Electrospinning Apparatus Cone Shape Feedback Control
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Solution Overview
Problem
Existing electrospinning methods face challenges in reproducibly forming consistent fibre structures due to changes in spinning material composition during the process, affecting fibre morphology and diameter, which are difficult to control in real-time.
Innovation Solution
An electrospinning apparatus equipped with an imaging device and processing unit that captures images of the spinning cone to determine its shape, calibrate, and adjust operating parameters such as voltage, material flow, and gas flow to maintain desired fibre diameter, using edge detection and real-time feedback to compensate for material changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If real-time monitoring and adjustment of spinning parameters is implemented, then fibre diameter consistency and reproducibility are improved, but device complexity and measurement requirements increase
Solution Approach 1:
The patent implements a feedback control system where an imaging device captures images of the Taylor cone, the processing unit analyzes the cone shape to determine spinning parameters, and the system adjusts operating conditions in real-time based on this analysis. This closed-loop feedback mechanism maintains fibre diameter consistency by continuously monitoring and correcting deviations from target parameters.
Solution Approach 2:
The patent replaces direct mechanical measurement of fibre diameter with optical imaging and image processing. Instead of physically measuring the fibres after production, the system uses an imaging device to capture Taylor cone morphology and processes these images computationally to infer spinning parameters, substituting mechanical measurement with optical and computational methods.
2Manufacturing precision
If Taylor cone shape analysis is used to control spinning parameters, then fibre morphology control is improved, but measurement and detection difficulty increases
Solution Approach 1:
The patent introduces the Taylor cone shape as an intermediary parameter that mediates between operating conditions and final fibre morphology. Instead of directly measuring and controlling fibre diameter, the system measures Taylor cone characteristics (which are easier to capture optically) and uses these as proxy indicators to infer and control the actual spinning parameters that determine fibre morphology.
Solution Approach 2:
The patent creates a digital copy of the Taylor cone through imaging and uses this digital representation for analysis and control. The imaging device captures a visual copy of the cone, the processing unit creates a digital model from this image, and control decisions are made based on this digital copy rather than direct physical measurement, simplifying the detection process.
3Reliability
If continuous monitoring and dynamic adjustment of spinning parameters is implemented, then fibre structure reproducibility is improved, but process time and productivity may be affected
Solution Approach 1:
The patent implements continuous monitoring and adjustment during the spinning process rather than intermittent or post-process control. The imaging device continuously captures Taylor cone images, the processing unit continuously analyzes these images to determine spinning parameters, and adjustments are made continuously to maintain optimal conditions, ensuring consistent fibre structure throughout production.
Solution Approach 2:
The patent performs preliminary analysis of the Taylor cone shape to predict spinning parameters before actual fibre formation occurs. By analyzing the cone morphology in real-time and adjusting parameters proactively, the system prevents deviations in fibre structure rather than correcting them after they occur, maintaining both quality and efficiency.
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
This approach enhances fibre reproducibility and quality control, ensuring consistent fibre morphology and reducing material waste by dynamically adjusting process parameters based on real-time measurements of the spinning cone shape.
Implementation Method 1
a voltage supply unit for applying a voltage difference between the nozzle unit and collector unit
Implementation Method 2
electrospinning method and apparatus... by ejecting spinning material from a nozzle outlet of an electrospinning apparatus
Data Source
Figure 1~2
Figure 3A~3E
AI summary
Electrospinning apparatus and method for electrospinning of material by ejecting spinning material from a nozzle outlet (3a). The electrospinning apparatus includes a spinning material supply unit (6), a nozzle unit (3)with a nozzle outlet (3a),a collector unit (1) for collecting a fibre (8) formed during operation of the electrospinning apparatus and a voltage supply unit (2) for applying a voltage difference between the nozzle unit (3) and collector unit (1). An imaging device (4) is present for capturing an image of a conus (7) and the fibre (8) being formed during operation, as well as a processing unit (5) connected to the imaging device (4), spinning material supply unit (6) and voltage supply unit (2). The processing unit (5) is arranged to determine a shape of the conus (7), and control operation of the electrospinning apparatus based on the determined shape of the conus (7).