Abstract Any vehicle propelled by solid rocket motors (SRMs) must include an attitude control system capable of dealing with the torque generated by thrust misalignment. In order to expand the application of SRMs on CubeSats, an attitude control system utilizing moving mass actuators is discussed. The present research develops an eight-degree-of-freedom simulation model of a 2U CubeSat with two moving mass actuators. That model also considers the influence of propellant combustion processes. By analyzing the model disturbance source and systematic coupling, the key layout parameters are designed and a simplified control model is proposed. The controller is derived based on a combination of backstepping and sliding mode techniques. An orbit maneuver from 300km circular orbit to 300 and 500km elliptical orbit using this attitude control system is verified.

中文翻译：

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使用移动质量驱动器的立方体卫星建模和姿态控制

摘要 任何由固体火箭发动机 (SRM) 推进的飞行器都必须包括一个姿态控制系统，能够处理推力错位产生的扭矩。为了扩展 SRM 在 CubeSats 上的应用，讨论了一种利用移动质量执行器的姿态控制系统。本研究开发了具有两个移动质量执行器的 2U 立方体卫星的八自由度仿真模型。该模型还考虑了推进剂燃烧过程的影响。通过分析模型扰动源和系统耦合，设计了关键布局参数，并提出了简化控制模型。控制器是基于反推和滑模技术的组合推导出来的。