Filament Winding Tension Control for Liner Swing Compensation
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Solution Overview
Problem
Conventional filament winding technologies experience tension deviations in fiber winding due to circumferential swinging of the liner, leading to uneven fiber tension and reduced strength in the final tank structure.
Innovation Solution
A filament winding apparatus with a controller that estimates tension amplitude based on liner swing, generates a temporary tension waveform, and adjusts fiber tension using a dancer to counteract the swing, ensuring consistent tension across the winding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the liner is rotated to wind the fiber around the liner, then the fiber winding process is enabled, but the liner circumferentially swings causing tension deviation
Solution Approach 1:
The control unit applies preliminary counteracting action by generating a tension adjustment command that opposes the predicted tension fluctuation caused by liner swing. The system estimates the swing amount, predicts the resulting tension deviation, and applies compensatory tension adjustment in advance or in real-time to cancel out the harmful effect, thereby maintaining uniform fiber tension during the winding process
Solution Approach 2:
The system implements feedback control by measuring the actual liner swing amount during rotation, using this measurement to estimate tension fluctuation, and adjusting the fiber tension accordingly. The control unit continuously monitors the swing, calculates the required compensation, and modifies the tension to maintain consistency, creating a closed-loop control system that actively counteracts swing-induced variations
2Quantity of substance
If the liner has a longer overall length, then the tank capacity increases, but the circumferential swing occurs more markedly
Solution Approach 1:
The control unit applies a counteracting force through tension adjustment to compensate for the gravitational and centrifugal effects that cause swing in long liners. By dynamically adjusting the fiber tension based on measured swing amount, the system creates a counterbalancing effect that stabilizes the liner rotation, allowing long liners to be wound without excessive swing
3Device complexity
If the center of gravity of the liner does not coincide with the axis of rotation, then the liner can be supported simply, but centrifugal force enhances the circumferential swing
Solution Approach 1:
The system measures the actual swing caused by eccentric center of gravity during rotation and uses this feedback to dynamically adjust fiber tension. The control unit continuously monitors swing magnitude and applies compensatory tension to counteract the centrifugal force effects, maintaining stable winding conditions despite the simplified support structure that allows eccentric rotation
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
The apparatus effectively cancels tension amplitude fluctuations, maintaining set tension and enhancing the uniformity and strength of the fiber-wound tank.
Implementation Method 1
a tension adjuster that adjusts the tension of the fiber supplied to the liner
Implementation Method 2
The circumferential swing is further enhanced due to the centrifugal force produced by the rotation in a case where the center of gravity of the liner does not coincide with the axis of rotation of the rotating liner
Implementation Method 3
the tension controller controls the tension adjuster in such a way that an adjusted tension waveform that relates the rotation phase of the liner to the tension of the fiber adjusted by the tension adjuster has a phase opposite to the phase of the temporary tension waveform
Data Source
AI summary
A filament winding apparatus includes a controller that controls the action of the filament winding apparatus. The controller includes a tension controller that controls a tension adjuster in such a way that an adjusted tension waveform that relates the rotation phase of a liner to the tension of a fiber adjusted by the tension adjuster has a phase opposite to the phase of a temporary tension waveform.