Oscillation Blade Frequency Tracking for Fouling Compensation
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Solution Overview
Problem
Oscillation blade devices, such as cantilever fans and micro-aerial vehicles, often operate suboptimally due to changes in resonant frequency caused by fouling, environmental conditions, and material degradation, leading to reduced airflow and potential overheating of components, as they are typically not dynamically tuned to their actual resonant frequency.
Innovation Solution
An apparatus comprising a power source, current detector, and processor that applies alternating electric excitation signals to an oscillation blade device, measures current amplitudes, assesses peak values for variations indicative of beating phenomena, and adjusts the excitation frequency to match the blade's actual resonant frequency, ensuring optimal operation without the need for manual re-tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual tuning methods are used to adjust the oscillation blade device to resonant frequency, then the device can operate at optimal frequency, but the tuning process is cumbersome and requires device shutdown
Solution Approach 1:
The system performs self-tuning by automatically detecting the actual resonant frequency through current amplitude analysis and adjusting the excitation frequency accordingly, eliminating the need for manual intervention and device shutdown
Solution Approach 2:
The system continuously monitors the current amplitude supplied to the oscillation blade device and uses this feedback to detect variations indicating frequency deviation, then automatically adjusts the excitation frequency to maintain optimal operation
2Productivity
If the oscillation blade device operates at nominal resonant frequency, then maximum airflow efficiency is achieved, but environmental changes and fouling cause frequency deviation reducing efficiency
Solution Approach 1:
The system dynamically adjusts the excitation frequency in real-time based on environmental conditions and device state changes, transitioning from static nominal frequency operation to adaptive frequency tracking that maintains optimal performance
Solution Approach 2:
The system uses feedback from current amplitude measurements to detect frequency deviations caused by environmental changes or fouling, and automatically corrects these deviations to maintain maximum airflow efficiency
3Productivity
If frequent manual tuning is performed to maintain optimal frequency, then airflow efficiency is maintained, but operational time is lost due to device shutdown
Solution Approach 1:
The system ensures continuous optimal operation by automatically maintaining resonant frequency without interruption, eliminating the periodic shutdowns required for manual tuning and maximizing operational time
Solution Approach 2:
The system performs automatic frequency maintenance without requiring operational shutdown, continuously adjusting the excitation frequency to match the actual resonant frequency and maintaining uninterrupted optimal performance
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 solution dynamically maintains the oscillation blade device at its actual resonant frequency, enhancing airflow efficiency and reducing the risk of component overheating, while minimizing operational costs and maintenance efforts.
Implementation Method 1
an oscillation blade device having a driver electrically coupled to the power source and configured to generate a driving force in response to receiving an alternating electric excitation signal from the power source
Implementation Method 2
the oscillation of the blade, or cantilever, causes the surrounding air to move, thereby generating airflow which is used for cooling the component
Implementation Method 3
it may use an electromagnetic element to oscillate a planar body
Data Source
AI summary
A power source is configured to apply a first alternating electric excitation signal to an oscillation blade device at a first excitation frequency causing a blade of the oscillation blade device to oscillate at a first oscillation frequency. A current detector is configured to measure amplitude values of the current supplied by the power source to the oscillation blade device. A processor is configured to assess a plurality of successive peak values of the measured amplitudes, determine a second oscillation frequency for the blade if variation in the successive peak values is detected and send a command to the power source to apply a second alternating electric excitation signal to the oscillation blade device at a second excitation frequency which matches the determined second oscillation frequency.