(19)
(11) EP 0 826 621 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.08.1998 Bulletin 1998/34

(43) Date of publication A2:
04.03.1998 Bulletin 1998/10

(21) Application number: 97114768.1

(22) Date of filing: 26.08.1997
(51) International Patent Classification (IPC)6: B66B 1/44
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 27.08.1996 US 708138

(71) Applicant: OTIS ELEVATOR COMPANY
Farmington, CT 06032 (US)

(72) Inventors:
  • Ernecke, Christoph M.
    14050 Berlin (DE)
  • Braasch, Brukhard
    12589 Berlin (DE)
  • Dehmlow, Marvin
    12159 Berlin (DE)
  • Dieluweit, Jürgen
    13353 Berlin (DE)
  • Gietzold, Thomas
    12279 Berlin (DE)
  • Vecchiotti, Alberto
    middletown, Connecticut 06457 (US)

(74) Representative: Hirsch, Peter 
Klunker Schmitt-Nilson Hirsch Winzererstrasse 106
80797 München
80797 München (DE)

   


(54) Adaptive load compensation for an elevator system


(57) A method of adjusting an elevator creep speed includes the steps of determining an actual creep speed; determining a difference between a dictated creep speed and the actual creep speed; determining a compensation frequency for minimizing the difference between the dictated creep speed and the actual creep speed, the compensation frequency being determined in accordance with a load compensation characteristic; and adjusting the elevator creep speed in response to the compensation frequency.






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