EP 0467673 A3 19930310 - ELEVATOR ACTIVE SUSPENSION SYSTEM
Title (en)
ELEVATOR ACTIVE SUSPENSION SYSTEM
Publication
Application
Priority
- US 55513090 A 19900718
- US 55513190 A 19900718
- US 55513290 A 19900718
- US 55513390 A 19900718
- US 55513590 A 19900718
- US 55514090 A 19900718
- US 73118591 A 19910716
Abstract (en)
[origin: EP0467673A2] A method and apparatus for actively counteracting a disturbing force (14) acting horizontally on a platform (10) moving vertically in a hoistway is disclosed. A manifestation of the disturbing force (10) such as acceleration is sensed (16) and counteracted (26), for example, by effectively adding mass to the platform (10) in proportion to the magnitude of the sensed signal (18). The frequency of the sensed signal (18) may be taken into account. Rotational disturbances or horizontal components or manifestations thereof may also be counteracted. These may be accomplished by using an electromagnetic actuator or spring/solenoid activated wheels (24) for actuating the platform (10) in response to a control signal from a control means (20) which is in turn responsive to the sensed signal (18). Regardless of the actuator (24) selected, it may be used as well to bring the platform (10) to rest with respect to a hoistway sill prior to transferring passengers. The control means (20) may be analog or digital or a combination of both. A preferred analog-digital approach is disclosed in which the digital part is responsive to accelerometer signals, the analog part is responsive to a force command signal from the digital part and provides a position feedback signal in return. In a preferred embodiment, four electromagnetic actuators or two opposed wheel clusters are situated near the bottom of the platform (10). Each electromagnetic actuator may act along a line which intersects the walls of the car at a forty-five degree angle. A single axis embodiment is also disclosed. A plural-bladed rail is also disclosed. <IMAGE>
IPC 1-7
IPC 8 full level
B66B 7/02 (2006.01); B66B 7/04 (2006.01); B66B 11/02 (2006.01)
CPC (source: EP)
B66B 7/022 (2013.01); B66B 7/042 (2013.01); B66B 7/046 (2013.01); B66B 11/0286 (2013.01)
Citation (search report)
- [AD] US 4754849 A 19880705 - ANDO HIROSHI [JP]
- [AD] GB 2181275 A 19870415 - ELEVATOR GMBH
- [AD] EP 0367621 A1 19900509 - OTIS ELEVATOR CO [US]
- [A] EP 0350582 A1 19900117 - INVENTIO AG [CH]
- [A] GB 1030728 A 19660525 - OTIS ELEVATOR CO
- [X] DATABASE WPIL Week 9030, Derwent Publications Ltd., London, GB; AN 90-224718 & FI-A-8 804 830 (KONE ELEVATOR GMBH) 29 March 1990
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0467673 A2 19920122; EP 0467673 A3 19930310; EP 0467673 B1 19971001; DE 69127786 D1 19971106; DE 69127786 T2 19980115; HK 1004914 A1 19981211; SG 92600 A1 20021119
DOCDB simple family (application)
EP 91306517 A 19910718; DE 69127786 T 19910718; HK 98100575 A 19980122; SG 1996005678 A 19910718