伺服阀充退磁装置实现机理及其试验
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摘要
介绍并分析了常用充退磁方法及其优缺点,依据相关工作机理完成了伺服阀充退磁装置研制,并进行了各型伺服阀磁钢组件的定压充磁、定流退磁及温度稳定性考核试验。试验数据表明,所研制的伺服阀用精密充退磁装置工作性能可靠,充磁和退磁参数稳定,充退磁效率和合格率得到了提高。
The paper introduced and analyzed the commonly used magnetizing and demagnetizing methods and their advantages and disadvantages.According to the relevant working mechanism,the magnetizing and demagnetizing apparatus on servo valve was completed.Then experiment was done under magnetization with constant voltage,demagnetization with constant current and temperature stability conditions,and it shows that the magnetizing and demagnetizing apparatus have reliable performances,stable magnetization and demagnetizing parameters,the effects and qualified rate was improved after adopting the magnetizing and demagnetizing way.
The paper introduced and analyzed the commonly used magnetizing and demagnetizing methods and their advantages and disadvantages.According to the relevant working mechanism,the magnetizing and demagnetizing apparatus on servo valve was completed.Then experiment was done under magnetization with constant voltage,demagnetization with constant current and temperature stability conditions,and it shows that the magnetizing and demagnetizing apparatus have reliable performances,stable magnetization and demagnetizing parameters,the effects and qualified rate was improved after adopting the magnetizing and demagnetizing way.
引文
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[5]刘艳丽,朱名日,刘巍.智能化充退磁装置的现状及发展趋势[J].电工材料,2007,(2):19-22.LIU Y L,ZHU M R,LIU W.Current status and development trend of intelligent apparatus for magnetization and demagnetization[J].Electrical Material,2007,(2):19-22(in Chinese).
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[7]柯锋,周永鹏,黄锦恩,等.PWM恒流充电系统的设计[J].电子技术应用,2002,28(3):43-44.KE F,ZHOU Y P,HUANG J E,et al.Design of constant current charging system by PWM[J].Application of Electronic Technique,2002,28(3):43-44(in Chinese).
[8]王鹏.定量充磁机充电系统的设计[D].河北大学,2011.WANG P.The design of the charging system of an quantitatively magnetizing machine[D].Hebei University,2011(in Chinese).
[9]KOLOTOV O S,MATYUNIN A V,MIRONETS O A,et al.A magnetizer for studying transient processes in magnets over a wide time interval[J].Instruments and Experimental Techniques,2004,47(6):817-820.
[2]FAN Y,HERMANN L,JAN R,et al.Characterization of CHAMP magnetic data anomalies:magnetic contamination and measurement timing[J].Measurement Science and Technology,2013,24(7):1-11.
[3]KATOH M,NISHIO K,YAMAGUCHI T.The influence of modeled B-H curve on the density of the magnetic leakage flux due to a flaw using yoke-magnetization[J].NDT&EInternational,2004,37(8):603-609.
[4]KAWASE Y,YAMAGUCHI T,MIMURA N,et al.Analysis of magnetizing process using discharge current of capacitor by 3-D finite-element method[J].IEEE Transactions on Magnetics,2002,38(2):1145-1148.
[5]刘艳丽,朱名日,刘巍.智能化充退磁装置的现状及发展趋势[J].电工材料,2007,(2):19-22.LIU Y L,ZHU M R,LIU W.Current status and development trend of intelligent apparatus for magnetization and demagnetization[J].Electrical Material,2007,(2):19-22(in Chinese).
[6]LEVI E,SOKOLA M,VUKOSAVIC S N.A method for magnetizing curve identification in rotor flux oriented induction machines[J].IEEE Transactions on Energy Conversion,2000,15(2):157-162.
[7]柯锋,周永鹏,黄锦恩,等.PWM恒流充电系统的设计[J].电子技术应用,2002,28(3):43-44.KE F,ZHOU Y P,HUANG J E,et al.Design of constant current charging system by PWM[J].Application of Electronic Technique,2002,28(3):43-44(in Chinese).
[8]王鹏.定量充磁机充电系统的设计[D].河北大学,2011.WANG P.The design of the charging system of an quantitatively magnetizing machine[D].Hebei University,2011(in Chinese).
[9]KOLOTOV O S,MATYUNIN A V,MIRONETS O A,et al.A magnetizer for studying transient processes in magnets over a wide time interval[J].Instruments and Experimental Techniques,2004,47(6):817-820.