MALFUNCTION DETERMINATION METHOD AND MALFUNCTION-DETERMINING DEVICE

Title:

MALFUNCTION DETERMINATION METHOD AND MALFUNCTION-DETERMINING DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/130430

Kind Code:

A1

Abstract:

When used with a production machinery provided with a motor as a drive source for a rotating mechanism, this malfunction determination method involves: acquiring sensor data from a sensor for detecting the condition of the production machinery; determining, on the basis of the operation history of the production machinery, whether or not there was an operational downtime in which the production machinery ceased operating for at least a specified period; if there is an operational downtime, setting a malfunction determination suspension period for suspending malfunction determination for the production machinery depending on the length of the operational downtime; and in periods other than the malfunction determination suspension period, determining whether or not the production machinery is malfunctioning.

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Inventors:

TANAKA YASUHIRO (JP)
URAKAWA TOSHIMICHI (JP)
TAKAGI TORU (JP)
TOMIKASHI MINORU (JP)

Application Number:

PCT/JP2017/046666

Publication Date:

July 04, 2019

Filing Date:

December 26, 2017

Export Citation:

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Assignee:

NISSAN MOTOR (JP)

International Classes:

B25J19/06; G05B19/4062

Domestic Patent References:

WO2016189608A1	2016-12-01
WO2016194029A1	2016-12-08

Foreign References:

JP2002175104A	2002-06-21
JP2007219991A	2007-08-30

Other References: