Abstract
Since nano-spacecraft are small, low cost and do not undergo the same rigor of
testing as conventional spacecraft, they have a greater risk of failure. In this paper we address the problem of attitude control of a nano-spacecraft that experiences different types of faults. Based on the traditional quaternion feedback control method, an adaptive fault-tolerant control method is developed, which can ensure that the control system still operates when the actuator fault happens. This paper derives the fault-tolerant control logic under both actuator gain fault mode and actuator deviation fault mode. Taking the parameters of the UKube-1 in the simulation model, a comparison between a traditional spacecraft control method and the adaptive fault-tolerant control method in the presence of a fault is undertaken. It is shown that the proposed controller copes with faults and is able to complete an effective attitude control manoeuver in the presence of a fault.
testing as conventional spacecraft, they have a greater risk of failure. In this paper we address the problem of attitude control of a nano-spacecraft that experiences different types of faults. Based on the traditional quaternion feedback control method, an adaptive fault-tolerant control method is developed, which can ensure that the control system still operates when the actuator fault happens. This paper derives the fault-tolerant control logic under both actuator gain fault mode and actuator deviation fault mode. Taking the parameters of the UKube-1 in the simulation model, a comparison between a traditional spacecraft control method and the adaptive fault-tolerant control method in the presence of a fault is undertaken. It is shown that the proposed controller copes with faults and is able to complete an effective attitude control manoeuver in the presence of a fault.
Original language | English |
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Pages | Paper IAA-AAS-DyCoSS2-14-10-02 |
Number of pages | 13 |
Publication status | Published - 24 Mar 2014 |
Event | 2nd Conference on Dynamics and Control of Space Systems, DyCoSS2 - Rome, Italy Duration: 24 Mar 2014 → 26 Mar 2014 |
Conference
Conference | 2nd Conference on Dynamics and Control of Space Systems, DyCoSS2 |
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Country/Territory | Italy |
City | Rome |
Period | 24/03/14 → 26/03/14 |
Keywords
- nano-spacecraft
- attitude control
- quaternion feedback control method
- adaptive control systems
- adaptive fault-tolerant control method
- modelling and simulation