Intelligent Control For Large Angle Attitude Maneuver Of A Satellite

With the development of the aerospace technology, the requirement for satellite attitude control is getting stricter. In order to study new methods used in satellite attitude control, four kinds of controller are presented in this thesis: Quaternion Feedback Controller based on Lyapunov, Quaternion Feedback Fuzzy Controller, Quaternion Feedback Neural Controller and Quaternion Feedback Adptive Nero Fuzzy Controller. Taking the Attitude Maneuver Control as example, their performance in simulation is compared in this thesis.Firstly, Quaternion Feedback Controller based on Lyapunov is presented. As mature technology, this contol method is used in most of the onboard satellites. The design of the controller regularly and strongly depends on the math model of satellites. The capability of the controller is testfied through the simulation. Based on the structre of Quaternion Feedback Controller, ingelligent controller----- Quaternion Feedback Fuzzy Controller, Quaternion Feedback Neural Controller and Quaternion Feedback Neuro Fuzzy Controller are designed And their capability are testfied through simulation.From all of the discussed methods, we get the conclusions: the design of Quaternion Feedback Controller based on Lyapunov is regularly and strongly dependent on the math model of satellites; the Quaternion Feedback Fuzzy Controller is designed based on the language information and experience; the Quaternion Feedback Neural Controller takes on better intelligent and robost capability; and the Quaternion Feedback Adptive Nero fuzzy Controller is designed based on the strict theory foundation and takes on perfect control capability.