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This paper considers the problem of the multi-target attitude tracking control for spacecraft formation flying. A robust multi-target attitude tracking control using adaptive sliding mode technique is developed, where the attitude of the leader spacecraft is represented by the Euler parameter to avoid the singular points. It is assumed that the parameters of the system and the disturbances from space...
This paper is mainly about sensorless brushless DC motor (BLDCM) controlling system based on MRAC method, which substitutes the traditional controlling system, the problem of hall tracking err when running at low speed is solved. In addition, a new Hall sample circuit is designed and analyzed. By the virtue of overcoming the disturbance of hall that causes the wrong actions of the controlling circuit,...
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