The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2016
Filed:
Jul. 02, 2013
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Mitsubishi Electric Corporation, Chiyuda-ku, Tokyo, JP;
Mouhacine Benosman, Boston, MA (US);
Daiki Fukui, Tokyo, JP;
Seiji Watanabe, Tokyo, JP;
Daisuke Nakazawa, Tokyo, JP;
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
A method reduces a sway of an elevator rope supporting an elevator car by controlling a tension of the elevator rope. The tension is controlled using a movement of the elevator sheave according to a control law of the tension of the elevator rope between two points. The first point is associated with a contact of the elevator rope with the elevator sheave. The second point is associated with a contact of the elevator rope with the elevator car or a counterweight of the elevator car. The control law is a function of one or combination of a relative position, a relative velocity and a relative acceleration between the first and the second points.