CORRECTING THE HORIZONTAL DEVIATIONS OF AN ELEVATOR CAR DURING VERTICAL TRAVEL

摘要

Elevator horizontal vibrations are activelycontrolled by retrieving data stored in memory indicativeof the out-of-straightness of the elevator car's guiderails. The stored data is compiled during a learning runby summing the car's relative displacement with respectto the rail with a doubly integrated acceleration signalindicative of the car's deviation from true vertical.