应用边界交叉法的高超声速滑翔飞行器多目标轨迹优化

针对高超声速滑翔飞行器复杂约束条件下多目标轨迹设计问题，基于边界交叉法和伪谱法提出多目标轨迹优化方法。分析高超声速滑翔飞行器复杂约束轨迹优化问题的特点，提出多目标轨迹优化问题。采用边界交叉法和伪谱法将多目标轨迹优化问题转化为一组单目标优化子问题，利用非线性规划算法分别求解。在优化过程中，将已求解子问题的解作为下一个子问题的初始值，求解最大横程和最小峰值热流轨迹优化问题。仿真结果表明：所提方法能够有效搜索到优化轨迹的Pareto前沿，可以为高超声速滑翔飞行器轨迹设计提供参考。
The trajectory design for hypersonic glider vehicle subject to complex constraints is a multi-objective trajectory optimization problem. A multi-objective trajectory optimization method combining the boundary intersection method and the pseudospectral method was proposed. The multi-objective trajectory optimization problem was established based on the analysis of the features of trajectory for hypersonic glider vehicle. The multi objective trajectory optimization problem was translated into a set of general optimization sub-problems by using the boundary intersection method and pseudospectral method. The sub-problems were solved by nonlinear programming algorithm. In the method, the solution that has been solved was employed as the initial guess for the next sub-problem. The maxima cross range and minimal peak heat problem was solved by the proposed method. The numerical results demonstrate that the proposed method can obtain the Pareto front of the optimal trajectory, which can provide reference for the trajectory design for hypersonic glider vehicle.