Magnetic Suspension Decoupling for Shock Isolation
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Solution Overview
Problem
Existing suspension arrangements face challenges in balancing stability and shock absorption, as soft isolation compromises stability, while rigid suspension during normal operation fails to adequately protect against shocks, leading to complex and expensive solutions.
Innovation Solution
A suspension arrangement featuring a first suspension element directly connecting an object to a frame and a second suspension element using magnetic coupling, which decouples from the object when excitation forces exceed a threshold, allowing for instantaneous switching between rigid and soft states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the suspension is made soft to absorb impacts, then shock absorption is improved, but stability deteriorates
Solution Approach 1:
The suspension system dynamically changes its characteristics based on operating conditions. During normal operation, the magnetic coupling maintains a rigid connection for stability. During shocks, the magnetic coupling decouples when excitation forces exceed the magnetic coupling force, allowing soft isolation. This dynamic transition resolves the contradiction between stability and shock absorption.
Solution Approach 2:
The system changes the effective stiffness parameter of the suspension by transitioning between two states: coupled (rigid) and decoupled (soft). The magnetic coupling force acts as a threshold that determines when the parameter transition occurs, allowing the system to adapt to different operating conditions and resolve the stability-shock absorption trade-off.
2Stability of the object's composition
If the suspension is made rigid to maintain stability, then stability is improved, but shock absorption deteriorates
Solution Approach 1:
The suspension transitions from a static rigid state to a dynamic system that can become soft on demand. The magnetic coupling maintains rigidity during normal operation but automatically decouples during shocks, allowing the system to achieve both stability during normal use and shock absorption during impacts without requiring complex active control.
3Object-affected harmful factors
If active sensors and electronics are added to optimize suspension, then shock absorption is improved, but device complexity increases
Solution Approach 1:
The magnetic coupling automatically senses and responds to shock conditions without external control systems. When excitation forces exceed the magnetic coupling force, the coupling naturally decouples, providing shock absorption. This passive self-regulating mechanism eliminates the need for sensors, actuators, and control electronics while achieving adaptive shock protection.
Solution Approach 2:
The patent replaces complex electronic control systems with a simple magnetic coupling mechanism. The magnetic force naturally provides the threshold-based switching behavior that would otherwise require sensors and controllers, substituting a delicate electronic system with a robust passive mechanical-magnetic 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
This solution provides enhanced isolation properties, significantly reducing impact transmission, increasing durability and stability, and is simpler and more affordable than active or semi-active systems, with the ability to revert for repeated use.
Implementation Method 1
a second suspension element, which suspends the object to the frame through a magnetic coupling between the object and the second suspension element. The magnetic coupling provides a magnetic coupling force
Implementation Method 2
The magnetic coupling provides a magnetic coupling force to act as a threshold such that the suspension arrangement is designed to magnetically decouple the second suspension element from the object when the excitation force transmitted between the frame and the object exceeds the magnetic coupling force
Data Source
AI summary
A simple and robust suspension arrangement is provided for taking into account different suspension modes without the need for excessive sensoring or electronics. The novel suspension arrangement includes a first suspension element, which directly suspends the object to the frame, and a second suspension element, which suspends the object to the frame through a magnetic coupling between the object and the second suspension element. The magnetic coupling provides a magnetic coupling force (Fh) to act as a threshold such that the suspension arrangement is designed to magnetically decouple the second suspen-sion element from the object when the excitation force (Fe) transmitted be-tween the frame and the object exceeds the magnetic coupling force (Fh).