Patent ID: 11932122
Assignee: TRANSPORTATION IP HOLDINGS, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method comprising:
determining whether measured operating conditions of a vehicle system match at least one of plural different sets of designated operating conditions, the measured operating conditions of the vehicle system including a motor speed and a motor torque, the different sets of the designated operating conditions including different combinations of different designated motor speeds and different motor torques;
responsive to determining that the measured operating conditions of the vehicle system match at least one of the different sets of the designated operating conditions, determining one or more fault frequencies associated with the at least one of the different sets of the designated operating conditions that match the measured operating conditions of the vehicle system;
determining whether a frequency peak of an alternating current (AC) that is fed to a motor of the vehicle system matches the one or more fault frequencies associated with the at least one of the different sets of the designated operating conditions that matches the measured operating conditions of the vehicle system;
determining a mechanical fault of the motor responsive to determining that the frequency peak of the AC matches the one or more fault frequencies associated with the at least one of the different sets of the designated operating conditions; and
changing movement of the vehicle system responsive to the mechanical fault being determined.