Elevator rope sway estimation

摘要

A method determines a sway of an elevator rope during an operation of an elevator system. The method includes acquiring at least one measurement of a motion of the elevator rope during the operation of the elevator system; and determining the sway of the elevator rope connecting an elevator car and a pulley based on an interpolation between boundaries of the elevator rope based on the measurement of the motion.

主权项

1. A method for determining a sway of an elevator rope during an operation of an elevator system, comprising:
sensing, by a sensor at a time instant, a motion of the elevator rope during the operation of the elevator system to produce a measurement of the motion at a location between boundaries of the elevator rope, if the sensor detects the motion of the elevator rope; and determining, if the sensor detects the motion of the elevator rope, the sway of the elevator rope over an entire length of the elevator rope connecting an elevator car and a pulley using an interpolation between the boundaries of the elevator rope based on the measurement of the motion, wherein the interpolation includes one or combination of a curve fitting and a B-spline interpolation between the boundaries of the elevator rope and the measurement of the motion; and otherwise approximating the sway of the elevator rope over the entire length of the elevator rope connecting the elevator car and the pulley based on a model of the elevator system with initial conditions including the measurement of the motion at the location between boundaries of the elevator rope determined at a previous time instant, wherein steps of the method are performed using a processor.