Abnormality determination system, data transmitter-receptor, motor controller, and method for determining abnormality

1. An abnormality determination system, comprising:

motor control circuitry configured to control a motor of a motor-driven machine based on a motor control command, and compare operation data of the motor obtained in controlling the motor with reference data stored in a storage to determine whether the motor driven machine has an operation abnormality;

upper-level control circuitry configured to transmit the motor control command to the motor control circuitry;

data transceiver circuitry configured to transmit and receive the reference data and the operation data to and from the motor control circuitry,

wherein the reference data comprises a plurality of reference data that are calculated based on normal operation data obtained while the motor-driven machine is being driven normally and that respectively correspond to a plurality of predetermined operation patterns.

2. The abnormality determination system according to claim 1 , further comprising:

data management circuitry configured to transmit and receive the reference data and the operation data to and from the data transceiver circuitry and configured to compare the operation data with the reference data to determine whether the motor driven machine has the operation abnormality.

3. The abnormality determination system according to claim 2 , wherein the data transceiver circuitry is integral to the data management circuitry.

4. The abnormality determination system according to claim 2 , wherein the data transceiver circuitry is integral to the motor control circuitry and configured to transmit and receive the reference data and the operation data to and from the data management circuitry through a wireless communication.

5. The abnormality determination system according to claim 2 , wherein the reference data is generated by machine learning, and the motor control circuitry is configured to determine whether the operation data has a data abnormality using the reference data generated by machine learning, determine whether the motor-driven machine has the operation abnormality based on an acquisition situation in which the operation data determined as having the data abnormality was obtained, and when the motor control circuitry has determined that the motor driven machine has the operation abnormality, transmit abnormal operation data to the data transceiver circuitry, the abnormal operation data comprising the operation data obtained when the motor-driven machine was determined to have the operation abnormality.

6. The abnormality determination system according to claim 5 , wherein the reference data comprises a plurality of reference data that are calculated based on normal operation data obtained while the motor-driven machine is being driven normally and that respectively correspond to a plurality of predetermined operation patterns.

7. The abnormality determination system according to claim 5 , wherein the motor control circuitry is further configured to receive, via the data transceiver circuitry, a command to obtain the operation data, and upon receipt of the command, the motor control circuitry is further configured to obtain the operation data and transmit the obtained operation data to the data transceiver circuitry.

8. The abnormality determination system according to claim 2 , wherein the motor control circuitry is further configured to receive, via the data transceiver circuitry, a command to obtain the operation data, and upon receipt of the command, the motor control circuitry is further configured to obtain the operation data and transmit the obtained operation data to the data transceiver circuitry.

9. The abnormality determination system according to claim 1 , wherein the reference data is generated by machine learning, and the motor control circuitry is configured to determine whether the operation data has a data abnormality using the reference data generated by machine learning, determine whether the motor-driven machine has the operation abnormality based on an acquisition situation in which the operation data determined as having the data abnormality was obtained, and when the motor control circuitry has determined that the motor driven machine has the operation abnormality, transmit abnormal operation data to the data transceiver circuitry, the abnormal operation data comprising the operation data obtained when the motor-driven machine was determined to have the operation abnormality.

10. The abnormality determination system according to claim 9 , wherein the reference data comprises a plurality of reference data that are calculated based on normal operation data obtained while the motor-driven machine is being driven normally and that respectively correspond to a plurality of predetermined operation patterns.

11. The abnormality determination system according to claim 9 , wherein the motor control circuitry is further configured to receive, via the data transceiver circuitry, a command to obtain the operation data, and upon receipt of the command, the motor control circuitry is further configured to obtain the operation data and transmit the obtained operation data to the data transceiver circuitry.

12. The abnormality determination system according to claim 1 , wherein the motor control circuitry is further configured to receive, via the data transceiver circuitry, a command to obtain the operation data, and upon receipt of the command, the motor control circuitry is further configured to obtain the operation data and transmit the obtained operation data to the data transceiver circuitry.

13. The abnormality determination system according to claim 1 , wherein the data transceiver circuitry is integral to the motor control circuitry.

14. The abnormality determination system according to claim 1 , wherein the motor control circuitry is further configured to receive, via the data transceiver circuitry, a command to obtain the operation data, and upon receipt of the command, the motor control circuitry is further configured to obtain the operation data and transmit the obtained operation data to the data transceiver circuitry.

15. A method for determining an abnormality in a motor-driven machine, comprising:

obtaining observation-time operation data of a motor of the motor-driven machine, the observation-time operation data being operation data obtained while the motor driven machine is being driven for observation purposes;

determining whether the observation-time operation data has a data abnormality using reference data generated by machine learning; and

determining whether the motor driven machine has an operation abnormality based on an acquisition situation in which the observation-time operation data, determined as having the data abnormality, was obtained,

wherein the reference data comprises a plurality of reference data that are calculated based on normal operation data obtained while the motor-driven machine is being driven normally and that respectively correspond to a plurality of predetermined operation patterns.

16. The method according to claim 15 , wherein the reference data includes a sample mean and a sample covariance matrix that are calculated based on a predetermined data abnormality determination threshold and normal operation data, the normal operation data being obtained while the motor-driven machine is being driven normally, and the determining whether the observation-time operation data has the data abnormality further comprises calculating a Mahalanobis distance based on the sample mean, the sample covariance matrix, and the observation-time operation data, and comparing the data abnormality determination threshold with the Mahalanobis distance, to determine whether the observation-time operation data has the data abnormality.

17. An apparatus, comprising:

data transmitter-receptor configured to receive reference data from data management circuitry, transmit the received reference data to motor control circuitry, receive operation data from the motor control circuitry, and transmit the received operation data to the data management circuitry,

wherein the reference data comprises a plurality of reference data that are calculated based on normal operation data obtained while the motor-driven machine is being driven normally and that respectively correspond to a plurality of predetermined operation patterns.

18. An apparatus, comprising:

motor control circuitry configured to control a motor of a motor-driven machine and configured to determine whether the motor-driven machine has an operation abnormality by comparing observation-time operation data of the motor with reference data,

wherein the observation-time operation data is obtained while the motor-driven machine is being driven for observation purposes, and the reference data is calculated based on normal operation data of the motor obtained while the motor driven machine is being driven normally,

wherein the reference data comprises a plurality of reference data that are calculated based on the normal operation data obtained while the motor-driven machine is being driven normally and that respectively correspond to a plurality of predetermined operation patterns.