Title:
油圧機械の制御装置
Document Type and Number:
Japanese Patent JP6815268
Kind Code:
B2
Abstract:
In a hydraulic machine such as a revolving excavator work machine in which a load-sensing pump control system is adopted, error factors are combined. This increases variation in pump control characteristics among a plurality of hydraulic machines, and variation in the operating speed of individual drive units in the hydraulic machines. Given this circumstance there is a demand for a device structure that can easily address the problem. The disclosure provides a control device for a hydraulic machine, configured to perform, by using a storage unit and a calculation unit outside the hydraulic machine, a process of: causing a specific engine rotation state and a specific hydraulic actuator operation state; and calculating a correction rate for a control output value of an electromagnetic proportional valve for generating a control pressure, based on detection of an error in the flow rate of a hydraulic pump or its substitute numerical value such as the rotational speed and the like of a traveling motor which is easily detectable from outside.
Inventors:
Takayuki Shiramizu
Masahiro Itani
Masahiro Itani
Application Number:
JP2017082966A
Publication Date:
January 20, 2021
Filing Date:
April 19, 2017
Export Citation:
Assignee:
Yanmar Power Technology Co., Ltd.
International Classes:
F15B11/00
Domestic Patent References:
| JP2011196116A | ||||
| JP2526440Y2 |
Attorney, Agent or Firm:
Yanouchi Foreign Patent Office