Search International and National Patent Collections
|1. (WO2018158910) DIAGNOSTIC DEVICE AND DIAGNOSTIC METHOD|
|Title:||DIAGNOSTIC DEVICE AND DIAGNOSTIC METHOD|
Provided is a diagnostic device for highly accurately diagnosing a rotating machine even when a diagnosis is based on a small amount of current data. This diagnostic device is provided with a current measurement unit for measuring current flowing through at least two locations in a rotating machine and a diagnostic unit for diagnosing, on the basis of current data output by the current measurement unit, the state of the rotating machine and a peripheral device electrically or mechanically connected to the rotating machine. The diagnostic unit creates a Lissajous curve distribution map by layering multiple periods of the two types of current data obtained by the current measurement unit and diagnoses the state of the rotating machine system from the results of evaluating the distribution map.