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1. (WO1979000714) MOTOR SPEED CONTROLLING CIRCUIT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000714 International Application No.: PCT/JP1979/000050
Publication Date: 04.10.1979 International Filing Date: 28.02.1979
IPC:
H02P 7/288 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
P
CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS OR REACTORS OR CHOKE COILS
7
Arrangements for regulating or controlling the speed or torque of electric dc-motors
06
for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18
by master control with auxiliary power
24
using discharge tubes or semiconductor devices
28
using semiconductor devices
285
controlling armature supply only
288
using variable impedance
Applicants:
Inventors:
Priority Data:
78/2310928.02.1978JP
Title (EN) MOTOR SPEED CONTROLLING CIRCUIT
(FR) CIRCUIT DE COMMANDE DE VITESSE D"UN MOTEUR
Abstract:
(EN) A resistor (R) is connected between a power source (Vcc) and an input terminal (1) of a motor speed controlling circuit (200"), and a motor of internal resistance (Ra) is connected between an output terminal (2) and the power source (Vcc). In the circuit (200"), a constant current source (8) and a reference voltage generator circuit (9) are connected to the input terminal (1), so that the output voltage of the generator circuit (9) is applied to a reference terminal (a) of an error amplifier (10) and the output voltage of the output terminal (2) is applied through a resistor (R11) to a comparator terminal (B). This circuit (200") controls so as to provide the relationship, represented by a formula (Alpha)V = I3(R11 + Ra), between the difference voltage (Alpha)V cross the terminals (a) and (b) of the amplifier (10) and the current I3 flowing through the resistor (R11). Thus, the motor speed is maintained constant with respect to not only the load but power voltage variations by controlling the current of the output terminal of the circuit (200"), that is, the motor current by means of the output of the amplifier (10).
(FR) Une resistance (R) est connectee entre une source d"alimentation (Vcc) et une borne d"entree (1) d"un circuit de commande de vitesse d"un moteur (200"), et un moteur de resistance interne Ra est connecte entre une borne de sortie (2) et la source d"alimentation (Vcc). Dans le circuit (200"), une source de courant constant (8) et un circuit generateur de tension de reference (9) sont connectes a la borne d"entree (1), de sorte que la tension de sortie du circuit generateur (9) soit appliquee sur une borne de reference (a) d"un amplificateur d"erreur (10) et que la tension de sortie de la borne de sortie (2) soit appliquee au travers d"une resistance (R11) sur une borne comparatrice (b). Ce circuit de commande (200") est tel que l"on ait une relation entre la tension differentielle (Alpha) V entre les bornes (a) et (b) de l"amplificateur (10) et le courant 13 circulant a travers la resistance (R11), relation s"exprimant par la formule (Alpha) V = I3(R11 + Ra). Ainsi, la vitesse du moteur est maintenue constante, non seulement par rapport a la charge mais egalement par rapport aux variations de la tension d"alimentation en controlant le courant a la borne de sortie du circuit (200"), c"est-a-dire, le courant du moteur par l"intermediaire de la sortie de l"amplificateur (10).
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US4345189