油圧弁の直流オンオフソレノイド電磁力特性に関する研究(アーマチャ段付寸法の影響)

概要

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In this study, the examination for obtaining high electro-magnetic force by means of varying the step size of armature of D.C. on-off solenoid which is built in the directional control valve on the market has been performed. For this examination, solenoids which include armature of step size being equal to 0(stepless),1,2,3,5mm and remove the copper spacer of the armature end added the one on the market were manufactured. And, the relations between armature-stator gap and electro-magnetic force for these five solenoids were measured. According to this results, it became clear that the electro-magnetic force of the solenoid of stepless armature is obtained from one and a half times to four times as the solenoid being on the market in the region less than 1mm of the gap. And the solenoid included the armature of step size being equal to 1mm was obtained the electro-magnetic force which is 10-20 percent down to the stepless armature. Consequently, it became clear that the solenoid with built-in the stepless armature or the armature of step size being 1mm is suitable to apply high response and small-sized oil-hydraulic proportional control valve.
豊田工業高等専門学校の論文
2000-11-10