Material Transfer Control via Decision Thresholds
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Solution Overview
Problem
Current methods for the concurrent transfer of multiple materials to a common destination in manufacturing processes are inefficient and prone to errors, leading to increased variability and waste due to lack of precise control.
Innovation Solution
The method employs industrial automation equipment, such as programmable logic controllers and sensors like load cells and flow meters, to control the transfer of materials to a common vessel, using a decision threshold and predictive spill models to ensure accurate and efficient transfer by managing the feed times and flow rates of primary and secondary materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If concurrent transfer of multiple materials is implemented to save time, then productivity is improved, but manufacturing precision deteriorates due to increased variability and errors
Solution Approach 1:
The control system continuously monitors the actual transfer quantities of multiple materials and compares them against target values. When materials approach their respective transfer thresholds or when the primary material nears its target quantity, the system automatically adjusts feed rates and timing to maintain precision despite concurrent operation.
Solution Approach 2:
The system dynamically adjusts the feed rates of different materials based on real-time conditions. The primary material feed is modulated according to a decision threshold model that predicts when secondary materials should be introduced, allowing the system to optimize both speed and accuracy during the concurrent transfer process.
2Manufacturing precision
If automated control systems are implemented to improve precision, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The control system autonomously manages the concurrent transfer of multiple materials without requiring complex external intervention. It self-regulates feed rates, timing sequences, and threshold decisions based on pre-programmed logic and real-time sensor feedback, reducing the need for additional complex control hardware while maintaining high precision.
3Manufacturing precision
If sequential transfer of materials is used to maintain precision, then manufacturing precision is improved, but productivity deteriorates due to increased transfer time
Solution Approach 1:
The system pre-calculates decision thresholds and feed timing sequences before the transfer process begins. By predicting when each material should be introduced and at what rate based on target quantities and material properties, the system can concurrently transfer multiple materials with the same precision as sequential transfer would provide, eliminating the time penalty while maintaining accuracy.
Data Source
AI summary
A method for controlling an amount of material transferred in a system having a plurality of material feeds and concurrent material transfer periods. The method comprising steps of: supplying each of a primary material having a target weight and a secondary material, to a receiving vessel; determining a decision threshold; feeding the primary material to the receiving vessel, feeding the secondary material into the receiving vessel as or after the primary material begins feeding and before the decision threshold, determining a feed status of the primary and secondary materials at the decision threshold; changing the feed status of one of the primary or secondary materials at the decision threshold; and feeding only the primary material within a feed alone time period until the target weight amount is fed.