Method of operating a swing door, device for operating a swing door and a swing door operated by such a method and/or having such a device

A swing door comprising:

• a door leaf having a predetermined closed position and a predetermined open position;
• a sensor connected with the door leaf, the sensor detecting a current position of the door leaf and an applied torque on the door leaf;
• a control unit connected to the sensor, the control unit calculating a drive torque;
• and
• a drive connected to the control unit, wherein the control unit causes the drive to apply the drive torque to the door leaf,
• wherein the control unit sets the drive torque to a first torque to move the door leaf from the closed position to the open position,
• wherein the control unit sets the drive torque to a second torque to maintain the door leaf in the open position,
• wherein the sensor detects that the current position is different from the open position and that the door leaf is subject to the applied torque due to an external force,
• wherein the control unit calculates a third torque as a difference between the second torque and the applied torque and sets the drive torque to the third torque to maintain the current position of door leaf in the open position while it is subject to the external force.

A method for operating a swing door comprising a door panel, a control unit, a sensor connected with the control unit and the door panel, the sensor determining a current position of the door panel and an applied torque on the door panel, and an electro-mechanical drive connected with the control unit and the door panel, wherein the control unit computes a drive torque and controls the electro-mechanical drive to apply the drive torque to the door panel so as to move the door panel, the method comprising:

• (a) setting, by the control unit, the drive torque to a first torque to energize the electro-mechanical drive to apply the first torque to the door panel, wherein the first torque moves the current position of the door panel from a predetermined closed position to a predetermined open position;
• (b) setting the drive torque to a second torque and energizing the electro-mechanical drive, wherein the second torque maintains the door panel in the open position;
• (c) detecting, by the sensor, that the current position of the door panel has moved away from the open position and that the door panel is subject to the applied torque due to an external force;
• (d) calculating, by the control unit based on the current position of the door panel and the applied torque, a third torque as a difference between the second torque and the applied torque;
• and
• (f) setting the drive torque to the third torque to maintain the current position of door panel in the open position while it is subject to the external force.