一种动态逆解算的RLV混合规划控制分配研究

可重复使用运载器的飞行包线大,操纵机构多样,根据其飞行状态对各操纵机构进行优化分配使用是必要的。针对可重复使用运载器三轴角运动的耦合,采用动态逆对控制力矩进行解耦计算。为优化各操纵机构的使用并最大限度使用气动操纵面,减小反作用控制系统的消耗,提出了一种混合规划策略来进行控制分配。气动操纵面与反作用控制系统两者之间的力矩采用链式递增分配,气动操纵面饱和后才启动反作用控制系统,而各气动操纵面之间的控制分配采用二次规划求解,反作用控制系统的力矩分配转化成各喷管开关的0-1整数线性规划进行求解。仿真结果表明,采用混合规划的控制分配能很好实现各操纵机构的优化使用。

Mixed programming control allocation for reusable launch vehicles using dynamic inverse calculating

The reusable launch vehicle (RLV) has multiple control effectors for large flight envelope control, so an optimized control allocation for control effectors is required. Considering the coupled three-axis angular motion, a dynamic inverse strategy for control moment calculation is proposed. For maximum using of aero surfaces and reducing the reaction control system (RCS)’s fuel consumption, a mixed programming method is involved, the moment between aero-surfaces and RCS is allocated by daisy chained, RCS doesn’t start until aerodynamic control surfaces are saturated. The moment between aero-surfaces allocation is using quadratic programming solution, The selecting switch jets of RCS is calculated by 0-1 integer linear programming. Simulation result shows that the mixed programming for RLV control allocation is capable of optimizing multiple control effectors.