Title:
CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2015148928
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a construction machine capable of suppressing unneeded behavior when target displacement does not change.SOLUTION: A cylinder of a working device includes a cylinder displacement sensor each. A controller 32 includes: a target posture setting part 33 for setting target displacement Xa0, Xb0 of the cylinder; and an operation signal generation part 34 for generating operation signals Sa, Sb such that the target displacement Xa0, Xb0 by the target posture setting part 33 becomes equal to actual displacement Xa1, Xb1 by the cylinder displacement sensor. A feedback operation signal generation part 39 of the operation signal generation part 34 includes a feedback gain correction part 44 for decreasing gains of feedback operation signals SFBa, SFBb to deviations ΔXa, ΔXb when a change in the target displacement Xa0, Xb0 is smaller than a predetermined threshold.
Inventors:
KONDO SATOMI
Application Number:
JP2014021214A
Publication Date:
August 20, 2015
Filing Date:
February 06, 2014
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
G05B13/02; E02F3/43; E02F9/20; G05B11/36; G05B11/42
Attorney, Agent or Firm:
Kazuhiko Hirose