Adjustable Gear Ratio for Automatic Gate Drive Control
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Solution Overview
Problem
Existing manufacturing methods for automatically driven gates require extensive adjustment and complex learning processes to ensure safe and reliable operation, particularly in setting the reversing limit, due to varying gear ratios between the gate shaft and leaf, which complicates control and monitoring.
Innovation Solution
A manufacturing method that adjusts the drive gear ratio in the wave gate drive to maintain a constant overall gear ratio between the motor shaft and door leaf movement within specific tolerance limits, allowing for simplified control and monitoring by calculating the reversing limit based on the known gear ratio, thereby reducing the need for complex teaching processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the gear ratio is adjusted for different gate fittings, then the adaptability to different gate types is improved, but the overall gear ratio consistency deteriorates
Solution Approach 1:
The patent applies parameter changes by adjusting the drive gear ratio based on the specific gate fitting type. Different gear ratios are selected according to the gate leaf weight and dimensions, allowing the system to adapt to various gate configurations while maintaining optimal performance characteristics.
Solution Approach 2:
The system implements dynamic adjustment of the drive gear ratio through selectable gear configurations. The gate drive can switch between different gear ratios during operation or be configured differently for different gate types, enabling the system to dynamically adapt to changing operational requirements while maintaining consistent control behavior.
2Reliability
If extensive adjustment and learning processes are implemented, then the operational reliability is improved, but the device complexity and time consumption increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the drive gear ratio according to the gate fitting type before operation. The system performs initial learning processes during installation to establish the relationship between motor revolutions and gate leaf position, storing this information for subsequent operations. This eliminates the need for extensive adjustments during regular operation.
Solution Approach 2:
The system implements feedback mechanisms to monitor the gate leaf position and motor shaft revolutions. By continuously comparing the actual position with the expected position based on the learned gear ratio, the system can detect deviations and make automatic corrections, thereby maintaining operational reliability without requiring complex manual adjustment procedures.
3Ease of operation
If the gear ratio varies for different gate fittings, then the ease of operation for specific gate types is improved, but the monitoring and control difficulty increases
Solution Approach 1:
The patent introduces an intermediary element in the form of a learned gear ratio parameter that mediates between the motor shaft and gate leaf position. This intermediary allows the control system to translate motor revolutions into accurate gate position information regardless of the specific gate fitting type, thereby simplifying monitoring and control while maintaining ease of operation for different gate configurations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies the operation and monitoring of automatically driven gates by maintaining a consistent gear ratio, ensuring safe and reliable door closure and reducing the risk of incorrect obstacle detection, while allowing for easier adaptation to different gate fittings and sizes.
Implementation Method 1
The endless traction mechanism formed in this way is designed as a positive transmission and is therefore slip-free. For example, toothed belt transmissions or - preferably - chain transmissions come into consideration.
Data Source
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AI summary
The invention provides a production method for producing an automatically driven door (10), which has a door leaf (12), a door shaft (16), a door mechanism (18), by means of which the door leaf (12) is connected to the door shaft (16) in such a manner that the door shaft (16) rotates during movement of the door leaf and that the door leaf moves during rotation of the door shaft (16), and a shaft-type door drive (20) which is connected to the door shaft (16) for driving same, with the following steps: providing and installing the door with a door shaft (16) and door mechanism (18), providing a shaft-type door drive (20) which has an electric motor and an output shaft (54) which is drivable via the electric motor via a slip-free driving mechanism (52A, 52B, 52C, 52D) and is connectable to the door shaft, wherein the transmission ratio (i) of the driving mechanism (52A, 52B, 52C, 52D) is adjustable in a selectable manner step by step, selecting the transmission ratio (i) depending on the particular door mechanism (18) in such a manner that, at least in the vicinity of the final closing position, the path of the door leaf (12) in different door mechanisms (18) per revolution of the electric motor is substantially constant in such a manner a) that said path lies within the tolerance range of +25%, preferably of +/- 15%, about a constant standard value, and/or b) that said path lies in the tolerance range of less than 40%, preferably of less than 36%, most preferably of less than 30%, below a constant upper limit standard value.