Title:
HYDRAULIC-PUMP FLOW-RATE CALIBRATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/162377
Kind Code:
A1
Abstract:
Provided is a hydraulic-pump flow-rate calibration system including: a variable-capacity-type hydraulic pump that is connected to a hydraulic actuator operated at a speed corresponding to the flow rate of a hydraulic fluid supplied thereto and that supplies the hydraulic fluid to the hydraulic actuator; a regulator that changes the discharge flow rate from the hydraulic pump according to an input flow-rate command signal; a flow-rate detection device that detects the flow rate of the hydraulic fluid supplied to the hydraulic actuator; a control device that controls the regulator by outputting the flow-rate command signal to the regulator; and a calibration device that calculates measured characteristics of the discharge flow rate with respect to the flow-rate command signal and that performs, on standard characteristics set in advance, calibration based on the measured characteristics. The measured characteristics are calculated by detecting, at the flow-rate detection device, the flow rate of the hydraulic fluid supplied to the hydraulic actuator, when a predetermined flow-rate command signal is output from the control device to the regulator.
Inventors:
MURAOKA HIDEYASU
KINOSHITA NOBUYUKI
NOSE TOMOMICHI
HATA YOSHIHIKO
OKASHIRO TAKASHI
KINOSHITA NOBUYUKI
NOSE TOMOMICHI
HATA YOSHIHIKO
OKASHIRO TAKASHI
Application Number:
PCT/JP2020/003827
Publication Date:
August 13, 2020
Filing Date:
January 31, 2020
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F04B49/06; E02F9/22; F15B11/02
Domestic Patent References:
| WO2017085996A1 | 2017-05-26 | |||
| WO2006129422A1 | 2006-12-07 | |||
| WO2005100793A1 | 2005-10-27 |
Foreign References:
| JPH11311203A | 1999-11-09 | |||
| JPH0681772A | 1994-03-22 |
Attorney, Agent or Firm:
ISHIDA, Shoji (JP)
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