Method of improving the landing of a hydraulic elevator car

Details Method of improving the landing of a hydraulic elevator car Method of improving the landing of a hydraulic elevator car

B - Operations, Transporting

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B66B 1/40 (2006.01) B66B 1/04 (2006.01) B66B 1/24 (2006.01) B66B 1/44 (2006.01) B66B 1/50 (2006.01)

Patent

CA 2010244

A method of improving the landing of a hydraulic elevator car which responds to slowdown and leveling indicia associated with each floor of a building served by the car. The method, which utilizes signals which are already generated relative to the car traveling past slowdown and leveling indicia, provides an optimum deceleration time TOPT for the car to initiate deceleration and arrive at a leveling zone of a target floor, defined by leveling indicia. The method further delays the initiation of deceleration of the car, after the car reaches slowdown indicia far the target floor, by a predetermined time delay Td. The method determines the actual time TACT for the car to travel between slowdown and leveling indicia for the target door, and then changes Td, if necessary, in a direction which tends to optimize Td, when TACT - Td is not equal to TOPT.

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