US 11,892,814 B2
Diagnostic device and machine learning device
Liancheng Hu, Yamanashi (JP); Kazuhiro Satou, Yamanashi (JP); and Hiroyasu Asaoka, Yamanashi (JP)
Assigned to FANUC CORPORATION, Yamanashi (JP)
Filed by FANUC CORPORATION, Yamanashi (JP)
Filed on Sep. 23, 2020, as Appl. No. 17/029,038.
Claims priority of application No. 2019-185353 (JP), filed on Oct. 8, 2019.
Prior Publication US 2021/0103267 A1, Apr. 8, 2021
Int. Cl. G05B 19/4063 (2006.01); G06N 20/00 (2019.01)
CPC G05B 19/4063 (2013.01) [G06N 20/00 (2019.01); G05B 2219/32222 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A diagnostic device configured to infer or detect abnormality of the tension of a belt of an industrial machine for transmitting power, the diagnostic device comprising:
a control unit configured to control a diagnostic operation in which the belt is driven;
a data acquisition unit configured to acquire at least feedback data at the time of the diagnostic operation;
a preprocessing unit configured to analyze frequency-gain characteristics of the feedback data and create, as input data, a range including a resonant frequency and an anti-resonant frequency in the frequency-gain characteristics; and
a machine learning device configured to perform processing related to machine learning, based on the data created by the preprocessing unit.