Study of a New High Frequency Moving Coil Linear Force Motor for Electro Hydraulic Servo Valve

doi:10.4028/www.scientific.net/AMR.619.270

CORC > 兰州理工大学 > 兰州理工大学

	Study of a New High Frequency Moving Coil Linear Force Motor for Electro Hydraulic Servo Valve
	Chen, Jun Hui; Yang, Feng Yu
	2013
关键词	linear force motor servo valve Halbach Array electromagnetic force
卷号	619
DOI	10.4028/www.scientific.net/AMR.619.270
页码	270-274
英文摘要	There are some problems in moving coil linear motor for Electro-hydraulic servo valve, such as big weight, small electromagnetic force, long response time and small bandwidth. After simulation analysis on permanent magnet placement and permanent magnet magnetization direction, it is found that distribution of magnetic field lines is uneven, magnetic flux density is low, and magnetic field lines are not vertical with the coil current direction. To solve these problems, a new type of linear force motor with 5 rings stack Halbach permanent magnet array structure is put forward. Through using the new structure, the weight and volume of motor can be reduced, and the electromagnetic force can be increased. Simulation results show that for the new structure, under the coil displacement change, the output electromagnetic force changes little and can maintain good linearity. Using permanent magnet with same volume, the electromagnetic force produced by new force motor is 2.5 times as it is produced by current motor. If the electromagnetic forces produced by two structures are same, the step response time of new type can be decreased of 14.3%, and the bandwidth can be improved to 2 times.
会议录	HYDRAULIC EQUIPMENT AND SUPPORT SYSTEMS FOR MINING
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Materials Science ; Mining & Mineral Processing
WOS记录号	WOS:000318459700060
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/36879]
专题	兰州理工大学能源与动力工程学院
通讯作者	Chen, Jun Hui
作者单位	Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jun Hui,Yang, Feng Yu. Study of a New High Frequency Moving Coil Linear Force Motor for Electro Hydraulic Servo Valve[C]. 见:.