Method and device for controlling a door/gate drive

Details Method and device for controlling a door/gate drive Method and device for controlling a door/gate drive

2004-02-20

2010-02-23

Benson, Walter (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

C318S257000, C318S469000

Reexamination Certificate

active

07667425

ABSTRACT:
The invention relates to a method and a device for controlling an electric door drive. During a learning process determination of the course over time of the torques of the door drive for each of at least one opening process and closing process is carried out. Maximum permissible torques are derived from the ascertained torques for predetermined zones within an opening process and closing process. During operation of the door drive a comparison of the current torque with the maximum torques and a comparison of the current speeds of the door drive with predetermined target speeds are carried out. The current speed of the door drive is increased if the associated target speed is fallen below. In addition, switching-off the door drive takes place if the current torque exceeds the associated maximum torque.

REFERENCES:
patent: 5770934 (1998-06-01), Theile
patent: 6051945 (2000-04-01), Furukawa
patent: 6249097 (2001-06-01), Frey et al.
patent: 6366042 (2002-04-01), Gerbetz
patent: 6404158 (2002-06-01), Boisvert et al.
patent: 1255456 (2000-06-01), None
patent: 42 14 998 (1993-11-01), None
patent: 196 28 238 (1998-01-01), None
patent: 197 00 828 (1998-07-01), None
patent: WO 00/42687 (2000-07-01), None
patent: WO 01/18624 (2001-03-01), None
Chinese Thesis Paper entitled “Development of a variable frequency speed control system for an elevator door”, Jan. 20, 2002, pp. 29, 30, 33-37, 56-58.
Office Action from corresponding Chinese Application No. 200480006661.X dated May 12, 2008.

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