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1. JP2000179667 - HYDRAULIC CONTROL DEVICE FOR AUTOMOBILE, AND CONTROLLING METHOD

Office Japan
Application Number 1998361387
Application Date 18.12.1998
Publication Number 2000179667
Publication Date 27.06.2000
Publication Kind A
IPC
F16H 61/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within change-speed- or reversing-gearings for conveying rotary motion
G05D 16/20
GPHYSICS
05CONTROLLING; REGULATING
DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
16Control of fluid pressure
20characterised by the use of electric means
CPC
F16H 61/0251
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within ; control units of; change-speed- or reversing-gearings for conveying rotary motion ; ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
02characterised by the signals used
0202the signals being electric
0251Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
F16H 59/72
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
59Control inputs to ; control units of; change-speed-, or reversing-gearings for conveying rotary motion
68Inputs being a function of gearing status
72dependent on oil characteristics, e.g. temperature, viscosity
F16K 31/0675
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31Actuating devices;; Operating means; Releasing devices
02electric
06using a magnet ; , e.g. diaphragm valves, cutting off by means of a liquid
0675Electromagnet aspects, e.g. electric supply therefor
Applicants HITACHI LTD
株式会社日立製作所
Inventors MARUMOTO KATSUJI
丸本 勝二
MINOWA TOSHIMICHI
箕輪 利通
OCHI TATSUYA
越智 辰哉
KASHIWATANI MINEO
柏谷 峰雄
KUROIWA HIROSHI
黒岩 弘
Agents 春日 讓
Title
(EN) HYDRAULIC CONTROL DEVICE FOR AUTOMOBILE, AND CONTROLLING METHOD
(JA) 自動車用油圧制御装置及び制御方法
Abstract
(EN)

PROBLEM TO BE SOLVED: To realize the current feedback control of a linear solenoid with high accuracy to the current command value by controlling a drive power supply element to be connected to a winding based on the actual current value carrying in the winding.

SOLUTION: A hydraulic control circuit 10 comprises a control circuit 11, a solenoid drive circuit 12 and a current detection circuit 14. The control circuit 11 outputs the pulse-modulated PWM signal according to the hydraulic command given from an engine control unit, etc., to turn ON/OFF a power element 121 of the solenoid drive circuit 12. When the power element 121 is turned ON, the current flows into a shunt resistor 123 for detecting the current through the power element 121 and a solenoid coil 92 of a solenoid 9. The waveform of the current flowing in the power element 121 is converted into the waveform of the current flowing in the solenoid 92 by the current detection circuit 14, and fed back to the control circuit 11 as the detected current value, and the displacement amount of the solenoid 9 is feedback-controlled.

COPYRIGHT: (C)2000,JPO

(JA)


【課題】リニアソレノイドの電流フィードバック制御を
電流指令値に対して高精度で高応答に制御することがで
きる自動車用油圧制御装置を提供するにある。


【解決手段】油圧制御回路10からのPWM信号によ
り、リニアソレノイド9を動作させて、自動変速機1の
クラッチの締結状態を制御する。
油圧指令と電流検出信
号によってリニアソレノイド9を制御し、さらに、検出
されたソレノイド電流によっても、リニアソレノイドを
制御する。

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