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发动机伺服机构故障给新一代运载火箭姿控系统的可靠性和安全性带来挑战,亟须开展重构控制策略研究。针对这一问题,提出一种基于线性规划的摆角重构控制分配方法。将伺服机构故障下的摆角分配问题转化为1范数单目标有约束优化问题,进而转化为标准的线性规划模型,采用单纯形法进行求解。仿真结果表明,所提出的线性规划法能够实现伺服机构故障下姿控系统的完全重构,各摆角均未达到饱和值,表明了方法的有效性。
Engine servo failure poses challenges to the reliability and safety of a new generation of launch vehicle attitude control system. It is urgent to carry out research on reconfigurable control strategy. Aiming at this problem, a linear programming-based swing angle reconstruction control assignment method is proposed. The problem of swing angle distribution under servo fault is transformed into a constrained optimization problem with one-norm single-objective, which is transformed into a standard linear programming model and solved by simplex method. The simulation results show that the proposed linear programming method can completely reconstruct the attitude control system under the failure of servo mechanism, and the swing angle does not reach the saturation value, which shows the effectiveness of the method.