Practical Steering Law for Small Satellite Energy Storage and Attitude Control

2009 ◽  
Vol 32 (6) ◽  
pp. 1898-1911 ◽  
Author(s):  
David J. Richie ◽  
Vaios J. Lappas ◽  
Bong Wie
Keyword(s):  
Energy Storage ◽  
Attitude Control ◽  
Small Satellite ◽  
Steering Law

Three-Axis Attitude Control Performance of a Small Satellite Using Control Moment Gyroscope

2014 ◽  
Vol 629 ◽  
pp. 286-290
Author(s):  
Mohd Badrul Salleh ◽  
Nurulasikin Mohd Suhadis
Keyword(s):  
Attitude Control ◽  
Control Algorithm ◽  
Control Law ◽  
Small Satellite ◽  
Control Moment Gyroscope ◽  
Control Approach ◽  
Control Moment ◽  
Control Moment Gyroscopes ◽  
Steering Law ◽  
Mission Operation

In this paper, a three-axis attitude control of a small satellite employing control moment gyroscope (CMG) is presented. A four single gimbal control moment gyroscopes (4-SGCMG) cluster has been employed as the actuator and a proportional-derivative (PD) based attitude control approach has been utilized. The singularity robust (SR) steering law has been employed to investigate its capability in avoiding the singularity state of the CMG system with respect to the mission operation by setting the initial gimbal angle further from the singularity state. The presented control law was simulated in the MATLAB® SIMULINK® software. Results obtained from the simulation show the effectiveness of the control algorithm.

Design of Semi-Physical Simulation for Small Satellite by Virtual Display

2011 ◽  
Vol 130-134 ◽  
pp. 2684-2687 ◽  
Author(s):  
Kai Xu ◽  
Yan Lv ◽  
Guang Jin
Keyword(s):  
Control System ◽  
Real Time ◽  
Attitude Control ◽  
Physical Simulation ◽  
Simulation System ◽  
Space Environment ◽  
Small Satellite ◽  
Attitude Control System ◽  
Actual Environment ◽  
Virtual Display

Semi-physical simulation of attitude control system is the more synthetically test and verify for designing of small satellite control system. It is an important means of small satellite development. However, the results of current semi-physical simulation system have a lot of non-intuitive. Compare with the actual environment, the simulation environment still has striking disparity. So the shortcomings affect precision of simulation. Based on the virtual display technology, the group semi-physical simulation system has been constructed for attitude control of small satellite due to the combination with xPC real-time environment, the simulation computer, high-precision single-axis air-bearing turntable, reaction wheel, air thrust device, fiber gyroscopes, sensors synchronizer, power subsystem and wireless devices virtual display computer etc. Semi-physical simulation achieved the visual simulation in orbit and tracked new information of virtual environment of space into real-time simulation computer. Simulation results show that the simulation system for real-time attitude and orbit position of small satellite semi-physical simulation has an excellent display effect. At the same time, Real-time transfuse of orbit information provides a more accurate space environment simulation. The simulation system of small satellite attitude control to design and evaluate the more direct and convenient.

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