Eccentric Mass Vibration Control With Adaptive Phase Shift
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Solution Overview
Problem
Existing eccentric mass vibrating systems face challenges in delivering optimal energy levels and resonance frequencies due to manual adjustments, leading to inefficiencies and potential structural damage or noise pollution.
Innovation Solution
An eccentric mass vibrating system with two electrically adjustable motors and eccentric masses, equipped with sensors and a control computer, allows for automatic adjustment of the phase shift angle between the masses to optimize energy delivery and resonance frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual mechanical adjustment of eccentric mass is used to vary unbalance, then the vibrator can be adapted to specific energy requirements, but the system complexity and setup time increase significantly
Solution Approach 1:
The patent replaces manual mechanical adjustment of eccentric mass with an electronic control system. Two electric motors drive eccentric masses with controllable phase shift, allowing energy delivery adaptation through electrical parameters rather than mechanical reconfiguration. This substitution eliminates complex manual setup while maintaining adaptability to different energy requirements.
Solution Approach 2:
The patent changes the control parameter from physical eccentric mass position to electrical phase shift angle between two motors. By varying the phase shift parameter electronically, the system adapts energy delivery to match specific application requirements without mechanical intervention, reducing setup complexity while preserving versatility.
2Ease of operation
If all detected frequencies are treated with the same phase shift angle, then the system is simple to operate, but energy delivery is suboptimal for most frequencies
Solution Approach 1:
The patent introduces dynamic adaptation of the phase shift parameter based on detected frequency characteristics. Rather than using a fixed phase shift for all frequencies, the system automatically adjusts the phase shift angle to optimize energy delivery for each specific frequency, maintaining ease of operation while significantly improving treatment effectiveness.
Solution Approach 2:
The patent implements a feedback mechanism where the system analyzes detected frequencies and their absorption characteristics, then automatically adjusts the phase shift parameter accordingly. This closed-loop control optimizes energy delivery for each frequency without requiring manual intervention, balancing operational simplicity with treatment productivity.
3Measurement precision
If vibration energy is increased to ensure detection of all component frequencies, then frequency detection improves, but noise pollution and motor overheating increase
Solution Approach 1:
The patent uses phase shift angle as a control parameter to optimize the distribution of vibration energy across different frequencies. By adjusting the phase shift, the system can achieve adequate frequency detection with lower overall energy levels, reducing noise pollution and motor thermal load while maintaining detection accuracy.
Solution Approach 2:
The patent employs periodic scanning through different phase shift angles and rotation frequencies to detect all component frequencies. This periodic variation allows comprehensive frequency detection without requiring continuously high energy levels, as each frequency is stimulated during its turn in the scanning cycle, reducing overall noise and thermal stress.
4Speed
If rotation frequency of the rotor is varied to match different treatment frequencies, then resonance treatment is optimized, but the energy delivery may become insufficient or excessive
Solution Approach 1:
The patent segments the energy delivery function into two independent controllable parameters: rotation frequency and phase shift angle. This segmentation allows separate optimization of each parameter - rotation frequency matches the treatment frequency for resonance, while phase shift angle controls the energy contribution level, preventing under- or over-delivery of power.
Solution Approach 2:
The patent dynamically adjusts both rotation frequency and phase shift angle based on the specific treatment requirements. The rotation frequency adapts to match resonance frequencies, while the phase shift dynamically controls energy delivery magnitude, ensuring optimal power transfer without excessive or insufficient energy input.
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 system enhances energy efficiency, reduces manual intervention risks, minimizes noise pollution, and optimizes stress-relief treatments by automatically adapting to specific working needs of each component.
Implementation Method 1
the stressed part is made to vibrate at different frequencies by means of a vibrator fixed to the part
Implementation Method 2
The frequencies at which these increasing variations are noted are called resonance peaks
Implementation Method 3
the acceleration pattern of the part is analysed as the frequencies induced by the vibrator vary
Data Source
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.