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JPS56120802A - Oil pressure control - Google Patents

Oil pressure control

Info

Publication number
JPS56120802A
JPS56120802A JP2366780A JP2366780A JPS56120802A JP S56120802 A JPS56120802 A JP S56120802A JP 2366780 A JP2366780 A JP 2366780A JP 2366780 A JP2366780 A JP 2366780A JP S56120802 A JPS56120802 A JP S56120802A
Authority
JP
Japan
Prior art keywords
command signal
flow rate
small
value
rate command
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.)
Pending
Application number
JP2366780A
Other languages
Japanese (ja)
Inventor
Tetsuya Nakayama
Toshiaki Horikoshi
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.)
Komatsu Ltd
Original Assignee
Komatsu 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
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP2366780A priority Critical patent/JPS56120802A/en
Publication of JPS56120802A publication Critical patent/JPS56120802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Servomotors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

PURPOSE: To suppress minute vibrations of an actuator and to save the power consumed by restricting the crest value of a current command signal while the absolute value of a flow rate command signal is small.
CONSTITUTION: In the section of a pulse width modulator 10 and a current controllers 11 and 12, there are provided an absolute valve circuit 13, an amplifier 14, and a pair of small signal priority circuits 15 and 16 so that while the absolute value of the flow rate command signal Is is small, the crest value of the current command signal is restricted. Accordingly, when the flow rate command signal has a value near zero, and electromagnetic valve is not driver purposelessly, thereby suppressing minute vibrations of the actuator and saving the power consumed.
COPYRIGHT: (C)1981,JPO&Japio
JP2366780A 1980-02-27 1980-02-27 Oil pressure control Pending JPS56120802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2366780A JPS56120802A (en) 1980-02-27 1980-02-27 Oil pressure control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2366780A JPS56120802A (en) 1980-02-27 1980-02-27 Oil pressure control

Publications (1)

Publication Number Publication Date
JPS56120802A true JPS56120802A (en) 1981-09-22

Family

ID=12116838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2366780A Pending JPS56120802A (en) 1980-02-27 1980-02-27 Oil pressure control

Country Status (1)

Country Link
JP (1) JPS56120802A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129380U (en) * 1982-02-24 1983-09-01 三菱重工業株式会社 remote control system
JPS59106780A (en) * 1982-12-10 1984-06-20 Uchida Yuatsu Kiki Kogyo Kk Flow control valve utilizing solenoid shut-off valve
JPS5991068U (en) * 1982-12-13 1984-06-20 日本電気株式会社 highway test equipment
JPS62194009A (en) * 1986-02-20 1987-08-26 Kayaba Ind Co Ltd Hydraulic actuator control device
JPS6384477U (en) * 1986-11-22 1988-06-02
JPH03292482A (en) * 1990-04-06 1991-12-24 Daikin Ind Ltd Direct acting type proportional selector valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129380U (en) * 1982-02-24 1983-09-01 三菱重工業株式会社 remote control system
JPS59106780A (en) * 1982-12-10 1984-06-20 Uchida Yuatsu Kiki Kogyo Kk Flow control valve utilizing solenoid shut-off valve
JPS5991068U (en) * 1982-12-13 1984-06-20 日本電気株式会社 highway test equipment
JPS62194009A (en) * 1986-02-20 1987-08-26 Kayaba Ind Co Ltd Hydraulic actuator control device
JPS6384477U (en) * 1986-11-22 1988-06-02
JPH0349284Y2 (en) * 1986-11-22 1991-10-22
JPH03292482A (en) * 1990-04-06 1991-12-24 Daikin Ind Ltd Direct acting type proportional selector valve

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