Active Vibration Damping with Standardized Piezoelectric Layout
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Solution Overview
Problem
Existing active damping devices are difficult to design and costly to produce, as they require specialized design for each application and can be inefficient in reducing vibrations, especially when the actual vibration characteristics of the object differ from assumed characteristics.
Innovation Solution
The solution involves using a standardized design for both vibration detection and generation means, allowing for efficient placement and number determination based on the object's characteristics. This includes using piezoelectric sensors and actuators with uniform shape and nature, connected through a control system that can adjust parameters for optimal vibration reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active damping devices are specially designed for each application object, then vibration reduction performance is improved, but design complexity and cost increase
Solution Approach 1:
The patent applies universality by creating a standardized active damping device that can be applied to multiple different application objects. The device uses common components (piezoelectric sensors and actuators with uniform shape and nature) that can be configured for different applications without requiring complete redesign, thus reducing design complexity while maintaining vibration reduction effectiveness across various scenarios
Solution Approach 2:
The patent utilizes parameter changes by allowing the control system to adjust control parameters based on the specific characteristics of each application object. Instead of redesigning the entire device, the system modifies operational parameters to adapt to different vibration characteristics, achieving application-specific performance with a standardized hardware platform
2Reliability
If active damping devices are specially designed for each application object, then vibration reduction performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost through universality by designing a standardized active damping device with common components that can serve multiple applications. The piezoelectric sensors and actuators have uniform shape and nature, allowing for bulk production and standardized assembly processes, thereby lowering per-unit costs while maintaining effective vibration reduction across different applications
3Adaptability or versatility
If control systems are designed in advance for multiple frequencies, then adaptation to different frequency ranges is improved, but development time and cost increase
Solution Approach 1:
The patent applies dynamics by implementing a control system that can dynamically adjust its parameters based on the actual vibration characteristics of the application object. Rather than requiring pre-designed control systems for each frequency range, the system adapts in real-time or near-real-time, reducing development time while maintaining frequency adaptation capability
Solution Approach 2:
The patent uses parameter changes to achieve frequency adaptation without multiple pre-designed control systems. The control system modifies its operational parameters based on the detected vibration frequencies and characteristics, allowing a single control system design to handle multiple frequency ranges through parameter adjustment rather than requiring separate designs for each frequency band
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 approach significantly reduces the time and cost associated with designing active damping devices, allows for rapid adaptation to changing vibration characteristics, and enhances the overall performance of the damping device by effectively reducing vibrations across various frequencies.
Implementation Method 1
a vibration detection means for detecting vibration of the object; a vibration generation means for generating vibration of the object
Implementation Method 2
a vibration generation means for generating vibration of the object, wherein the vibration detection means and the vibration generation means have a uniform shape and a uniform nature
Data Source
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AI summary
A damping device and a design method which can simply provide an active damping device reducing a vibration of a device in which an influence by a vibration is to be reduced. A damping device attached to a structure body of an object of which a vibration is to be reduced, includes vibration detection means for detecting a vibration of a portion of the object; vibration generation means for generating a distortion on a portion of the object; control means for generating a control signal determining driving force of the vibration generation means by a signal from the vibration detection means; and signal input and output means for performing transferring of a signal with the control means. A driving force generation signal is received from outside through the signal input and output means, the driving force corresponding to the driving force generation signal is generated by the control means, the selected vibration generation means is driven by the driving force, and vibration state information obtained from the selected vibration detection means is output from the control means to the outside through the signal input and output means.