Tunable Vehicle Vibration Dampener With Adjustable Frequency Control
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Solution Overview
Problem
Existing vibration dampeners are designed to operate at fixed frequencies, requiring multiple dampeners for various vibration frequencies in vehicles, leading to a time-consuming and costly design and mounting process.
Innovation Solution
A tunable vibration dampener with adjustable support systems, including cables and motors, allows for selective tuning and frequency adjustment to counteract changing vibration frequencies, using sensors and controllers for real-time attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fixed-frequency vibration dampeners are used to counteract different vibration frequencies, then vibration damping effectiveness is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies universality by designing a single vibration dampener that can function at multiple frequencies through adjustable support systems. The support member or support element can be adjusted to change the natural frequency of the mass, allowing one dampener to replace multiple fixed-frequency dampeners and effectively address various vibration frequencies with a single multi-functional device.
Solution Approach 2:
The patent applies dynamics by making the support systems adjustable rather than fixed. The support member or support element can be modified to change the stiffness or length, thereby dynamically adjusting the natural frequency of the mass to match different vibration frequencies that need to be dampened, enabling adaptive vibration control.
2Reliability
If multiple fixed-frequency vibration dampeners are designed and tested for different frequencies, then comprehensive vibration coverage is improved, but design time and development cost increase
Solution Approach 1:
The patent applies universality by creating a single dampener design that can be adjusted to cover multiple vibration frequencies. This eliminates the need to design, test, and validate separate dampeners for each frequency, as one universal dampener can be tuned to address various frequencies, significantly reducing development time and resources.
Solution Approach 2:
The patent applies parameter changes by allowing adjustment of the support member or support element to change the natural frequency parameter of the mass. This enables a single design to cover multiple frequency ranges by simply modifying physical parameters rather than creating multiple specialized designs, reducing the overall design and testing burden.
3Reliability
If fixed-frequency dampeners are installed for various vibration sources, then vibration attenuation is improved, but installation complexity and mounting cost increase
Solution Approach 1:
The patent applies universality by providing a single adjustable dampener that can be mounted in one location and then tuned to address multiple vibration sources and frequencies. This reduces installation complexity compared to mounting multiple fixed-frequency dampers at different locations, as the universal dampener can be adjusted to target different vibration sources after a single installation.
4Adaptability or versatility
If vibration frequencies change over time, then adaptability is improved, but fixed-frequency dampener performance deteriorates
Solution Approach 1:
The patent applies dynamics by making the support systems adjustable to change the natural frequency of the mass. This allows the dampener to adapt to changing vibration frequencies by modifying the support member or support element, maintaining effective damping performance across varying operational conditions rather than being locked to a single fixed frequency.
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
Enables efficient and adaptable vibration damping across multiple frequencies without the need for multiple dampeners, reducing design time and costs while improving passenger comfort.
Implementation Method 1
A mass is suspended between the first support wall and the second support wall. The mass has a first side surface and a second side surface. A first support system having a support member connects the first side surface and the first support wall and a second support system having a support element connects the second side surface and the second support wall. At least one of the support member and the support element is adjustable to establish a selected attenuation frequency for the tunable vibration dampener.
Implementation Method 2
The support member includes a first cable and a second cable, and the support element includes a third cable and a fourth cable. A first tuning element is connected to the first cable and a second tuning element is connected to the second cable, the first tuning element and the second tuning element being operable to adjust a tension in corresponding ones of the first cable and the second cable.
Implementation Method 3
The support member includes a first spring and the support element includes a second spring. A first tuning element connected to the first spring and a second tuning element connected to the second spring.
Data Source
AI summary
A tunable vibration dampener includes a support including a first support wall and a second support wall spaced from the first support wall and a mass suspended between the first support wall and the second support wall. The mass has a first side surface and a second side surface. A first support system having a support member connects the first side surface and the first support wall and a second support system having a support element connects the second side surface and the second support wall. At least one of the support member and the support element is adjustable to establish a selected attenuation frequency for the tunable vibration dampener.