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1. WO1985000147 - APPARATUS FOR CONTROLLING FORKLIFT

Publication Number WO/1985/000147
Publication Date 17.01.1985
International Application No. PCT/JP1984/000328
International Filing Date 25.06.1984
IPC
H02P 7/29 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18by master control with auxiliary power
24using discharge tubes or semiconductor devices
28using semiconductor devices
285controlling armature supply only
29using pulse modulation
CPC
H02P 7/29
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18by master control with auxiliary power
24using discharge tubes or semiconductor devices
28using semiconductor devices
285controlling armature supply only
29using pulse modulation
Applicants
  • HITACHI, LTD. [JP]/[JP] (DE)
  • KIKUCHI, Seiki [JP]/[JP] (UsOnly)
  • YAMAGUCHI, Kuniaki [JP]/[JP] (UsOnly)
Inventors
  • KIKUCHI, Seiki
  • YAMAGUCHI, Kuniaki
Agents
  • TAKAHASHI, Akio
Priority Data
58/11437627.06.1983JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) APPARATUS FOR CONTROLLING FORKLIFT
(FR) DISPOSITIF DE COMMANDE D'UN CHARIOT ELEVATEUR A FOURCHE
Abstract
(EN)
A travel DC motor (12) and a loading DC motor (18) are connected to a common battery power source (10). The motor (12) is supplied with current through a transistor chopper (28) whose on/off operation is controlled, and the motor (18) is supplied with current through a thyristor chopper (32). The transistor chopper (28) and the thyristor chopper (32) are repeatedly turned on and off in response to pulse signals P1, P2, P3 generated by chopper control circuits (30), (47). When the thyristor chopper (32) is on, the chopper control circuit (30) keeps the transistor chopper (28) off in response to an inhibition signal Va.
(FR)
Un moteur à courant continu de déplacement (12) et un moteur à courant continu de chargement (18) sont reliés à une source d'alimentation commune à accumulateur (10). Le moteur (12) est alimenté en courant au travers d'un circuit hacheur à transistor (28) dont on commande la mise sous/hors tension, et le moteur (18) est alimenté en courant par l'intermédiaire d'un circuit hacheur à thyristor (32). Le circuit hacheur à transistor (28) et le circuit hacheur à thyristor (32) sont mis sous tension et hors tension de manière répétée en réponse à des signaux d'impulsions P1, P2, P3 produits par les circuits de commande (30), (47) des circuits hacheurs. Lorsque le circuit hacheur à thyristor (32) est sous tension, le circuit de commande (30) de circuit hacheur maintient le circuit hacheur à transistor (28) hors tension en réponse à un signal d'inhibition Va.
Also published as
DE3490306
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