Title:
建設機械の制御装置
Document Type and Number:
Japanese Patent JP6406832
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress a load applied to an engine when a hydraulic load is rapidly changed.SOLUTION: A control device of a construction machine for driving a hydraulic pump with an engine and an electric motor mechanically connected with the engine to perform work includes an engine speed control section for calculating a torque command of the engine on the basis of a speed command output from a speed command section, an electric motor speed control section for calculating a torque command of the electric motor on the basis of the speed command output from the speed command section, a torque target setting section for calculating a torque target of the engine on the basis of the torque command of the electric motor, a torque limit section for limiting and outputting a time change rate of the torque target of the engine calculated by the torque target setting section, and a correction section for correcting the speed command input into the engine speed control section on the basis of the torque target of the engine output from the torque limit section.
Inventors:
Seiji Ishida
Ishihara Shinji
Masatoshi Hoshino
Ishihara Shinji
Masatoshi Hoshino
Application Number:
JP2014036500A
Publication Date:
October 17, 2018
Filing Date:
February 27, 2014
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
F02D29/00; B60L50/16; E02F9/20
Domestic Patent References:
| JP2013050006A | ||||
| JP2012016993A | ||||
| JP2014009525A |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office