最小动压约束下的全程轨迹优化设计方法

针对在包括最小动压约束在内的多约束飞行条件下的机动飞行器轨迹优化问题，建立了利用hp自适应伪谱法的飞行器轨迹优化问题求解方法。仿真分析了在无动力飞行时，最小动压约束对各状态变量的影响以及在最小动压约束下，不同分离点参数对飞行轨迹产生的影响。为提高飞行器性能指标，提出一种利用伪谱法的主动段和无动力段全程轨迹联合优化设计方法。仿真结果表明，相较于分段优化，该方法能够提高飞行器最大射程。

The Whole Phase Trajectory Optimization Method with Minimum Dynamic Pressure Constraint

In order to solve trajectory optimization of maneuvering vehicle with multi-constraints including the minimum dynamic pressure constraint,a trajectory optimization method is suggested based on the hp-adaptive pseudospectral method.By using the simulation,the influences of the minimum dynamic pressure constraint on the flight state variables during the unpowered phase are analyzed.And with the minimum dynamic pressure constraint,the effects of the different separation point parameters are discussed.To improve the performance index of the vehicle,a united trajectory optimization method to design the boost phase and the unpowered phase together using the pseudospectral method is proposed.Simulation results indicate that compared to the segment phase optimization method,the proposed method can increase the longest range.