Title:
CONTROL DEVICE OF WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2007/052538
Kind Code:
A1
Abstract:
A control device of a work machine capable of matching the speeds of both a hydraulic actuator
and an electric actuator with each other when these actuators are operated in
combination with each other. When a hydraulic cylinder (31) for a boom and a power
generation motor (11) for turning are determined to be operated in combination with
each other by determination parts (71, 72) based on the operating amounts of an
operating lever (41) for the boom and an operating lever (42) for turning, the
torque of the power generation motor (11) is limited based on a pump discharge pressure
Pp and accordingly, for example, a torque limit instruction, for reducing
the torque limit value TL2 of the power generation motor (11) as the discharge
pressure Pp of a hydraulic pump (3) is reduced, is generated and output.
A pump suction power instruction for limiting the suction power Wp of
the hydraulic pump (3) is generated to reduce the suction power Wp of
the hydraulic pump (3) as a turning output power Wsw is increased. An
engine/pump controller (17) controls the hydraulic pump (3) so that the pump suction
power of the hydraulic pump (3) does not exceed a calculated pump suction power
Wp.
Inventors:
MORINAGA JUN (JP)
KAWAGUCHI TADASHI (JP)
INOUE HIROAKI (JP)
KAWAGUCHI TADASHI (JP)
INOUE HIROAKI (JP)
Application Number:
PCT/JP2006/321430
Publication Date:
May 10, 2007
Filing Date:
October 26, 2006
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
MORINAGA JUN (JP)
KAWAGUCHI TADASHI (JP)
INOUE HIROAKI (JP)
MORINAGA JUN (JP)
KAWAGUCHI TADASHI (JP)
INOUE HIROAKI (JP)
International Classes:
E02F9/20; E02F9/22; F15B11/16; F15B21/14
Foreign References:
| JP2003328397A | 2003-11-19 | |||
| JP2004150307A | 2004-05-27 |
Attorney, Agent or Firm:
SAKAI, Hiroaki (Kasumigaseki Building 2-5, Kasumigaseki 3-chome, Chiyoda-k, Tokyo 19, JP)
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