| This subject is studied according to advisor's project "The theory of switched reluctance motor nonlinear vibration and the research of control strategy", which is subsidized by the National Natural Science Fund. This thesis makes some studies in the aspect of SRD's control parameter optimization, improvement of control strategy and research of stator vibration of SR motor. Moreover, some conclusions are obtained. These conclusions and research findings will give certain help to further study of SRD.Based on quasi-linear model of SR motor, the influences of angle on phase current, output power, energy loss are analyzed. An optimum result of angle is produced in accordance to given target.Fuzzy controller with self-adaptive proportion is constructed through modifying normal fuzzy controller. Accordingly, system's performance is improved. Furthermore, a direct digital control system of SR motor based on this controller is designed by using Intel 80C196KB.Natural frequency of SR motor's stator is calculated respectively by two methods as numerical calculation and experimental analysis. The method of mechanical impedance to calculate stator's natural frequency is given, and so is the flow of modal analysis. These results are compared. It illuminates that the method of mechanical impedance is easier than others, and also it is a calculating approach with comparative precision. |
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