Patent ID: 11972642
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The rotating machinery diagnosis and monitoring system according to claim 2,
wherein the areas are set in the two-dimensional graph defined by the vibration values and the rotation speeds in a way that,
a first upper limit and a first lower limit of a rotation speed are set with a boundary between the first area and another area,
a second upper limit and a second lower limit of the rotation speed are set in rotation speed positions located farther away from the first area than the first upper limit and the first lower limit of the rotation speed,
a first upper limit and a first lower limit of a vibration value are set to define a most normal area as a vibration value in a critical speed, and
a second upper limit and a second lower limit of the vibration value are set in vibration value positions located farther than the first upper limit and the first lower limit of the vibration value.