Title:
CONTROLLER OF CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/1998/024985
Kind Code:
A1
Abstract:
A controller of a construction machine such as a hydraulic shovel which digs the ground has an angle detecting means (20-22) for detecting the posture of an articulated arm mechanism in terms of angle information, a converting means (26) which converts the detected angle information into expansion/contraction displacement information of a corresponding cylinder actuator (120-122) and a control means (1) which controls the actuator (120-122) to have the required expansion/contraction displacement in accordance with the obtained expansion/contraction displacement information. Thus the position and posture of a working member (400) can be accurately and stably controlled while the cost is kept low.
Inventors:
TOZAWA SHOJI (JP)
ONO TOMOAKI (JP)
ONO TOMOAKI (JP)
Application Number:
PCT/JP1997/004361
Publication Date:
June 11, 1998
Filing Date:
November 28, 1997
Export Citation:
Assignee:
CATERPILLAR MITSUBISHI LTD (JP)
TOZAWA SHOJI (JP)
ONO TOMOAKI (JP)
TOZAWA SHOJI (JP)
ONO TOMOAKI (JP)
International Classes:
E02F3/43; E02F9/26; E02F9/22; (IPC1-7): E02F3/43
Foreign References:
| JPH07197485A | 1995-08-01 | |||
| JPS62185928A | 1987-08-14 | |||
| JPS61200226A | 1986-09-04 |
Other References:
See also references of EP 0900887A4
Attorney, Agent or Firm:
Sanada, Tamotsu (8th floor 10-31, Kichijoji-Honcho 1-chom, Musashino-shi Tokyo 180, JP)
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