Title:
CONTROL DEVICE FOR PROPORTIONAL SOLENOID VALVE
Document Type and Number:
Japanese Patent JP2000283325
Kind Code:
A
Abstract:
To possibly remove influence of hysterisis in relation to a solenoid valve without deteriorating its durability and reliability.
This control device has a sensing means 17 for sensing hysterisis H when a proportional electromagnetic valve is operated according to driving current carried to a solenoid coil 11. Dither amplitude of the driving current is increased compared to the former one when the hysterisis H is not less than a first specified value (a), by dither amplitude correction means 21, 22, 23, 24, 25. On the other hand, the dither amplitude of the driving current is reduced compared to the former one when the hysterisis H is not more than a second specified value (b) less than the first specified value (a).
Inventors:
HANEDA YOSHITOMI
TERAKAWA TOMOMITSU
ODA TADASHI
NAITO TAKAO
TERAKAWA TOMOMITSU
ODA TADASHI
NAITO TAKAO
Application Number:
JP9005699A
Publication Date:
October 13, 2000
Filing Date:
March 30, 1999
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F15B13/044; F15B21/08; F16D48/06; F16K31/06; H02K33/02; (IPC1-7): F16K31/06; F16K31/06; H02K33/02