EP 1584597 A1 20051012 - ELEVATOR CONTROL SYSTEM
Title (en)
ELEVATOR CONTROL SYSTEM
Title (de)
AUFZUGSSTEUERSYSTEM
Title (fr)
SYSTEME DE COMMANDE D'ASCENSEUR
Publication
Application
Priority
JP 0212537 W 20021129
Abstract (en)
In an elevator including: an electric motor for rotating a sheave wounded with a main rope suspending an elevator car and a counterweight to move the electric car; a controller for driving the electric motor; an electromagnetic brake for stopping the elevator car to hold the elevator car in a stationary state; and an encoder for detecting rotation of the electric motor, when in a state in which after the elevator car is stopped at a certain hall, a door of the elevator car is opened to permit passengers to get on and off the elevator car, while the electromagnetic brake is in operation, a standstill holding force of the electromagnetic brake is insufficient to permit the elevator car to start a little movement, and thus an rotational angle of the electric motor is detected by the encoder, the controller controls the driving of the electric motor so as to generate a torque used to prevent the rotation of the electric motor. <IMAGE>
IPC 1-7
IPC 8 full level
B66B 1/32 (2006.01); B66B 1/44 (2006.01); B66B 5/02 (2006.01)
CPC (source: EP KR)
B66B 1/30 (2013.01 - EP); B66B 1/32 (2013.01 - KR); B66B 1/44 (2013.01 - KR); B66B 5/02 (2013.01 - EP KR)
Citation (search report)
See references of WO 2004050523A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1584597 A1 20051012; CN 1625519 A 20050608; JP WO2004050523 A1 20060330; KR 20040099428 A 20041126; WO 2004050523 A1 20040617
DOCDB simple family (application)
EP 02785990 A 20021129; CN 02828801 A 20021129; JP 0212537 W 20021129; JP 2004556784 A 20021129; KR 20047016208 A 20021129