Multimodal Electromagnetic Vibration Control for Base Structures
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Solution Overview
Problem
Existing vibration control systems for heavy machinery are complex, oversized, and lack versatility in addressing changing vibration frequencies and magnitudes, with limited applicability and requiring extensive calibration.
Innovation Solution
An active vibration control system featuring a multimodal electromagnetic actuator and control element, allowing for multiple modes of vibration through relative movement, enabling adjustment and tuning of vibration control to various frequencies and magnitudes with a single actuator, reducing complexity and size.
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 multiple vibration control functions into a single integrated device. The vibration control system integrates a drive mechanism, control mechanism, and proof mass into one unified structure that can control vibrations in multiple directions and frequencies simultaneously, eliminating the need for multiple separate control systems
Solution Approach 2:
The vibration control system is designed with universal applicability across different vibration frequencies and magnitudes. The electromagnetic actuators and control elements can operate in multiple modes to address various vibration characteristics, making the system versatile for different engine types and vibration conditions without requiring separate specialized systems
2Device complexity
If single-mode vibration control systems are used, then the system structure is simple, but the applicability is limited to single frequency vibrations
Solution Approach 1:
The system incorporates dynamic adjustability through electromagnetic actuators that can change their operational characteristics in real-time. The control elements can be repositioned and the electromagnetic fields can be modulated to adapt to different vibration frequencies and magnitudes, transforming a static single-mode system into a dynamic multi-mode system
Solution Approach 2:
The vibration control system utilizes parameter changes in the electromagnetic actuators to achieve multiple vibration modes. By adjusting current magnitude, frequency, and phase in the electromagnetic coils, the system can control vibrations across a range of frequencies and amplitudes, effectively changing the operational parameters to match different vibration conditions
3Device complexity
If commercially available control systems lack tuning capability, then the system is simple, but extensive calibration is required
Solution Approach 1:
The vibration control system incorporates self-tuning capability through feedback mechanisms and adaptive control algorithms. The system can automatically detect vibration characteristics and adjust its control parameters without external intervention, enabling self-calibration and eliminating the need for extensive manual setup and calibration procedures
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 effective, versatile vibration control across different frequencies and magnitudes, simplifying construction, reducing costs, and enhancing reliability by allowing multiple degrees of freedom with a single actuator, facilitating precise tuning and compact design.
Implementation Method 1
an electromagnetic actuator 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
Data Source
AI summary
According to the present invention there is provided an active vibration control system comprising: a driving mechanism and a control mechanism comprising an electromagnetic actuator, the driving mechanism 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 driving mechanism and control mechanism are relatively moveable such that the active vibration control system has at least two modes of vibration, and wherein movement of the driving mechanism causes movement of at least a part of the control mechanism.