Coating Dispensing Feedback Control for Uniform High-Speed Application
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Solution Overview
Problem
Current dispensing systems struggle to maintain precision and accuracy in applying conformal coatings or other fluids to substrates with intricate components, often resulting in coating characteristics exceeding tolerance ranges.
Innovation Solution
A dispensing system with a controller and sensor that adjusts operating parameters based on real-time measurements of coating characteristics, using predictive analytics to ensure subsequent applications stay within tolerance ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated coating dispensing is used, then productivity is improved, but coating uniformity and precision deteriorate due to lack of human skill
Solution Approach 1:
The system continuously monitors coating application parameters using sensors and feedback control algorithms. The coating dispensing system adjusts dispensing parameters in real-time based on feedback from sensors that measure coating thickness, substrate position, and dispensing rate, ensuring uniform coating quality while maintaining automated high-speed operation.
Solution Approach 2:
The patent replaces manual mechanical control with automated computer-controlled dispensing systems. The mechanical skill of human operators is substituted with programmable control systems, sensors, and automated feedback loops that precisely control coating application parameters, enabling both high productivity and consistent precision.
2Productivity
If coating formulation is optimized for speed, then productivity is improved, but coating quality and uniformity worsen
Solution Approach 1:
The system dynamically adjusts coating formulation parameters and dispensing conditions based on real-time process requirements. Rather than using a fixed formulation optimized for either speed or quality, the system can modify viscosity, flow rate, and other parameters dynamically during operation to achieve both high productivity and excellent coating quality simultaneously.
Solution Approach 2:
The patent employs parameter changes in the coating formulation and dispensing process to resolve the contradiction. By adjusting formulation viscosity, solvent content, and dispensing parameters such as pressure and flow rate, the system optimizes coating application for both speed and quality according to specific application requirements.
3Manufacturing precision
If manual coating dispensing is used, then coating precision is improved, but productivity deteriorates
Solution Approach 1:
The automated dispensing system incorporates self-adjusting capabilities through embedded sensors and control algorithms. The system monitors its own performance and automatically corrects deviations in coating application, eliminating the need for continuous manual intervention while maintaining precision comparable to skilled operators at much higher speeds.
Solution Approach 2:
The patent replaces the mechanical skill and manual control of human operators with automated computer-controlled systems. This substitution enables precision coating application at automated speeds by using programmable control, sensors, and feedback mechanisms to replicate and enhance human capability.
4Productivity
If high-speed coating dispensing is used, then productivity is improved, but coating defect rate increases
Solution Approach 1:
The system uses real-time feedback from sensors to monitor coating application quality at high speeds. When defects are detected or parameters deviate from specifications, the feedback control system immediately adjusts dispensing parameters to correct the issue, maintaining high productivity while minimizing defect rates through continuous quality monitoring and correction.
Solution Approach 2:
The patent implements preventive measures through prior cushioning by using predictive algorithms and real-time monitoring to detect potential defects before they occur. The system adjusts parameters in advance to prevent defect formation, rather than merely detecting and correcting defects after they occur, thereby maintaining high speed operation with low defect rates.
Data Source
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AI summary
Systems and methods for enhanced coating dispensing controls are disclosed. A dispensing system is configured to apply material to a sequence of substrates. The dispensing system applies a first amount of material to a first substrate according to a first value of an operating parameter. A sensor is used to measure a characteristic of the first amount of material applied on the first substrate. Based on the characteristic of the first amount of material applied on the first substrate, a characteristic of an amount of material, after being applied on a subsequent substrate in the sequence of substrates, is estimated to be outside of a range. The value of the operating parameter is adjusted in response and a second amount of material is applied to a second substrate.