Door Drive Control with Dynamic Dwell Time Adjustment
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Solution Overview
Problem
Existing door drives for building structures, particularly swing doors, face issues with mechanical play and back pressure causing doors not to seal properly when in the 'CLOSED' position, leading to drafts and increased manual effort for closure.
Innovation Solution
A door drive system that includes a position sensor to detect manual movement and adjust the closing speed, allowing for parallel operation of automatic and door closer modes with customizable hold-open times, ensuring accurate positioning and automatic closure even when doors are slightly ajar due to mechanical play or external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the door drive operates in automatic mode with a single dwell time setting, then the system is simple to operate, but it cannot accommodate different usage scenarios requiring different hold-open durations
Solution Approach 1:
The door drive system dynamically adjusts the dwell time based on the detected operating mode. The control unit automatically selects between a first dwell time for door closer mode and a second dwell time for automatic mode, eliminating the need for manual configuration while adapting to different usage scenarios
Solution Approach 2:
The system automatically detects the operating mode through position sensor feedback and self-configures the appropriate dwell time without user intervention. The control unit monitors door position and movement characteristics to determine whether door closer mode or automatic mode is active, then autonomously applies the correct timing parameter
2Manufacturing precision
If the door drive uses a fixed closing speed, then the motor performance is simplified, but it cannot properly handle both manual operation correction and automatic positioning requirements
Solution Approach 1:
The motor control system dynamically adjusts closing speed based on the operating mode. In door closer mode, a first closing speed is applied to handle manual operation corrections, while in automatic mode, a second closing speed optimizes positioning accuracy. The control unit switches between these speeds based on real-time mode detection
Solution Approach 2:
The system changes the motor control parameters (closing speed) according to the detected operating mode. The control unit modifies velocity commands to the motor based on whether the system is in door closer mode or automatic mode, optimizing performance for each scenario without requiring complex mechanical adjustments
3Ease of operation
If the door drive operates only in door closer mode, then manual operation is fully supported, but automatic opening and closing functionality is lost
Solution Approach 1:
The door drive system is designed to perform multiple functions through parallel operation of door closer mode and automatic mode. The control unit can detect and respond to both manual operation inputs and automatic triggering signals, enabling the single system to serve both manual and automated applications without requiring separate mechanisms
Solution Approach 2:
The system dynamically switches between door closer mode and automatic mode based on the type of input received. When manual operation is detected, door closer mode activates to support full manual control. When automatic triggering is detected, automatic mode activates to enable automated opening and closing cycles
Data Source
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AI summary
The invention relates to a method for actuating a building door having a door drive. In order to make manual actuation more comfortable, the invention provides for a method for operating a door drive (14) connected to a door leaf (18) of a building door (10), comprising the step of assigning and/or carrying out different control times for different operating modes and/or different control signals.