Emad Azadi; Seyed Ahmad Fazelzadeh; Mohammad Azadi
Volume 8, Issue 1 , April 2015, , Pages 43-51
Abstract
In this paper, vibration suppression and maneuver control of a smart flexible satellite moving in acircular orbit are studied. The satellite is considered as a rigid hub and two flexible appendages withpiezoelectric layersattached on them as actuators. The satellite is moving in a circular orbit and ...
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In this paper, vibration suppression and maneuver control of a smart flexible satellite moving in acircular orbit are studied. The satellite is considered as a rigid hub and two flexible appendages withpiezoelectric layersattached on them as actuators. The satellite is moving in a circular orbit and has pitch angle rotation maneuver. The heat radiation effects on the appendages are considered. When the satellite is rotating around the Earth, the appendages experience periodic heating and cooling in the sunlight and shadow region of the Earth with the variation of the thermal environment.These nonlinear transient heat equations depends on the satellite maneuver angle and the panels vibrations, too. The thermally induced vibrations of the appendages and the heat transfer equation are coupled and should be solved simultaneously.Aninverse dynamic controller is proposed to control the satellite maneuver and appendage vibrations. Finally, the whole system is simulated and the effects of the heat radiation and piezoelectric actuators on the response of the system are studied. Also, the effectiveness and the capability of the controller are analyzed.
