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Title

DESIGN OF AN ATTITUDE CONTROL AND POWER MANAGEMENT SYSTEM FOR A REMOTE SENSING SATELLITE CONSIDERING OF REACTION WHEELS SATURATION EFFECTS

Pages

 Start Page 39 | End Page 45

Abstract

 In this paper we are going to design an ATTITUDE CONTROL system for a Stereo-Imaging Remote Sensing SATELLITE using of four pyramidal REACTION WHEELs. In this method, in order to provide the power requirements of the SATELLITE by the energy stored in the REACTION WHEELs, a power management law will be designed and added to the ATTITUDE CONTROL law to charge and discharge the wheels according to the preset profiles. Therefore, ATTITUDE CONTROL and power management of the SATELLITE will be carried out simultaneously. In this method, while the SATELLITE is in the light and the batteries are charged, the speed of the wheels increase up to the limited speeds and while the power requirements of the subsystems are inadequate, Power will be returned to the subsystems by reducing the speed of the wheels. The design of this system has been conducted to consider the effects of saturation of the wheels to prevent attitude deviations of SATELLITE while power management is done. Simulation results show the good performance of the designed ATTITUDE CONTROL and POWER MANAGEMENT SYSTEM of the SATELLITE.

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