This paper aims to propose a method of optimising the controller reconfiguration (CR) instant for spacecraft control systems with additive actuator faults. Due to severe resource constraints, it is ‘expensive’ for spacecraft to handle the faults in orbit. To overcome the constraints, we try to reduce the CR cost from a perspective of time management. The basic idea of this method is to propose a reconfigurability evaluation index to quantify the capability of the fault system in maintaining admissible performance by CR measures, and then to derive the mathematical relationship between the reconfigurability index and four crucial instants during the CR process. Based on this, the CR instant is optimised by maximising the reconfigurability index. Finally, the effectiveness of the proposed method is illustrated through an example. The results show that by enhancing the time management efficiency during the CR process, the limited resources can be economised to some extent.

本文旨在提出一种优化具有附加执行器故障的航天器控制系统的控制器重构（CR）瞬间的方法。由于严重的资源限制，航天器在轨道上处理故障是“昂贵的”。为了克服这些限制，我们尝试从时间管理的角​​度降低 CR 成本。该方法的基本思想是提出可重构性评价指标，通过 CR 措施量化故障系统维持可接受性能的能力，进而推导出可重构性指标与 CR 过程中四个关键时刻的数学关系。在此基础上，通过最大化可重构性指标来优化CR时刻。最后，通过一个例子说明了所提出方法的有效性。