Magnetic Potential Transducer Using Orthogonal Fields
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Solution Overview
Problem
Micro transducers face challenges in achieving high driving force and low-frequency performance due to size limitations, leading to low energy conversion efficiency and increased power consumption, with existing designs suffering from magnetic leakage and inefficient energy conversion.
Innovation Solution
A magnetic potential transducer is designed with a fixed and movable component, utilizing a static and alternating magnetic field to drive the movable component, where the magnetic conductive material converges the fields, enhancing driving force and reducing resonant frequency through inverse stiffness without altering the product size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the micro transducer uses traditional moving iron or moving coil designs, then the structure can be implemented, but the magnetic leakage is high and energy conversion efficiency is low
Solution Approach 1:
The patent replaces traditional mechanical drive systems with a magnetic potential field-based system. By using a magnetic conductive material that responds to magnetic potential differences rather than direct electromagnetic force, the system achieves higher energy conversion efficiency and reduces magnetic leakage, as the magnetic field interacts with the material's magnetic properties rather than requiring large current densities that cause leakage.
Solution Approach 2:
The patent changes the fundamental operating parameter from electromagnetic force to magnetic potential. By controlling the magnetic potential distribution through the magnetic conductive material's placement and geometry, the system optimizes energy conversion while minimizing magnetic leakage, as the magnetic potential gradient provides a more efficient energy transfer mechanism.
2Volume of moving object
If the micro transducer is made smaller to meet size requirements, then the device becomes more portable, but the resonant frequency increases and low-frequency performance deteriorates
Solution Approach 1:
The patent changes the magnetic potential distribution parameters to achieve lower resonant frequencies in smaller devices. By optimizing the magnetic conductive material's geometry, position, and magnetic properties, the system creates more effective magnetic potential gradients that can drive lower-frequency vibrations without requiring increased device size, thus maintaining both compactness and low-frequency performance.
Solution Approach 2:
The patent employs magnetic conductive materials with specific composite properties that combine high magnetic permeability with appropriate electrical conductivity. This composite material approach allows the small transducer to achieve enhanced magnetic coupling and lower resonant frequencies, as the material's unique properties enable more efficient magnetic field utilization in compact dimensions.
3Length of moving object
If the vibration stroke is reduced to fit size constraints, then the transducer becomes more compact, but the driving force decreases
Solution Approach 1:
The patent substitutes direct mechanical drive with magnetic potential-based actuation. The magnetic conductive material experiences forces derived from magnetic potential gradients, which can generate sufficient driving force over shorter distances. This magnetic interaction mechanism provides higher force density compared to traditional electromagnetic drives, compensating for the reduced vibration stroke in compact designs.
Solution Approach 2:
The patent optimizes magnetic potential parameters to maximize driving force within limited displacement. By controlling magnetic flux density, potential gradient magnitude, and magnetic conductive material properties, the system achieves high force output over short strokes, as the magnetic potential mechanism provides more efficient energy conversion and higher force density than conventional methods.
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 magnetic potential transducer improves driving force and low-frequency performance by effectively utilizing the interaction between static and alternating magnetic fields, increasing energy conversion efficiency and reducing resonant frequency, thus meeting the requirements of electronic products.
Implementation Method 1
at least a part of the magnetic conductive material is placed in an area where the alternating magnetic field and the static magnetic field overlap, to converge the static magnetic field and the alternating magnetic field
Implementation Method 2
a magnetic field force generated by an interaction between the static magnetic field and the alternating magnetic field acts on the magnetic conductive material
Implementation Method 3
at least one static magnetic field generating device, wherein a static magnetic field is formed on the magnetic potential transducer by the static magnetic field generating device
Implementation Method 4
at least one alternating magnetic field generating device, wherein an alternating magnetic field is generated on the magnetic potential transducer by the alternating magnetic field generating device, and the alternating magnetic field is orthogonal or partially orthogonal to the static magnetic field
Data Source
AI summary
Disclosed is a magnetic potential transducer, comprising a fixed component and a movable component. The fixed component comprises: at least one static magnetic field generating device, the static magnetic field generating device forms a static magnetic field on the magnetic potential transducer; and at least one alternating magnetic field generating device, the alternating magnetic field generating device generates an alternating magnetic field on the magnetic potential transducer, and the alternating magnetic field is orthogonal or partially orthogonal to the static magnetic field. The movable component comprises at least one movable device and at least one suspension device, the movable device is provided with a magnetic conductive material, the magnetic conductive material moves in the magnetic potential transducer; at least a part of the magnetic conductive material is provided in an area where the alternating magnetic field and the static magnetic field overlap; a magnetic field force generated by the interaction.