Anti rollback system for an electric motor and method therefor

Details Anti rollback system for an electric motor and method therefor Anti rollback system for an electric motor and method therefor

B - Operations, Transporting

60

L

B60L 7/26 (2006.01) B60L 15/20 (2006.01) H02P 3/04 (2006.01) H02P 3/06 (2006.01)

Patent

CA 2359393

The present method and system allows minimization of a rollback effect when an electric vehicle, such as a wheelchair, brakes on a slope. The system comprises secondary brake means, a controller, and a monitoring means that allows to apply both a control voltage and the secondary brakes according to an appropriate sequence to provide stops and starts with a minimized rollback effect. An updated armature resistance value is advantageously used to take into account evolutive conditions of the vehicle.

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