Eccentric Mass Phase Control for Low-Noise Stress Relief
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Solution Overview
Problem
Existing eccentric mass vibrating systems face challenges in efficiently delivering variable energy frequencies and masses, leading to suboptimal stress relief, noise pollution, and motor overheating, particularly in applications with varying material characteristics and flow conditions, requiring complex manual adjustments and long setup times.
Innovation Solution
An automatically controlled eccentric mass vibrating system with adjustable phase shift between two electric motors and eccentric masses, allowing for precise energy adaptation to specific component needs, reducing manual intervention, and optimizing energy consumption and noise levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the unbalance of the vibrator is increased to deliver maximum energy for resonance, then the energy delivery capability is improved, but the noise level increases beyond safety limits
Solution Approach 1:
The patent applies dynamics by making the unbalance of the vibrator adjustable rather than fixed. The controller can vary the unbalance parameter in real-time to match the specific energy requirements of different resonance frequencies being treated, allowing operation at lower unbalance levels for non-critical frequencies (reducing noise) while maintaining high unbalance for critical resonances (maximizing energy delivery).
Solution Approach 2:
The patent changes the unbalance parameter of the vibrator dynamically based on the treatment requirements. By adjusting the unbalance parameter, the system can optimize energy delivery for each specific resonance frequency while keeping noise levels within acceptable limits for most of the treatment spectrum.
2Object-generated harmful factors
If the vibration energy contribution is reduced to lower noise levels, then the noise pollution is decreased, but the effectiveness of the stress relief treatment is reduced
Solution Approach 1:
The patent changes the unbalance parameter dynamically to match the specific energy absorption characteristics of the component at different resonance frequencies. This allows the system to maintain treatment effectiveness by delivering appropriate energy levels for each frequency while keeping overall noise pollution low by not consistently operating at maximum unbalance.
Solution Approach 2:
The system performs self-adjustment by automatically analyzing the resonance frequencies of the component and selecting the appropriate unbalance parameter for each frequency, eliminating the need for manual intervention and ensuring optimal treatment effectiveness at minimal noise levels.
3Adaptability or versatility
If manual adjustment of eccentric mass is performed to adapt to different energy requirements, then the adaptability to specific cases is improved, but the system complexity and setup time increase
Solution Approach 1:
The patent replaces the manual mechanical adjustment of eccentric mass with an automated control system. The controller automatically adjusts the unbalance parameter based on analysis of the component's resonance characteristics, eliminating the need for manual mechanical intervention while maintaining full adaptability to different energy requirements.
Solution Approach 2:
The system performs self-adjustment by automatically analyzing resonance frequencies and selecting the appropriate unbalance parameter, making the adaptation process autonomous and eliminating complex manual setup procedures.
4Ease of operation
If all detected frequencies are treated with the same phase shift angle, then the ease of operation is improved, but the energy delivery optimization is worsened
Solution Approach 1:
The patent changes the unbalance parameter dynamically for each resonance frequency based on the component's specific energy absorption characteristics at that frequency. This automated parameter optimization delivers maximum effective energy for stress relief while the system maintains operational simplicity through automatic control.
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 system enables efficient stress relief with reduced noise pollution and lower energy consumption, minimizing structural failure risks and setup times, by automatically adjusting the phase shift and energy delivery to match the maximum energy absorption of each component, enhancing treatment effectiveness and reducing the number of treatments needed.
Implementation Method 1
The vibrator comprises a first electric motor (21) and a second electric motor (22)... On each shaft (24, 25), a respective bar (28, 29) is positioned to form the eccentric mass
Implementation Method 2
the stressed part is made to vibrate at different frequencies by means of a vibrator fixed to the part
Implementation Method 3
The frequencies at which these increasing variations are noted are called resonance peaks. The part is therefore made to vibrate at different frequencies chosen from among those identified
Data Source
Figure 1~2
Figure 3~5
AI summary
An eccentric mass vibrating system comprising: a first motor having a first shaft; a first eccentric mass connected to said first shaft; a second motor having a second shaft; a second eccentric mass connected to said second shaft; said first motor and said second motor are adapted to be associated with an object to be vibrated; said first motor and said second motor being electrically adjustable so as to arrange said first eccentric mass and said second eccentric mass at a predefined angle therebetween; said first motor and said second motor being adapted to be positioned on an object to be vibrated; characterised in that it comprises: at least one sensor associated with said object to be vibrated, and a control computer of said system adapted to modify said predefined angle if the value measured by said sensor exceeds a predefined value.