| Recent years, the research of diamagnetic levitation has been developed and used in many high-tech fields in foreign countries. The diamagnetic levitation in normal temperature has many good qualities such as credibility, small volume, and light weight, but it is also probable to reduce the vibration and the noise which are produced in the motor movement process. It has several merits of long life, less mechanical friction, need not lubrication etc. So this technology is significance in the field of engineering technology.This dissertation introduces the basic structure, mathematical model, function mode and control method of the micro SRM of Diamagnetic Levitation. The SRM control system includes hardware and software. They both are designed in detail after motor manufacture. The hardware, made up of power circuit, drive circuit, sample circuit (voltage and current), protection circuit and controller based on TMS320LF2407A DSP is close and reliable. During the course of software design, chop manner is determined first, and then these flow charts of the main program and several crucial interrupt sub-program are given. According to classical control theory, the current-loop and speed-loop are designed respectively from inner to outer by rule.Finally, the experimental results indicate the acceptable performance of the motor controlled by the board. We can come to a conclusion that the motor and control system presented and designed in this thesis could meet the requirement of the task.
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