| Summary: | 碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 94 === The hybrid magnetic suspension vibrator is a kind of magnetic suspension system of repulsive and attractive type using the combination of permanent magnet and electromagnet. Many studies used PID controller to control the system in the past. However, the PID controller can not easily be implemented by its system modeling and control gain tuning. For better performance, the fuzzy logic controller (FLC) is applied to control the magnetic vibrator system for better vibrator effect comparing to PID controllers.
This thesis surveys all kinds of method of magnetic force generation for magnetic suspension, integrates mechanical and electrical parts into the proposed vibrator system, and applies PWM (Pulse Width Modulation) technique to drive the magnetic suspension vibrator with lower coil temperature. On the controller aspect, this thesis uses PC and LabView software to manipulate the PID controller with FLC, and successfully combines software with hardware to realize the closed loop control.
On the experiments of vibrator performance, the vibrator operation in different effects for fixing position speed, resisting step response, with resisting impact. The results show that the FLC can have better effect than the PID controller on fix position with step response experiments. Although, the resisting impact effect for FLC turns to be poor than the PID controller, but concerning on position precision is still merited.
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