Control torque generation of a CMG-based small satellite with MTGAC system: a trade-off study

International Conference on Aerospace and Mechanical Engineering 2017

航空航天工程;机械制造

Salleh, M.B.^1 ; Suhadis, N.M.^1 ; Rajendran, P.^1 ; Mazlan, N.M.^1

School of Aerospace Engineering, Universiti Sains Malaysia, Penang, Nibong Tebal

14300, Malaysia^1

关键词: Compensation method;    Control performance;    Dynamic performance;    Low earth orbits;    Magnetic compensation;    Magnetic torquers;    Power requirement;    Simulation studies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/370/1/012045/pdf
DOI  :  10.1088/1757-899X/370/1/012045

学科分类：航空航天科学

来源: IOP

【 摘 要 】

In this paper, the gimbal angle compensation method using magnetic control law has been adopted for a small satellite operating in low earth orbit under disturbance toques influence. Three light weight magnetic torquers have been used to generate the magnetic compensation torque to bring diverge gimbals at preferable angle. The magnetic control torque required to compensate the gimbal angle is based on the gimbal error rate which depends on the gimbal angle converging time. A simulation study has been performed without and with the MTGAC system to investigate the amount of generated control torque as a trade-off between the power consumption, attitude control performance and CMG dynamic performance. Numerical simulations show that the satellite with the MTGAC system generates more control torques which leads to the additional power requirement but in return results in a favorable attitude control performance and gimbal angle management.