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Patent Searching and Data


Title:
WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/180894
Kind Code:
A1
Abstract:
A controller (25) of a hydraulic shovel (1) is provided with: a signal separating unit (150) which separates target speed signals of each of a plurality of front members 8, 9, 10 into a low frequency component and a high-frequency component; a high fluctuation target speed calculating unit (143) which preferentially allocates the separated high-frequency components to the front members having relatively small inertial loads, and calculates a high fluctuation target speed of each of the plurality of front members; a high fluctuation target actuator speed calculating unit (141c) which calculates a high fluctuation target speed of each of a plurality of actuators from the high fluctuation target speeds of the plurality of front members; a low fluctuation target actuator speed calculating unit (141b) which calculates a low fluctuation target speed of each of the plurality of actuators from the low frequency components separated by the signal separating unit; and an actuator control unit (200) which controls each of the plurality of actuators on the basis of a value obtained by adding the high fluctuation target speed and the low fluctuation target speed for each of the plurality of actuators.

Inventors:
NAKANO Hisami (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
TANAKA Hiroaki (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
SUZUKI Yusuke (Hitachi Construction Machinery Co. Ltd., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
Application Number:
JP2018/011513
Publication Date:
September 26, 2019
Filing Date:
March 22, 2018
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (16-1, Higashiueno 2-chome Taito-k, Tokyo 15, 〒1100015, JP)
International Classes:
E02F3/43
Domestic Patent References:
WO2015181990A12015-12-03
WO2012127912A12012-09-27
Foreign References:
JP2012172382A2012-09-10
JPH05321297A1993-12-07
JP2011224694A2011-11-10
JPH0380310A1991-04-05
Attorney, Agent or Firm:
KAICHI IP (3-16, Nihonbashi-muromachi 4-chome Chuo-k, Tokyo 22, 〒1030022, JP)
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