Title:
METHOD AND DEVICE FOR DETECTING ABNORMALITY OF TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2023058100
Kind Code:
A
Abstract:
To make it possible to detect with a small amount of calculation the occurrence of an abnormality in a transmission device such as a reduction gear or a driving unit that is provided in a robot and the like.SOLUTION: An abnormality detection device is for detecting an abnormality in a transmission device such as, for example, a reduction gear 38 driven by a motor 36. The abnormality detection device has: a bandpass filter 44 for performing bandpass filter processing on a detected value of the speed of the motor 36; and determination means (comparator 46) for determining presence or absence of the occurrence of an abnormality of the transmission device on the basis of a signal obtained by the bandpass filter processing. Between the bandpass filter 44 and the determination means, an RMS calculation unit 45 may be provided to calculate a root mean square (RMS) value of the signal output from the bandpass filter 44. The bandpass filter 44 is, for example, a fifth-order Butterworth filter.SELECTED DRAWING: Figure 3
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Inventors:
MOMOSAWA YOSHIAKI
Application Number:
JP2021167875A
Publication Date:
April 25, 2023
Filing Date:
October 13, 2021
Export Citation:
Assignee:
NIDEC INSTR CORP
International Classes:
H02P29/00; B25J19/06; G01H17/00; G01M99/00; H01L21/677
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata