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Sensors 2012, 12(12), 16964-16987; doi:10.3390/s121216964

Research on Modeling of the Agile Satellite Using a Single Gimbal Magnetically Suspended CMG and the Disturbance Feedforward Compensation for Rotors

1,2,* and 1,2,3
1
School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China
2
Science and Technology on Inertial Laboratory, Beijing 100191, China
3
Research and Design Centre, China Academy of Launch Vehicle Technology, Beijing 100076, China
*
Author to whom correspondence should be addressed.
Received: 9 May 2012 / Revised: 20 November 2012 / Accepted: 22 November 2012 / Published: 12 December 2012
(This article belongs to the Section Physical Sensors)

Abstract

The magnetically suspended Control Moment Gyroscope (CMG) has the advantages of long-life, micro-vibration and being non-lubricating, and is the ideal actuator for agile maneuver satellite attitude control. However, the stability of the rotor in magnetic bearing and the precision of the output torque of a magnetically suspended CMG are affected by the rapid maneuvers of satellites. In this paper, a dynamic model of the agile satellite including a magnetically suspended single gimbal control moment gyroscope is built and the equivalent disturbance torque effected on the rotor is obtained. The feedforward compensation control method is used to depress the disturbance on the rotor. Simulation results are given to show that the rotor displacement is obviously reduced.
Keywords: Control Moment Gyroscope; dynamic modeling; feedforward compensation; magnetic bearing Control Moment Gyroscope; dynamic modeling; feedforward compensation; magnetic bearing
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Cui, P.; Yan, N. Research on Modeling of the Agile Satellite Using a Single Gimbal Magnetically Suspended CMG and the Disturbance Feedforward Compensation for Rotors. Sensors 2012, 12, 16964-16987.

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