Position controlled elevator door motion

Details Position controlled elevator door motion Position controlled elevator door motion

B - Operations, Transporting

66

B

364/25

B66B 13/14 (2006.01) B66B 1/16 (2006.01) E05F 15/14 (2006.01) G05D 3/12 (2006.01)

Patent

CA 1165022

Position Controlled Elevator Door Motion Abstract An elevator employing a microprocessor-based cab controller, for controlling, among other things, the opening and closing of the elevator car door, provides a pair of dictated door velocity profile signals and selects the one having the lesser value, to dictate motor current in accordance with the selected desired door motion profile. A first one of the profiles includes acceleration up to a desired maximum velocity, and a second one of the door motion profiles consists of a deceleration profile generated as a function of the distance from the door to a desired target position. An exemplary elevator system and cab controller, along with an exemplary door control program for the cab controller, estab- lishing an environment in which the invention may suitably be practiced, and detailed program steps for effecting the present invention in such an environment are disclosed.

367419

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