Control device for a DC motor intended for in particular driving

Details Control device for a DC motor intended for in particular driving Control device for a DC motor intended for in particular driving

1989-01-12

1990-08-28

Shoop, Jr., William M.

Electricity: motive power systems

Plural diverse motor controls

Motor-reversing

318778, H02P 100

Patent

active

049528548

ABSTRACT:
A motor control devise including an auxiliary resistor in series with the motor, a relay, including a coil for activation thereof for shorting the resistor, voltage terminals for determining the current in the auxiliary resistor and the voltage in the supply line, a microprocessor programmed to calculate the sum of the resistance of the supply line and the internal motor resistance, a time delay in energizing the relay for shorting the resistor immediately after the calculation of the resistances, and wherein the microprocessor is programmed to calculate instantaneous values of speed and torque of the motor.

REFERENCES:
patent: 3733532 (1973-05-01), Hill
patent: 4641074 (1987-02-01), Hamilton, Jr. et al.
patent: 4642537 (1987-02-01), Young
patent: 4780773 (1988-10-01), Hama

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