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提出了带约束可重复使用航天器综合在线可重构再入控制分配方法。在给定可用控制力矩指令和舵面约束条件下,综合利用有效集理论,优化极值算法和链式控制方法,迅速生成包括气动舵面和反推力控制系统(RCS)发动机的控制指令,在线得到了满足所有控制约束且拥有高度精度的控制分配结果。可重构控制分配逻辑利用舵面失效参数特性,建立舵机状态监测系统,并依据分层消息处理机制得到重构控制指令,保证了航天器在舵面失效或操纵效能降低的情况下控制分配具有良好的精度。以某型可重复使用航天器为例,在考虑到舵面失效或操纵效能降低的情况下,通过不同算法的控制分配与仿真结果对比表明,该方法高效、快速、可靠。
A comprehensive on-line reconfigurable reentry control allocation method with constrained reusable spacecraft is proposed. Given the available control torque command and rudder surface constraints, the effective set theory, optimization extreme value algorithm and chain control method are used synthetically to rapidly generate the control commands including the aerodynamic rudder surface and the thrust control system (RCS) engine. The online A control assignment that satisfies all control constraints and possesses high accuracy is obtained. Reconfigurable control distribution logic utilizes the characteristics of the failure parameters of the rudder to establish the servo condition monitoring system and rebuild control instructions according to the hierarchical message processing mechanism to ensure that the spacecraft can control the allocation when the rudder fails or the operating efficiency is reduced With good accuracy. Taking a type of reusable spacecraft as an example, the control distribution and simulation results through different algorithms show that the proposed method is efficient, fast and reliable, considering the failure of the control surface or the reduction of the control efficiency.