Data processing system and data processing method

A data processing method related to deterioration diagnosis of at least one of a load or a servomotor in a servo system, the servo system including the load, a servo amplifier, and the servomotor that applies power to the load in accordance with control of the servo amplifier, the data processing method comprising:

• acquiring at least one signal of a control signal used for controlling the servo system or a detection signal output from a sensor that detects a state of the servo system;
• generating pieces of first data regarding three or more feature values from a predetermined region in a signal waveform of the at least one signal;
• generating three or more pieces of second data that are pieces of time-series data indicating progress of deterioration of at least one of the load or the servomotor, the three or more pieces of second data indicating change tendencies with time of the pieces of first data regarding the three or more feature values, respectively;
• and
• comparing the three or more pieces of second data with each other, and presenting specific second data exhibiting a change tendency different from the change tendencies of other pieces of second data by performing specific processing related to object data that is the first data that causes the different change tendency in a case where there is the specific second data, wherein
• the specific processing comprises correction of the object data, with an approximate curve, based on the change tendency of at least one of the pieces of second data other than the specific second data among the three or more pieces of second data, and presenting the corrected object data.

A data processing method related to deterioration diagnosis of at least one of a load or a servomotor in a servo system, the servo system including the load, a servo amplifier, and the servomotor that applies power to the load in accordance with control of the servo amplifier, the data processing method comprising:

• acquiring at least one signal of a control signal used for controlling the servo system or a detection signal output from a sensor that detects a state of the servo system;
• generating pieces of first data regarding three or more feature values from a predetermined region in a signal waveform of the at least one signal;
• generating three or more pieces of second data that are pieces of time-series data indicating progress of deterioration of at least one of the load or the servomotor, the three or more pieces of second data indicating change tendencies with time of the pieces of first data regarding the three or more feature values, respectively;
• and
• comparing the three or more pieces of second data with each other, and presenting specific second data exhibiting a change tendency different from the change tendencies of other pieces of second data by performing specific processing related to object data that is the first data that causes the different change tendency in a case where there is the specific second data, wherein
• the specific processing includes processing related to at least one of non-presentation of the object data, correction of the object data, or notification regarding the object data,
• the data processing method further comprises determining reliability related to the change tendency of the specific second data based on a change tendency of reference data having a same type of a feature value as the specific second data,
• in a case where the specific second data is displayed on a screen, the data processing method further comprises displaying information regarding the reliability on the screen.