Otis Elevator Company

Cheng-Shuo Wang

Arthur Hsu

Hansoo Shim

Seongrak Jeong

CheongSik Shin

Bruce P Lerner

Cheong Sik Shin

Arthur C Hsu

Cheongsik Shin

A separation distance is maintained between a leading elevator car () and a trailing elevator car () traveling in the same direction in an elevator hoistway (). A shortest stopping distance (d) of the leading elevator car () and a normal stopping distance (d) of the trailing elevator car () are determined. The separation distance (d) is controlled such that a difference between the normal stopping distance (d) of the trailing elevator car () and the shortest stopping distance (d) of the leading elevator car () is greater than or equal to a threshold distance (d).

Multiple car hoistway including car separation control

The movement of a plurality of elevator cars () in an elevator hoistway () is coordinated for situations in which the regions of the hoistway that are serviceable by the cars () at any given time are configured to overlap. A car stop plan for each elevator car () is generated that includes a sequence of stops for servicing demand assigned to the elevator car (). Operation of the elevator cars () is then coordinated based on the car stop plans such that each elevator car () services its assigned demand without interfering with the car stop plans of any other of the plurality of elevator cars ().

Coordination of multiple elevator cars in a hoistway

Growing community of inventors

Ellington, CT, United States of America

Cheng-Shuo Wang