CA2212308A1 - A solenoid valve control device - Google Patents

A solenoid valve control device

Info

Publication number
CA2212308A1
CA2212308A1 CA 2212308 CA2212308A CA2212308A1 CA 2212308 A1 CA2212308 A1 CA 2212308A1 CA 2212308 CA2212308 CA 2212308 CA 2212308 A CA2212308 A CA 2212308A CA 2212308 A1 CA2212308 A1 CA 2212308A1
Authority
CA
Canada
Prior art keywords
output pressure
solenoid valve
pressure
command
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2212308
Other languages
French (fr)
Other versions
CA2212308C (en
Inventor
Naoki Yamaguchi
Osamu Akamatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nabco Ltd
Original Assignee
Nabco Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/801,851 external-priority patent/US5775367A/en
Application filed by Nabco Ltd filed Critical Nabco Ltd
Publication of CA2212308A1 publication Critical patent/CA2212308A1/en
Application granted granted Critical
Publication of CA2212308C publication Critical patent/CA2212308C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Magnetically Actuated Valves (AREA)
  • Feedback Control In General (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

Three-position solenoid valve which outputs an output pressure and can adopt exhaust, overlapping and supply positions. The output pressure is detected by an output pressure sensor and is fed back to a fuzzy control unit.
Based on the difference between the output pressure and the command pressure corresponding to the pressure command signal from the brake control unit, such fuzzy control unit calculates a command current value for controlling the three-position solenoid valve by fuzzy reasoning. The command current value can adopt an essentially continuous value, and consequently the three-position solenoid valve can adopt a gentle exhaust state or a gentle supply state. In this way, sudden changes in the output pressure can be suppressed and the output pressure can be made to converge rapidly on the command pressure and eliminate overshoot and undershoot.
CA 2212308 1997-02-21 1997-08-01 A solenoid valve control device Expired - Fee Related CA2212308C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/801,851 US5775367A (en) 1996-02-22 1997-02-21 Solenoid valve control device
US801,851 1997-02-21

Publications (2)

Publication Number Publication Date
CA2212308A1 true CA2212308A1 (en) 1998-08-21
CA2212308C CA2212308C (en) 2001-01-16

Family

ID=25182188

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2212308 Expired - Fee Related CA2212308C (en) 1997-02-21 1997-08-01 A solenoid valve control device

Country Status (1)

Country Link
CA (1) CA2212308C (en)

Also Published As

Publication number Publication date
CA2212308C (en) 2001-01-16

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed