| Summary: | 博士 === 國立成功大學 === 航空太空工程學系碩博士班 === 94 === Magnetic suspension technology has become very mature for system design and application. There is no friction, contact or noise during operation. This dissertation presents a magnetic vibration actuator developed according to hybrid magnetic suspension design with feedback control. Magnetic field simulation is employed to establish system design parameters and identify the system characteristics for implementation. From simulation results, a system dynamic model is obtained for further design and fabrication. A prototype of the proposed hybrid magnetic vibration actuator design is made for experiments and performance verification. A closed-loop PID controller is implemented to improve vibration absorption performance under different conditions. Finally, we present another magnetic suspension actuator using hybrid magnetic configuration. Two permanent magnets are embedded into the stationary base and the motion support to give a spring effect in the mechanical system. An electromagnet is introduced to exert controllable force onto the motion support. The magnetic suspension actuator is designed to receive accurate position control to bring about changes in inclination angle in the ball-beam system. Under appropriate signal process and control algorithm, the metal ball can be controlled to any position on the beam. The control algorithm combines fuzzy control with PID controller to stabilize the performance of the ball and beam in real time. The proposed ball-beam system is verified by several experiments for its control performance. Finally, suggestions for further research are discussed.
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