| Summary: | 碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 90 === Abstract
This thesis studies the design of a magnetic vibration absorber, using electromagnetic force to suspend gravity force and isolate vibration force from the system. The magnetic suspension system possesses non-mechanical contact, zero friction, and miniature characteristics, it presents vibration absorber performance of low noise, high efficiency and high reliability in operation. The overall vibration absorber, including vibration absorber hardware, excitation coil, current driver, position sensor and controller, is a typical electro-mechanical integration system. In this thesis, the design concept and method of the proposed hybrid magnetic vibration absorber using electromagnetic coil and permanent magnet is discussed, including system hardware design, force model analysis, controller design and closed-loop performance analysis. The hardware construction, including position sensing, feedback controller, current driver in analog circuits are implemented with tests. Finally, a series of experiment is carried out to verify the design system feasibility, and its performance under different load conditions. The goal of this active vibration absorber is designed for small vibrations in 2~3 N with a control error under 0.5 mm.
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