Calibration routine with adaptive load compensation

US5777280A · kind A · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Burkhard Braasch · Berlin, DE
• Marvin Dehmlow · Berlin, DE
• Jurgen Dieluweit · Berlin, DE
• Christoph M. Ernecke · Berlin, DE
• Thomas Gietzold · Wethersfield, US
• Alberto Vecchiotti · Berlin, DE

Key dates

• Filing date: Aug 27, 1996
• Grant date: Jul 7, 1998
• Expiry date: Aug 27, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B1/44
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A load compensation calibration method for an elevator controller includes the steps of moving an elevator car in a first direction, the first direction a first creep speed region; determining the time to travel a given distance; during the first run; determining a first actual creep speed of the first creep speed region; determining a difference between a dictated creep speed and the first actual creep speed; determining a first compensation frequency for minimizing the difference between the dictated creep speed and the first actual creep second; moving the elevator car in a second direction, the speed direction including a second creep speed region; determining the time to travel a given distance during the second run; determining a second actual creep speed of the second creep speed region; determining a difference between a dictated creep speed and the second actual creep speed; determining a second compensation frequency for minimizing the difference between the dictated creep speed and the second actual creep speed; and creating a load compensation characteristic in response to the time to travel a given distance and the first and second compensation frequencies.