High precision control design for SGCMG gimbal servo system

Ming Lu, Yuewei Hu, Yingguang Wang, Gang Li, Dengyun Wu, Jiyang Zhang
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引用次数: 8

Abstract

Single gimbal control moment gyroscope (SGCMG) is used as the actuator of attitude control system for modern satellites. High precision control of the SGCMG gimbal servo system is difficult to achieve because of the existing multi-source and strong coupling disturbances. In this paper, multi-source disturbances are modeling, meanwhile, a high precision controller is designed, including a variable structure controller (VSC) and an adaptive feedforward controller (AFC). VSC guarantees steadiness and robustness of the system utilizing its characteristics of invariance and robustness, and AFC specially compensates the high frequency disturbances created by unbalance and vibration of the high speed rotor, utilizing its characteristics of adaptive close-loop regulation. Simulation results show that the proposed method attenuates the multi-source and strong coupling disturbances more efficient comparing to the existing methods, and can achieve high precision control.
SGCMG云台伺服系统高精度控制设计
单云台控制力矩陀螺仪(SGCMG)是现代卫星姿态控制系统的执行器。由于存在多源、强耦合干扰,难以实现SGCMG框架伺服系统的高精度控制。本文对多源扰动进行建模,同时设计了高精度控制器,包括变结构控制器(VSC)和自适应前馈控制器(AFC)。VSC利用其不变性和鲁棒性保证系统的稳定性和鲁棒性,AFC利用其自适应闭环调节特性补偿高速转子的不平衡和振动所产生的高频干扰。仿真结果表明,与现有方法相比,该方法能有效地衰减多源强耦合干扰,实现高精度控制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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