Weld Schedule Optimization Module for Current Conflict Resolution
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Solution Overview
Problem
Robotic welding systems face challenges with power factor reduction and excessive current draw during simultaneous welding operations, leading to inefficiencies and high costs due to the need for expensive capacitor banks and significant space requirements.
Innovation Solution
A system comprising a weld schedule optimization module and a weld control module that analyzes and modifies welding schedules to ensure that the total electrical current required by multiple welding apparatuses does not exceed a maximum threshold, rescheduling weld events to later times if necessary, thereby optimizing the weld schedule and preventing conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple welding apparatuses perform welding operations simultaneously, then productivity increases, but the total current draw may exceed the maximum current threshold
Solution Approach 1:
The weld schedule optimization module dynamically adjusts the welding schedule by analyzing current draw requirements and modifying the timing of weld events. When the total current draw exceeds the maximum threshold, the system automatically reschedules weld events to occur at different times, creating a dynamic balance between productivity and power constraints without requiring manual intervention or hardware changes.
2Power
If capacitor banks are added to supply additional current, then the current threshold can be exceeded, but the cost and floor space requirements increase significantly
Solution Approach 1:
The invention extracts the power factor correction function from physical capacitor banks and implements it through software-based scheduling. Instead of adding hardware to increase current supply capacity, the system removes the need for capacitor banks by intelligently distributing weld events across different time periods, thereby eliminating the associated cost and floor space requirements while maintaining the ability to handle high current demands.
3Reliability
If capacitor banks are installed for power factor correction, then welding operations can proceed, but expensive equipment and maintenance requirements are introduced
Solution Approach 1:
The invention replaces expensive, maintenance-intensive capacitor banks with a software-based scheduling system that has negligible cost and maintenance requirements. The weld schedule optimization module provides power factor correction functionality through computational algorithms rather than physical equipment, eliminating the need for costly hardware installation and ongoing maintenance while maintaining system reliability.
Data Source
AI summary
A method and system for optimizing a weld schedule is disclosed. The weld schedule is used to control a plurality of welding apparatuses, and includes a plurality of weld sequences for control the plurality of welding apparatuses. The weld sequences each define one or more weld events. Each of the weld events defines a weld operation and a duration of the weld operation. The weld schedule is analyzed to determine if any time points in the weld schedule have two or more weld events scheduled where the aggregate current demand exceeds a maximum current threshold. If such a conflict in the weld schedule is identified, the weld schedule is modified by rescheduling a lower priority weld event. The method executes iteratively until all conflicts in the welding schedule are resolved.