SYSTEM FOR CONTROLLING ELECTRIC MOTORS USED FOR THE PROPULSION OF A TRANSPORT TROLLEY

摘要

A system is described for the controlled propulsionof a transporting device which consists of at least twodrive wheels propelled by electromotive means, in whichsystem at least two drive wheels are each propelled byindependent electric motors; each electric motor receiveselectric power through an independent power amplifierwhich amplifies electrical signals produced by sensormeans; the sensor means detect a mechanical force appliedon a push and pull element, and convert said mechanicalforce into electrical signals which indicate the degreeand the direction of the mechanical force applied on saidpush and pull element; and the amplifier amplifies thesignal in accordance with a factor which is a function ofthe weight that the trolley has to move and it feeds theelectric motor so it can power the drive motor inaccordance with a torque corresponding to the movementordered through the sensor means.