Moving-Magnet Transfer Platform Heat Dissipation and Drag Chain Elimination
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Solution Overview
Problem
Conventional moving-magnet transfer platforms face issues with heat dissipation, increased fabricating costs due to the use of drag chains and high material costs for permanent magnets, and unstable working status due to complex circuitry and current fluctuations.
Innovation Solution
A moving-magnet transfer platform design where the stator part includes a coil assembly, switch elements, a current sensor, an electric angle detector, magnetic field sensors, and a signal processor to control the movement and power distribution, simplifying heat dissipation, reducing the need for drag chains, and stabilizing the working status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drag chain is used to tow and protect the power cable, then the power cable is protected, but the fabricating cost is increased and the available inner space is reduced
Solution Approach 1:
The patent extracts the drag chain from the system by reconfiguring the motor structure. The coil assembly is made stationary in the stator part, eliminating the need for a drag chain to protect the power cable during mover part movement.
Solution Approach 2:
The patent inverts the conventional arrangement by placing the coil assembly in the stator part instead of the mover part. This inversion eliminates the need for a drag chain while maintaining the electromagnetic driving function.
2Productivity
If the coil assembly is continuously moved, then the transfer platform operates, but the power cable is readily abraded
Solution Approach 1:
The patent inverts the conventional arrangement by making the coil assembly stationary in the stator part while the magnet assembly moves in the mover part. This inversion eliminates cable abrasion issues while maintaining continuous operation capability.
Solution Approach 2:
The patent replaces the mechanical drag chain system with an electromagnetic field interaction system where the stationary coil assembly generates magnetic fields that interact with the moving magnet assembly, eliminating mechanical cable protection needs.
3Area of moving object
If the area of the magnet assembly is increased to allow movement in a specified range, then the movement range is improved, but the fabricating cost is increased due to more permanent magnets
Solution Approach 1:
The patent segments the magnetic system into two parts: the magnet assembly in the mover part and the coil assembly in the stator part. This segmentation allows the magnet assembly to be smaller while achieving the required movement range through electromagnetic interaction with the stationary coils.
Solution Approach 2:
The patent changes the operational parameters by using electromagnetic fields from stationary coils to extend the effective movement range, reducing the physical size and material quantity of the magnet assembly needed.
4Temperature
If additional heat dissipating mechanisms are added, then the operating temperature is reduced, but the device complexity is increased
Solution Approach 1:
The patent extracts the heat generation source from the moving part by making the coil assembly stationary in the stator part. This allows heat dissipation to be managed more effectively at a fixed location without adding complex moving heat dissipation mechanisms.
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 enhances heat dissipation efficiency, reduces fabricating costs, increases available space, and stabilizes the working status by passively controlling coil operations and minimizing current fluctuations.
Implementation Method 1
When the electric power flows through the coils, the coil generates a first magnetic field. The first magnetic field and a second magnetic field of the magnetic assembly interact with each other. Consequently, the mover part is correspondingly moved.
Implementation Method 2
since the mover part is continuously moved during the operation of the moving-magnet transfer platform, a drag chain is used to tow and protect the power cable. The use of the drag chain increases the fabricating cost of the moving-magnet transfer platform.
Data Source
AI summary
A moving-magnet transfer platform includes a mover part, a driving part and a stator part. The mover part includes a moving table and a magnet assembly. The stator part includes plural coils, plural switch elements, a current sensor, an electric angle detector, plural magnetic field sensors and a signal processor. The plural switch elements are connected between the driving part and the corresponding coils. When the magnet assembly is moved to a position of the corresponding coil, a magnetic field change is detected by the corresponding magnetic field sensor. The signal processor is used for controlling operations of the plural switch elements. When the magnet assembly is moved to the position of the corresponding coil, the corresponding switch element is turned on under control of the signal processor, so that the moving table is moved with the magnet assembly.