US 11,833,695 B2
Diagnosis of state of device
Ryo Kabutan, Fukuoka (JP); Takuro Matsumoto, Fukuoka (JP); and Ryohei Suzuki, Tokyo (JP)
Filed by KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu (JP)
Filed on Nov. 15, 2021, as Appl. No. 17/525,960.
Claims priority of application No. 2020-190341 (JP), filed on Nov. 16, 2020.
Prior Publication US 2022/0152830 A1, May 19, 2022
Int. Cl. G06F 11/30 (2006.01); B25J 9/16 (2006.01); B23K 37/02 (2006.01); G01M 99/00 (2011.01)
CPC B25J 9/1674 (2013.01) [B23K 37/0229 (2013.01); B25J 9/163 (2013.01); G01M 99/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A diagnosis system comprising circuitry configured to:
output, to a motor of a target device, a first command that causes the motor to operate a work apparatus at a non-zero first pressure;
acquire first data generated in response to operating the work apparatus of the target device at the first pressure;
output, to the motor, a second command that causes the motor to increase a pressure at which the work apparatus is operated, from the first pressure to a second pressure without lowering the pressure below the first pressure, and to operate the work apparatus at the second pressure;
acquire second data generated in response to operating the work apparatus at the second pressure;
calculate a feature quantity indicating a relation between the first data and the second data; and
determine a state of the target device based on the feature quantity.