Patent
Control means for electrically powered transportation means
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TLDR
In this paper, a steering control for an electrically powered vehicle having a pair of traction wheels on each side of the vehicle's frame, each of said wheels being driven by a synchronous type motor is described.Abstract:
A steering control for an electrically powered vehicle having a pair of traction wheels on each side of the vehicle's frame, each of said wheels being driven by a synchronous type motor. The rotor field producing coils of each motor being separately controlled by the accelerator control of the vehicle and a frequency changing circuit which selectively changes the rotational speed of individual motors. The frequency changing circuit includes frequency divider switches and frequency counters connected to the rotor field producing coils; the wipers of said frequency divider switches are connected to the steering control in such manner as the output of each frequency dividing counter is varied independently. A battery included in such vehicle for producing electric power needed for the motors can be charged by a generator or alternator. Current from the battery to each motor is pulsed, and energy charging the battery from the generator or alternator is also pulsed, the latter pulses being interposed in time between the pulses from the battery to the motors. Steering sensitivity may be changed with an increase in speed by linkage between the accelerator and the frequency divider switches, so that as the speed of the vehicle increases, its turning radius is also changed in response to a given arc of turn of the control steering.read more
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Vehicle electric motor drive system
TL;DR: In this paper, a vehicle is driven by an inductor type synchronous motor coupled to each wheel, a diesel engine on the vehicle, and first and second high frequency rotating generators driven by the diesel engine for providing power to the motors for the front and rear wheels, respectively.