| Nowadays , flywheel is an important and absolutely necessary implement part in long-life, high precision, high stabilization tri-axes attitude stabilization satellites which were launched in most countries. Making use of flywheel doing attitude control has unassimilated superiority to the original jet attitude control. It is not only saving fuek minishing satellite avoirdupois, high-reliability, but also unpollution, long-life. Then ,more and more countries have made use of flywheel doing attitude control. Flywheel energy storage which was applied successfully in many fields (such as electric power system, UPS, mix-power motorcycle, etc) is a high effect and new type energy storage technology. With the flying development of flywheel technology, power electronics technology, intelligent control technology, integrating satellite energy storage and attitude control which making use of high speed flywheel system grows to maturity. This has remarkable meaning to advancing satellite performance in the mass, then attached high importance by the aviation and spaceflight departments and become a preceding problem in the way of this research. This problem whichcomes down to national "863"item--"the research of light-duty flywheel inenergy storage and attitude control technology", is a search before-study task.The master task of this paper is to discussing the control system of satellite energy storage and attitude control double-duty flywheel, researching the troubles arose by energy storage system in satellite attitude control system and the satellite attitude control problem in the state of flywheel energy feedback. This task adopts flywheel system which is droved by BLDCM (brushless direct current motor), analyses the theory of flywheel energy storage, energy feedback, attitude control and attitude measure, based the math model of flywheel energystorage system, the math model of gyro, the model of rigid body satellite attitude control dynamics and kinematics , the model of satellite attitude control in the state of troubles, studying the double-closed loop timing control system of BLDCM, energy feedback circuitry system and the drive power supply of gyro system. Because tri-axes double-direction flywheel energy storage & attitude control system is a complicated, nonlinearity , strong-coupling, MIMO and uncertainty parameter system, then this paper bases the model of satellite attitude control in the state of flywheel energy feedback troubles applying classical PID control system and fuzzy logic control, analyses the model, emulates system by Matlab. The result proves that the troubles aroused by flywheel energy storage system are minished by control theory new ways.By researching the paper, flywheel energy storage system is applied in satellite will to be true. That Flywheel energy storage system substitutes for accumulator will minish volume and weight of satellite and advance performance and payload capability of satellite. That is significance to the development of satellite technology.
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