Title:
CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/102391
Kind Code:
A1
Abstract:
A speed compensation unit (54) of a construction machine (100) performs feedback control in which when a compound operation is performed and a preset load determination condition is satisfied, the speed compensation unit (54) calculates a correction amount that is an increasing function of the speed difference between a first target speed and a first actual speed, the first target speed being the target speed of a first actuator that is determined on the basis of the operation amount of a first command operation, the first actual speed being the actual speed of the first actuator, and the speed compensation unit (54) adjusts the opening degree of a second control valve to the opening degree obtained by subtracting the correction amount from a second target opening degree of the second control valve.
Inventors:
KAWAMOTO MASAHIRO
KAMADA MASASHI
KOIWAI KAZUSHIGE
YUMOTO NATSUKI
KAMADA MASASHI
KOIWAI KAZUSHIGE
YUMOTO NATSUKI
Application Number:
PCT/JP2021/039412
Publication Date:
May 19, 2022
Filing Date:
October 26, 2021
Export Citation:
Assignee:
KOBELCO CONSTR MACH CO LTD (JP)
International Classes:
E02F9/22; F15B11/02; F15B11/028; F15B11/17
Foreign References:
| JP2019027261A | 2019-02-21 | |||
| JP2015197185A | 2015-11-09 | |||
| JP2017180712A | 2017-10-05 | |||
| JPH05263442A | 1993-10-12 | |||
| JP2019027261A | 2019-02-21 |
Other References:
See also references of EP 4223943A4
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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