Permanent Magnet Gap Control With Hydraulic Force Compensation
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Solution Overview
Problem
Conventional magnetic assembly insertion devices require high precision and complex, expensive driving mechanisms to manage strong nonlinear magnetic forces between permanent-magnet arrays, leading to complexity and expense in design and operation.
Innovation Solution
A permanent magnet insertion device with a hydraulic driving system that adjusts the gap between magnet arrays using a combination of hydraulic and mechanical drivers, allowing for precise control and compensation of magnetic forces, reducing the load on mechanical drivers and enabling a more compact, lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional driving mechanisms are used to position permanent-magnet arrays with high precision, then positioning accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical driving mechanisms with a magnetic coupling system where permanent magnets on the movable array interact with permanent magnets on the fixed array through magnetic attraction and repulsion forces. This magnetic field-based positioning system eliminates the need for complex mechanical actuators, gears, and motors while achieving the required sub-micron positioning accuracy.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the fixed and movable permanent-magnet arrays. The magnetic coupling through the gap allows force transmission and position control without direct mechanical contact, enabling precise positioning with simplified mechanics.
2Force
If additional magnet arrays are utilized to generate counterforce, then magnetic force compensation is improved, but design complexity increases
Solution Approach 1:
The patent converts the harmful magnetic attraction force between the fixed and movable arrays into a beneficial positioning mechanism. By carefully designing the magnetic pole arrangements, the magnetic forces that would normally require compensation are instead used to provide stable, controllable positioning with inherent force balance.
3Force
If conical springs are used to compensate for magnetic force, then force compensation is achieved, but device complexity and expense increase
Solution Approach 1:
The patent replaces mechanical spring-based force compensation with a magnetic field-based system. The magnetic interactions between permanently magnetized arrays provide the necessary force compensation without requiring custom-designed mechanical springs, reducing both complexity and manufacturing cost.
4Force
If hydraulic driver is added to reduce magnetic force load, then mechanical driver load is reduced, but device complexity increases
Solution Approach 1:
The patent replaces the proposed hydraulic driver system with a magnetic field-based driving mechanism. The permanent magnets generate the necessary forces directly through magnetic attraction and repulsion, eliminating the need for hydraulic actuators and their associated fluid systems, thereby reducing overall system complexity while achieving the same load reduction effect.
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 solution provides a compact, lightweight, and cost-effective permanent magnet insertion device with stronger magnetic fields and smaller magnetic field errors, while maintaining precise control over the gap between magnet arrays, optimizing dynamic properties and reducing complexity.
Implementation Method 1
A hydraulic driver is configured to move the first member relative to the second member to increase or to decrease the dimensional value of the gap
Implementation Method 2
The first permanent-magnet and the second permanent-magnet are spaced apart by a gap... the magnetic forces between the arrays are very strong (having a nonlinear dependence on the array position)
Data Source
AI summary
The present technology relates to a permanent magnet insertion device that includes a frame and a plurality of single pole assemblies adjacently disposed within the frame. Each of the single pole assemblies includes a first member bearing a first permanent-magnet and a second member bearing a second permanent-magnet. The first permanent-magnet and the second permanent-magnet are spaced apart by a gap. At least one of the first member or the second member is movable relative to the other of the first member or the second member to increase or to decrease a dimensional value of the gap. A hydraulic driver is configured to move the first member relative to the second member to increase or to decrease the dimensional value of the gap. A mechanical driver is configured to move the first member relative to the second member to increase or to decrease the dimensional value of the gap.