Title:
SOLENOID VALVE CONTROL APPARATUS AND BRAKE CONTROL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2000/044007
Kind Code:
A1
Abstract:
A solenoid valve controller comprises a solenoid valve (C) that has a closed state where its plunger (a) touches the seat (b) and an open state where the plunger (a) is away from the seat; and control means (e) for carrying out pulse-width modulation control to energize the coil (d) that drives the plunger (a) of the solenoid valve (C). The coil (d) is provided in parallel with means (e) for producing regenerated current. The control means (e) is provided with detector means (g) for detecting the regenerated current. The control means (e) is adapted to perform pulse-width modulation control based on the output from the detector means (g). As a result, the position of the plunger can be detected by simplified inexpensive means that does not require an increase in the force of attraction of the solenoid coil.
Inventors:
FURUYA TAKAYUKI (JP)
SUDOU YUKIO (JP)
KAKIZAKI SHINOBU (JP)
EMURA JYUNICHI (JP)
SAITA NORIHIRO (JP)
SEKI TOSHIHIKO (JP)
IWASAKI KATSUYA (JP)
SUDOU YUKIO (JP)
KAKIZAKI SHINOBU (JP)
EMURA JYUNICHI (JP)
SAITA NORIHIRO (JP)
SEKI TOSHIHIKO (JP)
IWASAKI KATSUYA (JP)
Application Number:
PCT/JP2000/000221
Publication Date:
July 27, 2000
Filing Date:
January 19, 2000
Export Citation:
Assignee:
UNISIA JECS CORP (JP)
FURUYA TAKAYUKI (JP)
SUDO YUKIO (JP)
KAKIZAKI SHINOBU (JP)
EMURA JYUNICHI (JP)
SAITA NORIHIRO (JP)
SEKI TOSHIHIKO (JP)
IWASAKI KATSUYA (JP)
FURUYA TAKAYUKI (JP)
SUDO YUKIO (JP)
KAKIZAKI SHINOBU (JP)
EMURA JYUNICHI (JP)
SAITA NORIHIRO (JP)
SEKI TOSHIHIKO (JP)
IWASAKI KATSUYA (JP)
International Classes:
B60T8/36; H01F7/18; H01H47/32; (IPC1-7): H01F7/18
Foreign References:
| JPH09190916A | 1997-07-22 | |||
| JPS55120111A | 1980-09-16 |
Attorney, Agent or Firm:
Shiga, Fujiya (Akashi-cho Chuo-ku, Tokyo, JP)
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