Design and Experiment of Linear Motor and Integrated Bi-Directional Proportional Solenoid

• Main Authors: Bo-Jyun Liao, 廖柏鈞
• Other Authors: Jyh-Chyang Renn
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/90937577390056651540

碩士 === 國立雲林科技大學 === 機械工程系碩士班 === 97 === In this paper, a novel linear motor for fluid power valve technology is proposed and realized. The most significant feature of the new linear motor is the movable pair of permanent magnets that is directly integrated into the output plunger of armature. Such a novel design enables the linear output force / stroke characteristic. On the other hand, the pair of permanent magnets in a commonly-used linear motor is generally inserted into the stator and hence is not movable. Furthermore, the linear output force / stroke curve can not be achieved. In this paper, the electro-magnetic software FLUX2D and FLUX3D are utilized to develop this new linear motor. The experimental results show that the linear effective stroke is around ±1 mm and the maximal output force is ± 16 N for the rated excitation current of ±1 A. It is expected that such a new linear motor may find some potential application fields in the fluid power valve technology in the future. The second part of this research is to design the integrated bi-directional proportional solenoid. The main point of design is the improvement of the traditional single-acting proportional solenoid. It includes two coils, magnetic stainless steel and non-magnetic section. The armature would moved by magnetizing one of the coils. To design and analysis of this research utilizes FLUX2D and FLUX3D to simulate the bi-directional proportional solenoid’s force / stroke curve. The simulation results show that the linear effective stroke is around ±1.5 mm and the maximal output force is ± 19 N for the rated excitation current of ±1 A.