| 细胞化卫星分布式角动量平衡力矩分配算法 |
| |
| 引用本文： | 刘伟星,耿云海,吴宝林.细胞化卫星分布式角动量平衡力矩分配算法[J].宇航学报,2023,44(1):62-72. |
| |
| 作者姓名： | 刘伟星 耿云海 吴宝林 |
| |
| 作者单位： | 哈尔滨工业大学航天学院，哈尔滨 150001 |
| |
| 基金项目： | 国家自然科学基金（61873312；61903214） |
| |
| 摘 要： | 针对细胞化卫星姿态控制系统中细胞模块数量多、控制器细胞通信压力大的问题，提出了一种分布式控制力矩分配算法。该力矩分配算法先将力矩分配问题转化为带耦合等式约束的凸优化问题，然后通过分布式的方式求解该优化问题。在力矩分配过程中，控制器细胞只需要提供期望力矩，因此降低了通信压力。同时，该算法在优化目标函数中引入角动量能力因子，使飞轮细胞可以根据自身的角动量水平决定其力矩输出。数值仿真结果表明，该分布式分配算法可以保证分配后的力矩与期望力矩相等，且实现了平衡飞轮系统角动量的目的，进而可以通过卸载部分细胞的角动量来卸载整个飞轮系统的角动量。
|
| 关 键 词： | 细胞化卫星 分布式控制力矩分配 耦合约束 角动量平衡 |
| 收稿时间： | 2022-05-21 |
Distributed Control Allocation with Momentum Balance for Cellularized Satellite |
| |
| LIU Weixing,GENG Yunhai,WU Baolin.Distributed Control Allocation with Momentum Balance for Cellularized Satellite[J].Journal of Astronautics,2023,44(1):62-72. |
| |
| Authors: | LIU Weixing GENG Yunhai WU Baolin |
| |
| Affiliation: | School of Astronautics, Harbin Institute of Technology, Harbin 150001, China |
| |
| Abstract: | To reduce the communication burden of the controller cell, a distributed control allocation method is proposed for the cellularized satellite attitude control system which includes a large number of flywheel cells. The control torque allocation problem is transformed into a convex optimization problem and then solved in a distributed manner. In the allocation process, the controller cell only needs to provide the desired torque, thus reducing the communication burden. Meanwhile, the angular momentum energy factor is introduced in the optimization objective so that the flywheels decide their outputs by their angular momentum levels. The numerical simulation results show that the distributed allocation algorithm can ensure the equivalence of the output torque and the desired torque, and achieve the purpose of balancing the angular momentum of the flywheel system, and then the angular momentum of the entire flywheel system can be offloaded by offloading the angular momentum of some cells. |
| |
| Keywords: | Cellularized satellite Distributed control torque allocation Coupling constraint Momentum balance |
|
| 点击此处可从《宇航学报》浏览原始摘要信息 |
|
点击此处可从《宇航学报》下载全文 |
