Patent ID: 8424650
Filing Date: 2013-04-23
Classification: B66B

Abstract:
1. A method for controlling a motion of a first car and a second car in a multi-car elevator system, wherein the first car and the second car move independently in an elevator shaft, comprising the steps of: determining alternately motion plans for the first car and the second car wherein each part of a motion plan for the first car is determined for a planning period of the first car, wherein a beginning of the planning period of the first car is determined by an end of the planning period of the second car, and an end of the planning period of the first car is determined by a home position of the first car on the motion plan, wherein the part of the motion plan is determined based on motion constraints, a set of requests, and the motion plan of the second car determined by the beginning of the planning period of the first car; and generating a command to control the motion of the elevator cars based on the motion plans.