Method and system for fail-safe motor operation
AssigneeDEKA Products Limited Partnership
InventorsDean Kamen, John B. Morrell, David W. Robinson, Ronald K. Reich, John David Heinzmann, Philip LeMay, Steven R. Meyer, Jason M. Sachs, J. Douglas Field
Life of this patent
Estimating the term…
Abstract
An electric device includes a motor and a motor drive for commanding a torque generated by the motor. A fault control circuit detects a fault condition associated with the motor drive. Upon detection of the fault condition, the fault control circuit adjusts the torque commanded by the motor drive.
Claims28
An electric device comprising:
- a motor;
- a motor drive for commanding a torque generated by the motor;
- and
- a fault control circuit for detecting a fault condition associated with the motor drive, the fault control circuit adjusting the torque commanded by the motor drive upon detection of the fault condition.
An electric device comprising:
- a motor having a first winding set and a second winding set;
- and
- a fault control circuit for decoupling one of the first winding set and the second winding set from all circuitry based at least on a fault condition.
A method for controlling an electric device, the electric device including a motor, the motor having a winding set, the method comprising:
- detecting a fault condition associated with the winding set;
- and
- decoupling the winding set from all circuitry based at least on the fault condition.
A method for controlling an electric device, the electric device including a motor driven by a motor drive, the method comprising:
- detecting a fault condition associated with the motor drive;
- and
- reducing fault torque commanded by the motor drive based at least on the fault condition.
Dependencies are inferred from the claim text.