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Application filed by Nissan MotorfiledCriticalNissan Motor
Priority to MYPI2017704413ApriorityCriticalpatent/MY168997A/en
Priority claimed from PCT/JP2015/064849external-prioritypatent/WO2016189608A1/en
Publication of MY168997ApublicationCriticalpatent/MY168997A/en
Testing Of Devices, Machine Parts, Or Other Structures Thereof
(AREA)
Testing And Monitoring For Control Systems
(AREA)
Abstract
A failure diagnosis device (3) of this invention is applicable to a mechanical device provided with a motor (6) as a source to drive a motion axis. The failure diagnosis device (3) acquires a moving position of the motion axis and a disturbance torque value applied to the motion axis every predetermined period, and diagnoses that a failure is occurring when the acquired disturbance torque value is larger than a failure determination threshold. Then, the failure diagnosis device (3) calculates a change in disturbance torque value before and after conduct of a maintenance task when the maintenance task is conducted on the motion axis, and re-sets the failure determination threshold only when the change in disturbance torque value is larger than a predetermined threshold.
MYPI2017704413A2015-05-252015-05-25Failure diagnosis device and failure diagnosis method
MY168997A
(en)
Screwing unit and method for screwing a screw into or unscrewing a screw from at least one workpiece in an automated manner by means of a screwing unit