Weld Pool Feedback Control for Real-Time Welding Precision
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Solution Overview
Problem
Current welding technologies lack the ability to precisely control welding processes in real-time for human operators, leading to inconsistencies and reduced accuracy compared to robotic systems, especially for unskilled or novice welders.
Innovation Solution
A welding system that includes power conversion circuitry and control circuitry to monitor and adjust welding parameters such as wire-feeding speed and output current based on real-time measurements of the weld pool, using sensors like cameras or infrared sensors to maintain a target weld pool width, providing feedback to operators for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If real-time weld pool monitoring and control is implemented, then weld quality and consistency are improved, but device complexity increases
Solution Approach 1:
The system employs sensors to capture real-time weld pool attributes and feeds this information back to the control circuitry, which automatically adjusts welding parameters. This closed-loop feedback mechanism ensures consistent weld quality by continuously monitoring and correcting deviations from target parameters, directly resolving the contradiction between improved manufacturing precision and increased device complexity.
Solution Approach 2:
The patent replaces manual operator control with automated electronic control systems. Sensors, control circuitry, and actuators form an electronic control loop that substitutes the mechanical/manual adjustment process, achieving precise weld quality control while managing complexity through integration of these components into a cohesive automated system.
2Ease of operation
If automated real-time control is implemented, then ease of operation is improved for unskilled operators, but device complexity increases
Solution Approach 1:
The welding system performs self-adjustment by automatically monitoring weld pool attributes and correcting parameters without operator intervention. The control circuitry independently processes sensor data and modifies welding parameters to maintain optimal conditions, enabling unskilled operators to achieve professional results while the system manages its own complexity through autonomous operation.
Solution Approach 2:
The real-time feedback loop provides automatic guidance and correction, eliminating the need for operator expertise in judging weld quality. The system self-regulates by comparing actual weld pool attributes against target values and automatically adjusting parameters, making operation accessible to unskilled users while encapsulating complexity within the automated control system.
3Manufacturing precision
If multiple welding parameters are controlled in real-time, then manufacturing precision is improved, but loss of time in processing increases
Solution Approach 1:
The system maintains continuous monitoring and control of welding parameters throughout the entire welding process. Sensors continuously capture weld pool attributes, and the control circuitry continuously adjusts parameters in real-time, ensuring uninterrupted precise control without stopping or pausing the welding operation, thus achieving high manufacturing precision without significant time loss.
Solution Approach 2:
The system pre-establishes target parameter ranges and control algorithms before welding begins. By having the control strategy prepared in advance and the system configured for real-time adjustment, the welding process can proceed continuously with immediate parameter corrections, avoiding time-consuming post-weld adjustments or rework while maintaining precision.
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 system enhances weld quality and consistency by automatically adjusting parameters during the welding process, making it easier for unskilled operators to achieve professional-grade results.
Implementation Method 1
using sensors like cameras or infrared sensors to maintain a target weld pool width
Data Source
AI summary
Disclosed are systems and methods for controlling welding processes in real-time, or near real-time, as a function of a measured weld pool attribute. The welding-type system includes power conversion circuitry and control circuitry. The power conversion circuitry converts input power to welding-type power for use by a welding torch to form a weld pool. The control circuitry control one or more parameters of the welding-type system during a welding operation based on one or more attributes of the weld pool determined using a sensor configured to capture the one or more attributes of the weld pool. The one or more attributes may include, for example, a width of the weld pool and/or a depth of depression in weld pool.