Electromagnetic Vibration Control With Tunable Multi-Mode Damping
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Solution Overview
Problem
Existing vibration control systems for heavy machinery are complex, oversized, provide insufficient damping, and lack versatility in controlling vibrations of varying frequencies and magnitudes, requiring extensive calibration.
Innovation Solution
An active vibration control system with an electromagnetic actuator and a moveable control element, allowing multiple modes of vibration, facilitated by a resilient attachment and adjustable current flow, enabling versatile control of vibrations across different frequencies and magnitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If commercially available vibration control systems are used, then vibration damping is provided, but the systems are complex and oversized
Solution Approach 1:
The patent combines the electromagnetic actuator and control element into a single integrated assembly that functions as both actuator and control mechanism. This merging eliminates the need for separate components, reducing system complexity and size while maintaining vibration damping effectiveness.
Solution Approach 2:
The electromagnetic actuator serves multiple functions: it acts as both the actuating mechanism and the control element, and can operate in at least two modes of vibration. This multi-functionality reduces the number of components needed, thereby simplifying the overall system design.
2Device complexity
If single mode vibration control systems are used, then system simplicity is maintained, but versatility in controlling vibrations of different frequencies is limited
Solution Approach 1:
The control element is made movable relative to the electromagnetic actuator, allowing the system to dynamically adjust its characteristics. This mobility enables the system to operate in at least two modes of vibration and adapt to different vibration frequencies, transforming a static single-mode system into a dynamic multi-mode system.
Solution Approach 2:
The patent changes the physical parameters of the system by allowing the control element to move to different positions relative to the electromagnetic actuator. This parameter change enables the system to switch between at least two modes of vibration, expanding its frequency control range while maintaining structural simplicity.
3Reliability
If commercially available control systems are used, then basic vibration control is achieved, but the ability to adjust and tune for changing machine vibration is insufficient
Solution Approach 1:
The movable control element provides dynamic adjustability, allowing the system to be tuned for different vibration conditions. The control element can be repositioned relative to the electromagnetic actuator to change the system's resonant frequencies and damping characteristics, enabling adaptation to changing machine vibration patterns.
4Reliability
If commercially available vibration control systems are used, then vibration damping is provided, but extensive calibration is required due to lack of predictability
Solution Approach 1:
The system is designed with predetermined characteristics through the specific arrangement of the electromagnetic actuator and control element. The at least two modes of vibration are built into the system structure, allowing for predictable performance that reduces the need for extensive field calibration while maintaining reliable vibration damping.
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 provides compact, reliable, and efficient vibration control with tunable modes, capable of damping vibrations at specific frequencies and magnitudes, reducing the need for extensive calibration.
Implementation Method 1
an electromagnetic actuator operable to apply a force on a base structure
Implementation Method 2
the electromagnetic actuator and control element are relatively moveable such that the active vibration control system has at least two modes of vibration
Data Source
AI summary
According to the present invention there is provided an active vibration control system comprising: an electromagnetic actuator and a control element, the electromagnetic actuator being operable to apply a force on a base structure to which the active vibration control system is attachable such that vibrations of the base structure are actively controllable by the application of said force, wherein the electromagnetic actuator and control element are relatively moveable such that the active vibration control system has at least two modes of vibration, and wherein movement of the electromagnetic actuator causes movement of at least a part of the control element.