scholarly journals The Coupling Characteristic Investigation of Double-Gimbal Magnetically Suspended Control Moment Gyro Used on Agile Maneuver Spacecraft

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Peiling Cui ◽  
Jian Cui ◽  
Qian Yang ◽  
Shiqiang Zheng
Keyword(s):  
Dynamic Model ◽  
Attitude Control ◽  
Magnetic Bearing ◽  
Nonlinear Coupling ◽  
Spacecraft Motion ◽  
Inertial Coupling ◽  
Control Moment ◽  
Bearing Force ◽  
Coupling Characteristic ◽  
Control Moment Gyro

Double-gimbal magnetically suspended CMG is a novel attitude control actuator for the agile maneuver spacecraft. Taking the double-gimbal magnetically suspended control moment gyro used on agile maneuver spacecraft as the research object, the dynamic model of the magnetically suspended rotor, the inner gimbal, and the outer gimbal of double-gimbal magnetically suspended control moment gyro is built. The nonlinear coupling characteristic between the rotor, the gimbal, and the spacecraft is given. It can be seen that the motion of magnetically suspended rotor does not only rely on magnetic bearing force but also suffer from the influence of gimbal servo system and spacecraft motion. The coupling torque includes the gyro coupling torque and the inertial coupling torque. The work in this paper provides the foundation for further studies.

Robust Nonlinear Combined Attitude Control Algorithm Using Control Moment Gyro for Agile Satellites

2016 ◽  
Author(s):  
Mohamed A. Elkhayat ◽  
Yehia Elhalwagy ◽  
Ahmed Yehia ElRaffie ◽  
Gamal Ahmed Elnashar
Keyword(s):  
Attitude Control ◽  
Control Algorithm ◽  
Control Moment ◽  
Control Moment Gyro

scholarly journals Design and Implementation of 3U CubeSat Platform Architecture

2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Sua Song ◽  
Hongrae Kim ◽  
Young-Keun Chang
Keyword(s):  
Attitude Control ◽  
Electrical Power ◽  
Electrical Power System ◽  
Main Concept ◽  
Ir Camera ◽  
Platform Architecture ◽  
Control Moment ◽  
Modular Concept ◽  
And Performance ◽  
Control Moment Gyro

This paper describes the main concept and development of a standard platform architecture of 3U Cube Satellite, whose design and performance were implemented and verified through the development of KAUSAT-5 3U CubeSat. The 3U standard platform is built in 1.5U size and developed as a modular concept to add and expand payloads and attitude control actuators to meet the user’s needs. In the case of the electrical power system, the solar panel, the battery, and the deployment mechanism are designed to be configured by the user. Mechanical system design maximizes the electrical capability to accommodate various payloads and to integrate and miniaturize EEE (Electrical, Electronic, and Electromechanical) parts and subsystem functions/performance into limited-size PCBs. The performance of KAUSAT-5 adopting standard platform was verified by mounting the VSCMG (Variable Speed Control Moment Gyro), which is one payload for technical demonstration, at the bottom of the platform and the infrared (IR) camera, which is the other payload for science mission, on the top. The 3U CubeSat equipped with the electronic optical camera is under development implementing the standard platform to reduce development cost and schedule by minimizing additional verification.

Research on method for adaptive imbalance vibration control for rotor of variable-speed mscmg with active-passive magnetic bearings

2016 ◽  
Vol 23 (2) ◽  
pp. 167-180 ◽  
Author(s):  
Peiling Cui ◽  
Jingxian He ◽  
Jiancheng Fang ◽  
Xiangbo Xu ◽  
Jian Cui ◽  
...  
Keyword(s):  
Vibration Control ◽  
Attitude Control ◽  
Control Method ◽  
Magnetic Bearing ◽  
Magnetic Bearings ◽  
System Stability ◽  
Variable Speed ◽  
Control Moment ◽  
Vibration Compensation ◽  
Main Factor

Imbalance vibration control for rotor is the main factor affecting attitude control performance for satellite using magnetically suspended control moment gyro (MSCMG). The method for adaptive imbalance vibration control for the rotor of variable-speed MSCMG with active-passive magnetic bearings is investigated in this paper. Firstly, on the basis of feedforward compensation, a rotor model for the imbalance vibration of variable-speed MSCMG with active-passive magnetic bearings is built, and the main factor affecting imbalance vibration compensation is also analyzed. Then, power amplifier parameter modifier with control switches is designed to eliminate the effects of time-varying parameters on the imbalance vibration compensation precision. The adaptive imbalance vibration control based on this modifier not only has high compensation precision, but also can control the frequency of parameter adjustment according to the compensation precision. Besides, since the passive magnetic bearing displacement stiffness of the rotor of variable-speed MSCMG with active-passive magnetic bearings cannot be obtained accurately, displacement stiffness modifier is employed. Finally, stability analysis is made on the imbalance vibration control system, and the range of rotation speed to ensure system stability is derived. Simulation results show that, imbalance vibration control method proposed in this paper can suppress the imbalance vibration of the rotor of variable-speed MSCMG with active-passive magnetic bearings effectively and has high precision.

scholarly journals Spacecraft Attitude Control Using Control Moment Gyro Reconfiguration

2014 ◽  
Vol 23 (3) ◽  
Author(s):  
Kanthalakshmi SRINIVASAN ◽  
Deepana GANDHI ◽  
Manikandan VENUGOPAL
Keyword(s):  
Attitude Control ◽  
Spacecraft Attitude ◽  
Spacecraft Attitude Control ◽  
Control Moment ◽  
Control Moment Gyro
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