Method and Apparatus for Stall Detection
AssigneePG Drives Technology Limited
InventorRichard Trevor Gears
Life of this patent
Estimating the term…
Abstract
Stall detection apparatus for an electric motor controller has an input for receiving a drive error flag indicating if the controller is unable to achieve the required motor velocity and an input for receiving a signal in order to measure, directly or indirectly, the actual motor velocity. The actual motor velocity is determined in order to indicate whether the motor is stationary and, only if so, a stall signal is outputted in order to indicate that said motor has stalled.
Claims11
Stall detection apparatus for an electric motor controller, the apparatus comprising:
- an input for receiving a drive error flag indicating if the controller is unable to achieve the required motor velocity;
- an input for receiving a signal measuring, directly or indirectly, the actual motor velocity;
- and
- means for determining if said actual motor velocity is indicative that said motor is stationary and, only if so, outputting a Stall signal indicating that said motor has stalled.
A method for stall detection in respect of an electric motor, the method comprising:
- receiving flag indicating if the controller is unable to achieve the required motor velocity;
- receiving a signal measuring, directly or indirectly, the actual motor velocity;
- and
- determining if said actual motor velocity is indicative that said motor is stationary and, only if so, outputting a “Stall” signal indicating that said motor has stalled.
Dependencies are inferred from the claim text.