Automatic door with position-dependent force limiting
AssigneeHaas Automation, Inc.
InventorsWilliam F. TANDROW, Kurt P. ZIERHUT, Michael A. TEITEL, Symon Man-Yiu TSUI, Michael FECHTNER
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Abstract
A method of controlling the motion of a moveable door includes determining the direction that the door is moving with respect to its anticipated closed position, and based on the direction, regulating an amount of force that is available to the door for its motion. The method may further include monitoring the position of the door as it is moving, and adjusting the motion of the door and regulating the amount of force available to the door for its motion, based on the calculated difference between the door's position as detected during monitoring and its expected position.
Claims35
A method of controlling the motion of a moveable door, comprising:
- determining the direction that the door is moving with respect to a closed position of the door;
- and
- based on the determined direction, regulating an amount of force that is available to the door for its motion.
An automatic door with position-dependent torque limiting, comprising:
- a door configured to have a fully opened position and a closed position;
- a force generating element connected to the door such that force generated by the force generating element is applied to the door to move the door toward its fully opened position or closed position;
- a position sensing device configured to detect a current position of the door, and further configured to generate an output based on the detected current position of the door;
- and
- a control system operatively connected to the force generating element and configured to set acceleration of the door based upon the output from the position sensing device, and further configured to regulate the amount of force generated by the force generating element based upon the generated output from the position sensing device.
A control system for controlling the motion of a moveable door, comprising:
- a direction detector detecting a direction of a door;
- a position detector detecting a current position of the door;
- and
- a control unit operating a force generating element based on signals from the direction and position detectors;
- wherein the control unit is configured to:
- receive a signal from the direction detector indicating which direction the door is moving with respect to a closed position of the door;
- and
- based on the indicated direction, the control unit regulates an amount of force generated by the force generating element.
A computer-readable medium containing computer-executable instructions for performing a method of controlling the motion of a moveable door, the method comprising:
- determining the direction that the door is moving with respect to a closed position of the door;
- and
- based on the determined direction, regulating an amount of force that is available to the door for its motion.
Dependencies are inferred from the claim text.