System for controlling electric motors used for the...

Details System for controlling electric motors used for the... System for controlling electric motors used for the...

2005-03-29

2005-03-29

Ellis, Christopher P. (Department: 3618)

Motor vehicles

Power

Electric

C378S198000, C318S628000

Reexamination Certificate

active

06871715

ABSTRACT:
A system is described for the controlled propulsion of a transporting device including at least two drive wheels propelled by electromotive units, in which system at least two drive wheels are each propelled by independent electric motors; each electric motor receives electric power through an independent power amplifier which amplifies electric signals produced by sensor devices; the sensor devices detect a mechanical force applied on a push and pull element, and convert the mechanical force into electric signals which indicate the degree and the direction of the mechanical force applied on the push and pull element, and the amplifier amplifies the signal in accordance with a factor which is a function of the weight that the trolley has to move and it feeds the electric motor so it can power the drive motor in accordance with a torque corresponding to the movement ordered through the sensor devices.

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