多油箱飞行器的质心平衡优化控油策略研究

Research on optimal fuel control strategy for multi-tank aircraft with centroid balance

针对携带多油箱的飞行器在不同供油策略下质心存在偏移的问题,通过将时间离散化,结合坐标变换及矢量合成方法求得质心变化曲线,研究了飞行器俯仰姿态变化带来的质心变化问题;简化模型后,根据计划供油曲线的不可微点得出供油组合,并提出了备份油箱自适应供油的算法,研究了在给定任务规划条件下,使得瞬时质心关于理想质心的最大距离达到最小的供油策略.仿真结果表明,该策略能够降低多参数寻优的复杂性,与顺序供油相比,实际质心与理想质心的偏移更小.

Aiming at the problem of centroid deviation of aircraft carrying multiple fuel tanks under different fuel supply strategies,this paper obtains the centroid change curve by discretization of time and combines with coordinate transformation and vector synthesis method to study the centroid change caused by the change of aircraft pitch attitude.Then,after simplifying the model,the paper accords to the non-differentiable points of the planned fuel supply curve to derive the fuel supply combination,and proposes an adaptive fuel supply algorithm for back-up tank.Finally,the paper studies the fuel supply strategy to minimize the maximum distance between the instantaneous centroid and the ideal centroid under the given task planning conditions.The simulation results show that the proposed strategy can reduce the complexity of multi-parameter optimization,and that compared with sequential fuel supply,the deviation between the real and ideal centroids is smaller.