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J4  2012, Vol. 46 Issue (2): 309-314    DOI: 10.3785/j.issn.1008-973X.2012.02.020
    
Study of high-pressure high-speed on-off solenoid using
permanent magnet shield
MAN Jun 1, DING Fan 1, LI Qi-peng 1,2, DA Jing 1,3, SHAO Sen-yin1,4
1. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, China;
2. School of Mechanical and Automotive Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China;
3. Department of Watercraft Engineering, Zhenjiang watercraft college, Zhenjiang, 212003, China;
4. Armament Department of troop 92132
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Abstract  

To increase electromagnetic force and to speed up response time, this paper proposed a high-pressure high-speed on-off solenoid using permanent magnet (PM) shield. By reducing flux leakage, the rare-earth NdFeB PM shield improves the dynamic response. A dynamic model of solenoid based on finite element analysis was established. The results from a simulation based on the model were verified by those from experiments while response error was 3.2%. The dynamic simulation analysis of the main structure parameters — such as PM length, PM thickness, PM direction, basin height, pressure ring thickness, nonmagnetic spacer length, front ring angle, and back ring angle — were performed for the PM shield type solenoid. Based on optimal design parameters selection and engineering practice, the response time of the high-pressure long-stroke high-speed solenoid with PM shield is 2.20 ms with a stroke of 0.6 mm.



Published: 20 March 2012
CLC:  TH 137  
Cite this article:

MAN Jun , DING Fan , LI Qi-peng , DA Jing , SHAO Sen-yin. Study of high-pressure high-speed on-off solenoid using
permanent magnet shield. J4, 2012, 46(2): 309-314.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2012.02.020     OR     http://www.zjujournals.com/eng/Y2012/V46/I2/309


永磁屏蔽式耐高压高速开关电磁铁

为了提高电磁力、加快响应速度,提出一种永磁屏蔽式耐高压高速开关电磁铁,采用NdFeB稀土永磁材料作为磁屏蔽元件,减少漏磁并加快了动态响应.基于有限元方法建立电磁铁的动态数学模型,并通过实验进行验证,实验与仿真基本吻合,响应误差为3.2%,验证模型的有效性.在此基础上,对该高速开关电磁铁进行动态仿真,探讨永磁体长度、厚度、激磁方向,盆口高,耐压环厚度,隔磁片长度,前隔磁角和后隔磁角等结构参数对响应时间的影响规律.结合实际设计要求,结果表明,采用优化后的结构参数研制的永磁屏蔽式耐高压高速开关电磁铁在0.6 mm行程时的响应时间为2.20 ms.

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