Title:
ELECTRONIC CONTROL DEVICE FOR HYDRAULIC CIRCUIT
Document Type and Number:
Japanese Patent JP3131297
Kind Code:
B2
Abstract:
PURPOSE: To provide the structure of a control unit having simple wiring, replaceable at a low cost, easy to exercise production control, and having no inconsistency in control and no assembly miss.
CONSTITUTION: A control unit 11 storing basic data maintains data communications with control units 7, 12 in response to signals of a control unit 10. A control unit 7 receives the basic data from the control unit 11, makes a control calculation based on the pressure signal of a pressure detector 5 and the swash plate position signal of a swash plate detector 6, and outputs the swash plate drive signal to a swash plate position control device 8. The discharge flow of a hydraulic pump 1 is controlled by this signal. The control unit 12 receives the basic data from the control unit 11, makes a control calculation, and outputs the control signal to a motor 14. The opening of the governor lever 13b of an engine 13 is controlled by this signal, and the revolving speed of the engine 13 is controlled.
Inventors:
Hiroshi Watanabe
Yasuo Tanaka
Yasuo Tanaka
Application Number:
JP21790692A
Publication Date:
January 31, 2001
Filing Date:
August 17, 1992
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/22; F15B11/00; F15B11/08; F15B21/08; G05B11/01; G05B11/36; (IPC1-7): F15B11/00; E02F9/22; F15B11/08; F15B21/08; G05B11/36
Domestic Patent References:
| JP5280501A | ||||
| JP6128639A | ||||
| JP63195403A | ||||
| JP1279101A | ||||
| JP2209601A | ||||
| JP293103A | ||||
| JP366901A | ||||
| JP3134304A | ||||
| JP417740A | ||||
| JP5248414A | ||||
| JP6506287A |
Attorney, Agent or Firm:
Kasuga