Fault tolerant sliding mode control for a nanosatellite

This paper describes a nanosatellite attitude control being able to perform fault tolerant control to increase a reliability of a nanosatellite. A fault-tolerant sliding mode controller is used for a nanosatellite using four reaction wheels as a set of actuators. The fault-tolerant sliding mode cont...

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Bibliographic Details
Main Authors: Miri Shin, Chul Woo Kang, Junkyu Lim, Chan Gook Park
Format: Conference Proceeding
Language:English
Subjects:
Actuators
Attitude control
Fault tolerance
Fault tolerant attitude control
Fault tolerant systems
Nanosatellite
Satellites
Sliding mode control
SNUSAT-1
Wheels
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Summary:This paper describes a nanosatellite attitude control being able to perform fault tolerant control to increase a reliability of a nanosatellite. A fault-tolerant sliding mode controller is used for a nanosatellite using four reaction wheels as a set of actuators. The fault-tolerant sliding mode controller is designed to perform the rest-to-rest maneuver of a satellite system. The actuator fault reflects the degradation of the actuation effectiveness. The Lyapunov theorem is used to analyze the system stability. In computer simulations, we use SNUSAT-1 made in Seoul National University as an applied nanosatellite. The control scheme of a nanosatellite is verified under the actuator fault situation that one reaction wheel of four reaction wheels is fault as well as the normal situation that four reaction wheels are healthy.