Learning data confirmation support device, machine learning device, and failure predicting device
To facilitate confirmation as to whether or not it is data measured by the same operation upon acquiring measurement data in an industrial machine. A learning data confirmation support device 3 that facilitates confirmation of contamination of inappropriate data when learning data including only normal data are acquired in advance, in order to detect an anomaly of an industrial machine using machine learning, includes a data acquisition unit 31 that acquires measurement data including time-series data representing at least one of a predetermined state quantity or control quantity relating to control when the industrial machine is made to perform a certain operation; and a display control unit 32 that aligns a plurality of pieces of time-series data acquired by the data acquisition unit in a direction of a time axis and, in this state, superimposes a same type of pieces of data of the time-series data to display in a graph.
1. A learning data confirmation support device for confirming contamination of inappropriate data caused by a factor including at least a different setting value or a different operation from a normal one when learning data including only normal data are acquired in advance, in order to detect an anomaly of an industrial machine using machine learning, the learning data confirmation support device comprising:
a data acquisition unit that acquires measurement data including time-series data representing at least one of a predetermined state quantity or control quantity relating to control when the industrial machine is made to execute a control program for a health check by performing a predetermined operation according to a preset schedule and under a preset condition;
a display control unit that aligns a plurality of pieces of the time-series data acquired by the data acquisition unit in a direction of a time axis, and superimposes a same parameter of measurement data acquired at different times from the plurality of pieces of data of the time-series data as separate waveforms in a graph that is displayed, thereby confirming the contamination of the inappropriate data by visually listing the learning data in the form of the graph and comparing the separate waveforms;
a data storage unit that stores the time-series data acquired by the data acquisition unit; and
a data selection unit that excludes, from the data storage unit, time series data determined as inappropriate data as learning data from the plurality of pieces of time-series data displayed in the graph by the display control unit,
wherein the inappropriate data as learning data is determined from any waveform among the separate waveforms that do not overlap on a line, and the data selection unit excludes the measurement data that corresponds to the waveforms that do not overlap on the line as the inappropriate data as the learning data.
2. The learning data confirmation support device according to claim 1 , wherein the time-series data are time-series data of a state quantity or a control quantity including at least a current value of a motor, a velocity of the motor, and an estimated disturbance value.
3. A machine learning device communicatively connected to the learning data confirmation support device according to claim 1 , the machine learning device comprising:
a learning unit that performs learning by unsupervised machine learning on a basis of time-series data from which the inappropriate data are excluded by the data selection unit, the time-series data being stored in the data storage unit.
4. A failure predicting device communicatively connected to the machine learning device according to claim 3 , the failure predicting device comprising:
an anomaly diagnosis unit that performs, in response to an input of the measurement data acquired by the data acquisition unit, anomaly diagnosis of the industrial machine on a basis of a learning model created by the learning unit.
5. The failure predicting device according to claim 4 , further comprising:
an anomaly notification unit that notifies an anomaly,
wherein the anomaly diagnosis unit instructs the anomaly notification unit to perform a notification on a basis of an anomaly diagnosis result of the industrial machine.
6. The learning data confirmation support device according to claim 1 , wherein the same parameter of measurement data acquired at the different times includes a current value of a motor, a velocity of a motor, or an estimated disturbance value.