Active Vibration Suppressor for Plate and Rod Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibration control systems, such as the ADD.Pipe system, offer limited control over vibrations in machinery and can suffer from the 'pinning' effect, where vibration reduction at one point exacerbates it at others, particularly in nautical vessels and machinery systems.
Innovation Solution
An apparatus comprising a machine, a rod, and a plate, where an active vibration suppressor is mounted on the rod, and a controller is used to apply forces and moments to the rod to minimize vibrations on the plate, utilizing actuators such as magnetostrictive, voice-coil, or piezo-electric devices to control vibrations in multiple degrees of freedom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the ADD.Pipe system with linear actuators is used to damp vibrations in pipes, then vibrations at the attachment point are reduced, but the system offers limited control and may suffer from pinning effects
Solution Approach 1:
The system employs dynamic control capabilities with actuators that can independently adjust forces in multiple directions (axial, radial, tangential) based on real-time vibration measurements. This dynamic adaptability allows the system to respond to varying vibration conditions and frequencies, overcoming the limited control of static or single-degree-of-freedom systems like ADD.Pipe.
Solution Approach 2:
The invention extends vibration control from a single point or single degree of freedom to multiple dimensions by controlling vibrations in axial, radial, and tangential directions simultaneously. This multi-dimensional control approach prevents the pinning effect and provides comprehensive vibration suppression throughout the rod-plate system.
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
Achieves significant reduction in plate vibrations, with simulations and experiments showing a mean suppression of up to 50 dB across a broad frequency range, effectively addressing the limitations of existing systems by controlling vibrations in both the plate and rod, including those transmitted through flexible couplings.
Implementation Method 1
utilizing actuators such as magnetostrictive, voice-coil, or piezo-electric devices to control vibrations
Implementation Method 2
utilizing actuators such as magnetostrictive, voice-coil, or piezo-electric devices to control vibrations
Implementation Method 3
utilizing actuators such as magnetostrictive, voice-coil, or piezo-electric devices to control vibrations
Implementation Method 4
a controller configured to control the active vibration suppressor to reduce vibrations of the plate
Data Source
AI summary
A machine is on a first side of a plate. A cable, a bundle of cables, a pipe carrying a fluid to or from the machine, a conduit, or any combination of these, passes along or through the plate. The plate is susceptible to vibrations arising from operation of the machine. An active vibration suppressor is mounted on the cable(s), pipe, or conduit, and a controller is configured to control the active vibration suppressor to suppress vibrations of the plate.