JPS5680511A - Electric oil hydraulic servo-device - Google Patents

Electric oil hydraulic servo-device

Info

Publication number
JPS5680511A
JPS5680511A JP15802479A JP15802479A JPS5680511A JP S5680511 A JPS5680511 A JP S5680511A JP 15802479 A JP15802479 A JP 15802479A JP 15802479 A JP15802479 A JP 15802479A JP S5680511 A JPS5680511 A JP S5680511A
Authority
JP
Japan
Prior art keywords
servo
gain
origin
amplifier
valve
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
JP15802479A
Other languages
Japanese (ja)
Inventor
Koji Fujiwara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15802479A priority Critical patent/JPS5680511A/en
Publication of JPS5680511A publication Critical patent/JPS5680511A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To minimize the effect of nonlinear element in contact with a servo-valve in the above-identified system which is used for testers and electrically increase the gain of the entire servo-system for stabilizing the system by reducing the gain near the origin and increasing the gain of the servo- amplifier.
CONSTITUTION: To electrically increase the gain of the entire servo-system, the servo-amplifier 5 is provided with a bent plot gain characteristic F1 as is shown in the Figure, having a large slope portion F1a and then a small slop portion F1b. With the gain reduced in the neighborhood of the origin for the servo-amplifier 5 and reduced in the neighborhood of the origin for the servo-valve 7, the gain of the servo-system can be electrically increased to improve the response characteristic of the servo-valve 7.
COPYRIGHT: (C)1981,JPO&Japio
JP15802479A 1979-12-07 1979-12-07 Electric oil hydraulic servo-device Pending JPS5680511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15802479A JPS5680511A (en) 1979-12-07 1979-12-07 Electric oil hydraulic servo-device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15802479A JPS5680511A (en) 1979-12-07 1979-12-07 Electric oil hydraulic servo-device

Publications (1)

Publication Number Publication Date
JPS5680511A true JPS5680511A (en) 1981-07-01

Family

ID=15662601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15802479A Pending JPS5680511A (en) 1979-12-07 1979-12-07 Electric oil hydraulic servo-device

Country Status (1)

Country Link
JP (1) JPS5680511A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110901A (en) * 1982-12-14 1984-06-27 Hitachi Constr Mach Co Ltd Flow controller for hydraulic circuit
JPS60167205U (en) * 1984-04-12 1985-11-06 三菱重工業株式会社 Direct-acting servo valve servo circuit
US4747335A (en) * 1986-12-22 1988-05-31 Caterpillar Inc. Load sensing circuit of load compensated direction control valve
JPH07158765A (en) * 1993-12-08 1995-06-20 Uchida Yuatsu Kiki Kogyo Kk Control method for operation of proportional solenoid valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110901A (en) * 1982-12-14 1984-06-27 Hitachi Constr Mach Co Ltd Flow controller for hydraulic circuit
JPH0315042B2 (en) * 1982-12-14 1991-02-28 Hitachi Construction Machinery
JPS60167205U (en) * 1984-04-12 1985-11-06 三菱重工業株式会社 Direct-acting servo valve servo circuit
US4747335A (en) * 1986-12-22 1988-05-31 Caterpillar Inc. Load sensing circuit of load compensated direction control valve
JPH07158765A (en) * 1993-12-08 1995-06-20 Uchida Yuatsu Kiki Kogyo Kk Control method for operation of proportional solenoid valve

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