Fractional Order Modeling and Control of Flexible Satellite

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Hosseini, Masoud | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 52608 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Assadian, Nima
Abstract:
In recent decades the structure of space systems has gained more complexity due to the development of space technology. Usage of larger structure in spacecraft could cause undesirable structural vibration. mNeglecting this phenomena would affect the performance of satellite subsystems specially the accuracy of satellite control subsystem. By implementing fractional order calculus in modeling of flexible satellite, the damping effect could be modeled better than classical damping model. Also using fractional order integrator and differentiator operator will increase the performance of control subsystem. In this research, the fractional order calculus has been used in modeling and control of flexible satellite. For modeling of flexible satellite, the assumed mode method has been implemented for planar and spatial dynamic simulation. Then a fractional order damping model has been introduced and finally, using fractional operators, a comparison between classical controllers and fractional controllers has been presented
Keywords:
Flexible Satellites ; Fractional Order Model ; Fractional Order Controller ; Satellite Attitude Control