Patent ID: 6334511
Filing Date: 2002-01-01
Classification: B66B,Y10S

Abstract:
A double-deck elevator control system comprising:a car frame retaining two elevator cars such that the two elevator cars may be vertically moved relative to the car frame; a first control unit for controlling movement of the car frame; an actuator for vertically moving the two elevator cars equal intervals in opposite directions with respect to the car frame; a second control unit for controlling the actuator; a remaining travel distance computing unit for computing remaining travel distances of the car frame and of the two elevator cars from current positions of each of the car frame and the two elevator cars, to planned stopping positions; and a speed command generating unit for generating a first speed command value based on travel distance of the car frame and outputting the first speed command value to the first control unit, and for generating a second speed command value based on the remaining travel distance of each of the elevator cars and outputting the second speed command value to the second control unit, wherein the first control unit controls movement of the car frame based on the first speed command value, the second control unit controls the actuator based on a difference between the first and second speed command values, and while the car frame and the two cars are decelerating, the first speed command value is calculated as a mean value of respective speed command values for the two cars.