The invention relates to the technical field of aerospace, in particular to a multi-redundancy attitude control engine distribution method and device considering fault tolerance. Comprising the steps that distribution arrays of a main branch, a standby branch and double branches are determined based on the installation position, the installation direction and the thrust of each engine; for each attitude control, the following steps are executed: obtaining a target impulse moment, a target branch and a fault engine; when the fault engine is located at the target branch, determining the required starting time length of each engine based on the distribution matrix corresponding to the target branch, the target impulse moment and the null-space solution of the target branch; and according to the required starting duration of the faulty engine, the impulse moment corresponding to the faulty engine is distributed to the engine of the other branch which does not contain the faulty engine, and the final starting duration of each engine is obtained so as to carry out attitude control on the aircraft. According to the scheme, the engine can be used to the maximum extent, and the system control capability under the fault condition is improved.
本发明涉及航空航天技术领域,特别涉及一种考虑故障容错的多冗余姿控发动机分配方法和装置。包括:基于每一个发动机的安装位置、安装方向和推力,分别确定主分支、备分支和双分支的分配阵;针对每一次姿态控制,均执行:获取目标冲量矩、目标分支和故障发动机;当故障发动机位于目标分支时,基于目标分支对应的分配阵、目标冲量矩和目标分支的零空间解,确定每一个发动机的需求开机时长;根据故障发动机的需求开机时长,将故障发动机对应的冲量矩分配至不包含故障发动机的另一分支的发动机上,得到每一个发动机的最终开机时长,以对飞行器进行此次姿态控制。本方案,可以最大限度的使用发动机,提高故障情况下系统的控制能力。
Multi-redundancy attitude control engine distribution method and device considering fault tolerance
考虑故障容错的多冗余姿控发动机分配方法和装置
2023-12-05
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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