Welding Measurement Synchronization Against Multi-Device Interference
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Solution Overview
Problem
Welding processes with multiple devices can experience unstable control due to electromagnetic interference from overlapping welding current circuits, leading to incorrect measurement variables and potential disruptions in the welding process.
Innovation Solution
Implementing synchronization information exchange between welding devices to ignore measurement values during changes in device currents, thereby preventing interference and maintaining a stable welding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple welding devices are used simultaneously in close proximity, then welding productivity increases, but electromagnetic interference between overlapping current circuits causes measurement errors and process instability
Solution Approach 1:
The patent applies preliminary action by having the first welding device transmit synchronization information about its current changes to the second welding device before the interference occurs. This allows the second device to prepare by ignoring measurement values during periods when interference is expected, thus preventing measurement errors before they affect welding stability
Solution Approach 2:
The patent uses synchronization information as an intermediary mechanism between the two welding devices. This information acts as a mediator that coordinates the operation of both devices, allowing them to work simultaneously while maintaining measurement accuracy by signaling when current changes occur that would cause electromagnetic interference
2Productivity
If multiple welding devices operate in the same space, then welding efficiency improves, but electromagnetic coupling between current circuits generates incorrect measurement values
Solution Approach 1:
The patent implements feedback by having the first welding device continuously monitor its own current changes and transmit synchronization information to the second device. The second device uses this feedback to adjust its measurement strategy, ignoring values during periods when the first device's current changes would cause electromagnetic coupling and measurement errors
Solution Approach 2:
The first welding device takes preliminary action by transmitting synchronization information about upcoming current changes before they occur. This allows the second welding device to preemptively avoid using incorrect measurement values during the periods when electromagnetic interference would be present
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 ensures that welding processes remain stable by avoiding the use of incorrect measurement values caused by electromagnetic coupling, allowing for more precise control and improved welding performance even when multiple devices are used simultaneously.
Implementation Method 1
the at least one welding device detects an electrical measurement variable in a welding current circuit to control the welding process
Implementation Method 2
an arc is ignited in a known manner with each welding device between the electrode of the welding torch and the workpiece. On the one hand, the arc partially melts the workpiece
Implementation Method 3
an arc is ignited in a known manner with each welding device between the electrode of the welding torch and the workpiece
Implementation Method 4
Welding processes with multiple devices can experience unstable control due to electromagnetic interference from overlapping welding current circuits
Data Source
AI summary
A stable welding process for a welding method in which at least one welding device is used for welding. During the welding process carried out using the welding device, synchronization information is transmitted to the at least one welding device from at least one other electric device, in which a device current that changes over time flows in a device current circuit at least at one point in time, and the at least one welding device is designed to use the obtained synchronization information in order to ignore measurement values detected at the point in time for the measurement variable.