Elevator ride quality

Details Elevator ride quality Elevator ride quality

B - Operations, Transporting

66

B

B66B 1/00 (2006.01) B66B 7/02 (2006.01) B66B 7/04 (2006.01)

Patent

CA 2080533

ABSTRACT Rail learning is combined with feedback in a control for improving ride quality in an elevator. For example, a pre-stored signal indicative of a horizontal deviation of the rail's surface from a vertical reference is retrieved and used along with a sensed signal indicative of a horizontal position (or other parameter indicative of a disturbance of the elevator) relative to the rail's surface (or a reference) for controlling an actuable horizontal suspension for reducing horizontal disturban- ces of the elevator while guiding an elevator vertically in a hoistway along a rail. As another example, a sensed force signal is averaged over a plurality of trips under differing load conditions and the average is pre-stored for retrieval at various vertical points in the hoistway and may be used, in combination with a feedback loop, to predict horizontal forces about to act on the car.

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