Simultaneous independent control system for electric motors

Details Simultaneous independent control system for electric motors Simultaneous independent control system for electric motors

1980-07-03

1982-07-27

Truhe, J. V.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Plural, diverse motor controls for different motors

318 67, 318 87, 318 91, 318107, 318108, 318109, 318110, 104300, 104301, 10302, H02P 768

Patent

active

043419828

ABSTRACT:
A system for simultaneously and independently controlling a plurality of electric motors from a number of dispersed stations. The system operates by transmission of duty cycle modulated selected frequencies superimposed on a DC track voltage on a common power line servicing the motors. The modulation is variable and determines the speed of the motors. Transmitters are portable and designed removably to plug into a common signal transmission cable anywhere along its length without interaction. Receivers, each tuned to a specific frequency and associated with and controlling a motor, are coupled to the common power line.

REFERENCES:
patent: 3211111 (1965-10-01), Morley
patent: 3315613 (1967-04-01), Leslie
patent: 3909618 (1975-09-01), Fujii et al.
patent: 4290000 (1981-09-01), Sun

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