Paper Info
Title
Modeling and Analysis of Micro-Spacecraft Attitude Sensing with Gyrowheel.
Abstract
This paper proposes two kinds of approaches of angular rate sensing for micro-spacecraft with a gyrowheel (GW), which can combine attitude sensing with attitude control into one single device to achieve a compact micro-spacecraft design. In this implementation, during the three-dimensional attitude control torques being produced, two-dimensional spacecraft angular rates can be sensed from the signals of the GW sensors, such as the currents of the torque coils, the tilt angles of the rotor, the motor rotation, etc. This paper focuses on the problems of the angular rate sensing with the GW at large tilt angles of the rotor. For this purpose, a novel real-time linearization approach based on Lyapunov's linearization theory is proposed, and a GW linearized measurement model at arbitrary tilt angles of the rotor is derived. Furthermore, by representing the two-dimensional rotor tilt angles and tilt control torques as complex quantities and separating the twice periodic terms about the motor spin speed, the linearized measurement model at smaller tilt angles of the rotor is given and simplified. According to the respective characteristics, the application schemes of the two measurement models are analyzed from the engineering perspective. Finally, the simulation results are presented to demonstrate the effectiveness of the proposed strategy.
Year
DOI
Venue
2016
10.3390/s16081321
SENSORS
Keywords
Field
DocType
gyrowheel,micro-spacecraft angular rate sensing,real-time Lyapunov linearization,complex quantity,static measurement,dynamic measurement
Lyapunov function,Torque,Control theory,Attitude control,Rotor (electric),Engineering,Periodic graph (geometry),Linearization,Control moment gyroscope,Spacecraft
Journal
Volume
Issue
Citations 
16
8.0
1
PageRank 
References 
Authors
0.38
5
4
Name
Order
Citations
PageRank
Xiaokun Liu122.81
Hui Zhao252.87
Yao Yu37822.67
Fenghua He46811.36