Patent ID: 11905930
Assignee: NABTESCO CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A condition monitoring device for a drive device of a wind turbine, the condition monitoring device comprising:
one or more sensors, the one or more sensors operatively connected to the drive device of the wind turbine and configured to sense information relating to a load applied to each of a plurality of actuators, the plurality of actuators being included in the drive device of the wind turbine and configured to cooperate with each other;
a brake configured to apply a braking force to the plurality of actuators;
a controller having a processor, the controller operatively connected to the drive device of the wind turbine and the one or more sensors, the controller being configured to:
obtain the information from the one or more sensors;
based on the obtained information, calculate a partial load ratio, the partial load ratio representing a ratio of the load on each of the plurality of actuators to a total load, the total load being a sum of the loads on the plurality of actuators;
diagnose a condition of each of the plurality of actuators based on the total load and the calculated partial load ratio;
determine an action to be taken based on the diagnosed condition; and
control the brake based on the diagnosed condition.