Monitoring device, monitoring method, method of creating shaft vibration determination model, and program

A monitoring method comprising the steps of:

• acquiring process data indicating an operation condition of a machine having a rotating shaft;
• acquiring a measurement value of a shaft vibration value of the rotating shaft under the operation condition indicated by the process data;
• and
• evaluating the measurement value of the shaft vibration value on the basis of a determination model for determining a normal value of the shaft vibration value according to the operation condition created on the basis of the shaft vibration value measured during an operation of the machine and the shaft vibration value calculated on the basis of a predetermined shaft vibration calculation model, the process data, and the measurement value of the shaft vibration value.

A method of creating a shaft vibration determination model, the method comprising the steps of:

• acquiring process data indicating an operation condition of a machine having a rotating shaft;
• acquiring a measurement value of a shaft vibration value of the rotating shaft under the operation condition indicated by the process data;
• creating a shaft vibration calculation model of the rotating shaft;
• calculating the shaft vibration value corresponding to the operation condition of a predetermined range using the shaft vibration calculation model;
• and
• creating a determination model for determining a normal value of the shaft vibration value according to the operation condition on the basis of the process data, the measurement value of the shaft vibration value, the calculated shaft vibration value, and the process data indicating the operation condition corresponding to the shaft vibration value.

A non-transitory computer readable medium storing a program for causing a computer to execute a process comprising:

• acquire process data indicating an operation condition of a machine having a rotating shaft;
• acquire a measurement value of a shaft vibration value of the rotating shaft under the operation condition indicated by the process data;
• and
• evaluate the measurement value of the shaft vibration value on the basis of a determination model for determining a normal value of the shaft vibration value according to the operation condition created on the basis of the shaft vibration value measured during an operation of the machine and the shaft vibration value calculated on the basis of a predetermined shaft vibration calculation model, the process data, and the measurement value of the shaft vibration value.

A non-transitory computer readable medium storing a program for causing a computer to execute a process comprising:

• acquire process data indicating an operation condition of a machine having a rotating shaft;
• acquire a measurement value of a shaft vibration value of the rotating shaft under the operation condition indicated by the process data;
• create a shaft vibration calculation model of the rotating shaft;
• calculate the shaft vibration value corresponding to the operation condition of a predetermined range using the shaft vibration calculation model;
• and
• create a determination model for determining a normal value of the shaft vibration value according to the operation condition on the basis of the process data, the measurement value of the shaft vibration value, the calculated shaft vibration value, and the process data indicating the operation condition corresponding to the shaft vibration value.