Design and Control of Piezoelectric Vibration-Suppressed Workholding Platform
| Autor: | Cheng-WeiYeh, 葉宸瑋 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 The thesis is aimed to design an active vibration–suppressed workholding platform (AVSWP) for a milling machine to cooperate with an embedded cylindrical array magnetic actuator (ECAMA). As to metal cutting, vibration is one of the major factors which affect the quality of finished workpieces. As long as the excessive vibration is present during milling process, the workpiece’s surface roughness is downgraded. Therefore, this research proposes an active vibration–suppressed workholding platform to suppress vibration in milling process. To achieve this goal, the milling dynamics and the vibration source in milling process are studied. Active noise feedback control based on FXLMS (Filtered-X Least Mean Square) algorithm is applied to achieve satisfactory performance in terms of vibration suppression. An experimental setup is established to verify the efficacy of the active noise feedback controller by accelerometers, signal processing modules (SPMs) and cooperation of two piezoelectric actuators. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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