Electrode Edge Control Using Synchronized Line and Final EPC
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Solution Overview
Problem
Conventional electrode meandering correction apparatuses fail to effectively correct meandering defects during the transfer of electrodes to a winding core due to mismatched edge position control values between the line EPC unit and the final EPC unit, leading to increased meandering defects and excessive motor load.
Innovation Solution
A feedback-controlled apparatus that synchronizes the edge position of the electrode using data from the determination EPS edge position sensor, adjusting the line EPC unit to match the determination EPS edge reference value, thereby stabilizing the electrode input and reducing meandering defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the line EPC unit and final EPC unit operate independently with separate edge position control, then each unit can adjust edge position locally, but meandering defects increase due to mismatched control values between units
Solution Approach 1:
The patent merges the control of the line EPC unit and final EPC unit into a unified feedback control system. The determination EPS edge position sensor provides feedback that is used to adjust both EPC units' control values, ensuring they operate with matched parameters rather than independently, thereby resolving the contradiction between operational independence and edge position consistency.
Solution Approach 2:
The patent implements feedback control using the determination EPS edge position sensor to continuously monitor the electrode edge position and adjust the EPC units' control values accordingly. This feedback mechanism ensures that both EPC units operate with synchronized control parameters, eliminating the meandering defects caused by mismatched independent control while maintaining the ability to adjust edge position.
2Manufacturing precision
If the final EPC unit compensates for all meandering without feedback control on the line EPC unit, then edge position can be corrected at the final stage, but the final EPC motor experiences excessive load
Solution Approach 1:
The patent applies preliminary action by implementing feedback control on the line EPC unit to correct meandering early in the transfer process. By adjusting the line EPC unit's control values based on determination EPS feedback, the system corrects edge position deviations before they reach the final EPC unit, thereby reducing the corrective workload and motor load on the final EPC unit while maintaining precise edge position control.
3Measurement precision
If feedback control is implemented using determination EPS edge position values, then edge position accuracy improves, but system complexity increases due to additional control coordination
Solution Approach 1:
The patent applies universality by using the determination EPS edge position sensor for multiple purposes: it not only measures the final edge position for quality control but also provides feedback for adjusting both the line EPC unit and final EPC unit control values. This multi-functional use of the sensor simplifies the overall control architecture by eliminating the need for separate measurement and control systems, thereby reducing system complexity while maintaining high measurement precision.
Data Source
AI summary
An apparatus and method for correcting meandering of an electrode are provided. An edge position of the electrode is feedback-controlled so that a determination edge position sensor (EPS) edge position value matches a determination EPS edge reference value, and a line edge position control (EPC) unit is feedback-controlled so that a direction in which the electrode is transferred from a line EPC roller is corrected by comparing pieces of data on the determination EPS edge position values when the determination EPS edge position values change over time to converge to the determination EPS edge reference value by the feedback control, and the determination EPS edge reference value.