| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for an electromagnetic drive valve which performs feedback control more properly so that an actual value of a current flowing in an electromagnet becomes desired attraction current value when attracting an armature to the electromagnet. SOLUTION: This electronic controller 50 outputs a command current value which is an attraction current value for desiring current carrying for an electromagnet 61 for closing drive and an electromagnet 62 for opening drive to a drive circuit 70. The drive circuit 70 performs feedback control so that a current flowing actually in the electromagnet 61 for closing drive and the electromagnet 62 for opening drive becomes a command current. At this time, the drive circuit 70 takes in a detected value concerning an interval among the electromagnet 61 for closing drive, the electromagnet 62 for opening drive, and the armature 28 as a detected value of a displacement amount sensor 52. The drive circuit 70 sets feedback gain applied on feedback variably in accordance with the interval among the electromagnet 61 for closing drive, the electromagnet 62 for opening drive, and the armature 28. COPYRIGHT: (C)2004,JPO
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