Elevator ride quality

Details Elevator ride quality Elevator ride quality

1993-02-16

1994-07-12

Stephan, Steven L.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 1R, 187115, 187 95, 1051821, 104129, B66B 300, B66B 702

Patent

active

053290771

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 disturbances 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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