Magnetic Wheel Adhesion Control Using Internal Short-Circuit Conductors
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Solution Overview
Problem
Existing magnetic wheels struggle to achieve a strong magnetic grip on ferromagnetic surfaces while allowing easy disengagement, necessitating the incorporation of a magnetic switch for vehicles like UAVs to prevent inadvertent disengagement.
Innovation Solution
A wheel design utilizing internal short-circuit conductors and serpentine isolator rings to control magnetic adhesion by altering the magnetic flux between magnets and a ferromagnetic surface through disc rotation, enabling both strong adhesion and easy disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a strong magnetic flux is generated between the magnets and ferromagnetic surface, then the adhesion of the wheel to the ferromagnetic surface is increased, but a strong pulling force is required to overcome the magnetic adhesion to disengage the vehicle
Solution Approach 1:
The patent applies the dynamics principle by making the magnetic adhesion controllable rather than static. The outer annular disc can be rotated relative to the inner annular disc, which changes the position of the serpentine isolator ring and thereby dynamically adjusts the magnetic flux path. This allows the system to switch between high adhesion (when isolator ring blocks the path) and low adhesion (when isolator ring allows the path), enabling easy disengagement without sacrificing strong attachment capability.
2Ease of operation
If the serpentine isolator ring is positioned to allow magnetic interaction between the outer discs and conducting ring, then the magnetic flux is decreased to reduce adhesion, but the adhesion strength becomes insufficient for stable attachment
Solution Approach 1:
The system uses dynamic repositioning of the serpentine isolator ring through rotation of the outer annular disc. When easy disengagement is needed, the isolator ring is positioned to create a second magnetic flux path that reduces adhesion. When stable attachment is needed, the isolator ring is repositioned to block the magnetic path and maximize adhesion. This dynamic adjustment resolves the contradiction between ease of disengagement and sufficient adhesion strength.
3Adaptability or versatility
If a magnetic switch is incorporated into the wheel to control adhesion, then both strong magnetic grip and easy disengagement can be achieved, but the device complexity increases
Solution Approach 1:
The patent applies the self-service principle by using the rotation of the outer annular disc itself to control the magnetic adhesion, rather than requiring a separate magnetic switch mechanism. The serpentine isolator ring integrated into the outer disc automatically adjusts the magnetic flux path based on its rotational position, making the wheel's own motion the control mechanism. This reduces device complexity while maintaining adaptability.
Solution Approach 2:
The control function for magnetic adhesion is merged with the structural components of the wheel. The serpentine isolator ring is integrated into the outer annular disc, and the rotation of this disc simultaneously serves both structural and control functions. This merging of control and structural elements reduces overall device complexity while achieving the desired adaptability.
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 effectively controls magnetic adhesion by increasing or decreasing the magnetic flux to ensure stable attachment and detachment of vehicles on ferromagnetic surfaces.
Implementation Method 1
the curves of the serpentine isolator ring are disposed in a first position relative to the plurality of magnets to magnetically isolate the pair of outer discs from the conducting ring
Implementation Method 2
generating a first magnetic flux between the plurality of magnets and the ferromagnetic surface to increase the adhesion of the wheel to the ferromagnetic surface
Implementation Method 3
at least one outer annular disc is rotated about the axle relative to the inner annular disc to dispose the curves of the serpentine isolator ring in a second position relative to the plurality of magnets to allow magnetic interaction between the pair of outer discs and the conducting ring
Implementation Method 4
allow magnetic interaction between the pair of outer discs and the conducting ring, thereby generating a second magnetic flux between the plurality of magnets and the ferromagnetic surface to decrease the adhesion of the wheel to the ferromagnetic surface
Data Source
AI summary
A system and method control magnetic adhesion of a wheel to a surface using internal short-circuit conductors. The method includes providing the wheel having a first disc, apertures retaining magnets, and a conducting ring, and a second disc. In a first configuration, the second disc is isolated from the conducting ring to generate a first magnetic flux to increase adhesion. In a second configuration, magnetic interaction of the second disc and the conducting ring generates a second magnetic flux to decrease adhesion. The system implements the method.