of the engine, the ascending trajectory is reasonably segmented, so that the original optimal control After the problem is transformed into a multi-stage optimal control problem, the Gaussian pseudospectral method is used to carry out parallel optimization calculation.The numerical simulation results show that this trajectory optimization strategy can meet the constraints of the flight condition when the working mode of the combined dynamic system is changed, In a short period of time to complete high-precision ascending section trajectory optimization tasks, thus verifying the effectiveness of the method.