Parameter design and drog force evaluation of piston in electromagnetic tubular pump

• Main Authors: Wang, Shao-Chuan, 王紹權
• Other Authors: Weng, Wei-Chu
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/wb3qe3

碩士 === 國立臺灣海洋大學 === 系統工程暨造船學系 === 102 === The thesis discusses a specific tubular pump designed for left ventricular assist device (LVAD). Such a device must be designed precisely when applied to save human being. The tubular pump is a tube winded with several coil sets outside and has a piston inside. The piston includes a permanent magnetic ring that is driven by the electromagnetic field generated by outside coil sets. This paper focuses on how to optimally design the permanent magnetic ring to promote the tubular pump performance. There are two parts: one is the optimization of magnetic ring design by parameter analysis, the other is the drog force evaluation of the magnetic ring during its reciprocation. In the paper, three key design parameters are identified and the best design is proposed through mutual association and evaluation. Moreover, a proper function of drog force coefficient is designed and proposed. The results show the proposed function of drog force coefficient properly makes the magnetic ring moving like the experimental results. At the end, this paper gives the analysis showing that the added permeability metals increase the electromagnetic force .It is suggested to add permeability metals outer instead of inner the coil sets.