Active Dampers for Rotating Components Using Radial Segmentation
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Solution Overview
Problem
Existing vibration damping systems for rotating or rotationally symmetrical components, such as wind turbines and aircraft engines, suffer from reduced effectiveness and increased energy consumption due to absorber interference and unwanted torque effects when arranged circumferentially.
Innovation Solution
A method and device utilizing at least three sensors and active absorbers arranged around the component, where measurement signals are converted into tangential and Cartesian signals to generate targeted absorber control signals, minimizing mutual interference and optimizing vibration damping while reducing power consumption and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple active dampers are arranged circumferentially around a rotating component, then vibration damping coverage is improved, but mutual interference between dampers increases and effectiveness decreases
Solution Approach 1:
The patent divides the vibration control task into independent radial segments by orienting each damper's axis of movement radially outward from the rotation axis. This segmentation isolates the action of each damper to its local radial direction, preventing lateral interference with adjacent dampers while maintaining comprehensive circumferential coverage for vibration damping.
Solution Approach 2:
The patent transitions from planar damper arrangement to three-dimensional radial orientation by directing damper axes perpendicular to the rotation axis and radially outward. This dimensional change allows dampers to operate independently in the radial direction while collectively addressing vibrations across all radial positions around the rotating component.
2Reliability
If multiple active dampers are arranged circumferentially around a rotating component, then vibration damping coverage is improved, but energy consumption increases
Solution Approach 1:
The patent segments the vibration control function across multiple radially-oriented dampers, allowing each damper to handle only the vibration component in its specific radial direction. This segmentation enables more efficient energy utilization compared to a few dampers attempting to compensate for all directional vibrations, as each damper operates optimally in its designated radial zone.
Solution Approach 2:
The patent replaces complex mechanical coordination between multiple dampers with a simplified radial orientation system. By fixing each damper's axis radially outward, the system eliminates the need for complex mechanical synchronization mechanisms, reducing energy consumption associated with coordination while maintaining effective vibration damping.
3Reliability
If dampers are arranged circumferentially around a rotating component, then vibration damping is provided, but unwanted torque effects are generated that adversely affect rotation
Solution Approach 1:
The patent segments the force generation of each damper to act purely in the radial direction perpendicular to the rotation axis. This radial segmentation ensures that damper forces are directed outward from the axis rather than tangentially, eliminating torque generation while maintaining vibration damping effectiveness through radial force components.
Solution Approach 2:
The patent employs asymmetric orientation of damper axes relative to the rotation, with each damper positioned and oriented radially outward at its specific circumferential location. This asymmetric radial arrangement ensures that damper forces act perpendicular to the rotation axis, preventing tangential force components that would generate unwanted torque while maintaining optimal vibration damping at each position.
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 solution achieves more effective damping of unwanted vibrations, reduces energy consumption, and minimizes wear on components by precisely controlling absorbers through coordinated signal processing and placement, ensuring uniform damping and reduced harmonic oscillation impact.
Implementation Method 1
the at least three sensors (3) are arranged circumferentially around a component (1), in particular around a rotor, wherein the measuring directions of the at least three sensors (3) are oriented in the local direction of motion
Implementation Method 2
The individual damper control signals (110) are generated from the tangential control signal (106) and the two Cartesian control signals (107)... allowing the active dampers to generate not only forces but also torques
Data Source
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AI summary
The invention relates to a method and a device for damping the vibrations of rotating or rotationally symmetrical components, wherein at least three sensors (3) and at least three active dampers (2) are arranged circumferentially on a component (1). The aim is to achieve the most effective possible vibration damping and to avoid any negative interaction between the individual dampers. For this purpose, the measurement signals (101) of the at least three sensors (3) are converted into a tangential signal (103) and two Cartesian signals (104). Based on the tangential signal (103) and the two Cartesian signals (104), more precise damper control signals (110) can then be generated, with which more effective damping of the vibrations can be achieved.