Magnetic Stabilizing Mass Damper for Broadband Oscillation Suppression

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Solution Overview

Problem

Unwanted oscillations in various applications, such as 3D printing, robotic arms, and human body parts, lead to accuracy and stability issues, and existing dampers using springs and viscous damping liquids are costly, difficult to customize, and require maintenance.

Innovation Solution

A passive broadband mass damper using a magnetic stabilizing mass within a magnetic housing, where the magnetic fields repel the mass to counteract oscillations, eliminating the need for springs and viscous liquids, and providing a wide frequency suppression range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional dampers using springs and viscous damping liquids are used, then oscillation suppression is achieved, but device complexity and maintenance requirements increase

Engineering Contradiction:

Improveoscillation suppression effectivenessVSAvoiddamper structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical dampers using springs and viscous liquids with a magnetic field-based system. The magnetic housing generates magnetic fields that interact with the magnetic stabilizing mass to provide oscillation suppression without mechanical contact, eliminating the need for springs and damping fluids while reducing structural complexity and maintenance requirements

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces magnetic fields as an intermediary between the housing and stabilizing mass. Instead of direct mechanical contact through springs and fluids, the magnetic field serves as the mediating force that transfers and dissipates oscillation energy, enabling contactless damping with reduced complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If traditional dampers are used, then oscillation suppression is achieved, but customization difficulty and cost increase

Engineering Contradiction:

Improveoscillation suppression effectivenessVSAvoidcustomization ease

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent enables easy customization by allowing adjustment of magnetic field parameters (strength, distribution, frequency) and stabilizing mass properties without requiring complex mechanical redesign. This makes it simpler to tailor the dampening characteristics to different application requirements compared to traditional spring-and-fluid systems

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The magnetic field-based system serves multiple functions within a single integrated structure: it provides oscillation suppression, requires no maintenance, and can be easily customized for different applications. This multi-functionality reduces manufacturing complexity and improves ease of customization compared to specialized mechanical dampers

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If magnetic fields are used to repel the stabilizing mass, then oscillation suppression across broad frequency range is achieved, but magnetic field generation requirements increase

Engineering Contradiction:

Improvebroadband oscillation suppressionVSAvoidmagnetic field energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The magnetic housing generates periodic magnetic fields that resonate with oscillations across a broad frequency range. By using periodic magnetic field generation rather than continuous high-energy fields, the system achieves broadband suppression while managing energy consumption through frequency-matched periodic excitation

Inventive Principle:

Principle #19Periodic action

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

Effectively reduces oscillation amplitudes across a broad frequency range without the drawbacks of traditional dampers, offering a cost-effective, low-maintenance solution for improving stability and accuracy.

Implementation Method 1

The magnetic housing may produce magnetic fields that magnetically repel the magnetic stabilizing mass away from the first position at least when the magnetic stabilizing mass is offset from the equilibrium position toward the first position, and that magnetically repel the magnetic stabilizing mass away from the second position at least when the magnetic stabilizing mass is offset from the equilibrium position toward the second position

Methodology Applied

Scientific EffectMagnetic repulsion: Magnetic Field

Data Source

PatentUS11466745B2Apparatus and method for suppressing oscillations

Publication Date: 2022.10.11 STEADIWEAR INC

AI summary

An apparatus for suppressing oscillations of an oscillating body includes a magnetic base and a magnetic stabilizing mass pivotably coupled to the magnetic base by a pivot assembly. The pivot assembly defines a pivot axis about which the magnetic stabilizing mass is pivotable, relative to the magnetic base, between a first position and a second position. The magnetic stabilizing mass has an equilibrium position between the first position and the second position. The magnetic base produces magnetic fields that magnetically repel the magnetic stabilizing mass away from the first position at least when the magnetic stabilizing mass is offset from the equilibrium position toward the first position, and that magnetically repel the magnetic stabilizing mass away from the second position at least when the magnetic stabilizing mass is offset from the equilibrium position toward the second position.