Higher-Order Welding Line Model for Accurate Arc Voltage Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional R/L line models used in welding processes fail to accurately reconstruct the arc voltage due to their inability to account for magnetic coupling with conductive components in the vicinity of the welding line, leading to imprecise estimation and potential adverse effects on welding quality.
Innovation Solution
A welding line model with an order greater than one is employed to model the welding line as a transfer system, allowing for the consideration of magnetic coupling with conductive components. This model determines the line voltage drop and subsequently estimates the arc voltage with improved precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional R/L line model (order one) is used to model the welding line, then the model complexity is low and easy to implement, but the arc voltage estimation accuracy deteriorates due to inability to account for magnetic coupling with conductive components
Solution Approach 1:
The patent changes the order parameter of the welding line model from one (conventional R/L model) to greater than one (higher-order model). This parameter change enables the model to account for magnetic coupling effects with conductive components in the vicinity of the welding line, thereby improving arc voltage estimation accuracy while accepting increased model complexity.
2Measurement precision
If a higher-order welding line model is used to account for magnetic coupling with conductive components, then the arc voltage estimation accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by increasing the model order from one to greater than one, which enables the welding line model to capture magnetic coupling effects. This parameter change directly addresses the technical contradiction by improving measurement precision at the cost of increased device complexity.
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
The use of a higher-order welding line model significantly enhances the accuracy of arc voltage estimation, leading to improved welding quality and more precise determination of welding process characteristics such as heat input and arc energy.
Implementation Method 1
the welding line is often routed in the vicinity of electrically conductive parts/components/structures... Due to the highly dynamic welding currents (temporally changing electrical currents with steep edges and high frequencies) flowing through the welding line, an electromagnetic interaction with such components can occur.
Data Source
AI summary
In order to improve the estimation of the arc voltage for use in a welding process, a welding line is modeled using a welding line model in the form of a transfer system with an order greater than one for estimating the arc voltage, and the estimated value of the arc voltage is determined as the difference between the measurement voltage at the measurement point and the determined line voltage drop.