Linear Motor with Segmented Armature Modules
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Solution Overview
Problem
Existing linear motor systems face issues with system accuracy, mechanical complexity, and efficiency due to strong magnetic pull and wear in the guide mechanism, leading to decreased performance and increased weight.
Innovation Solution
A linear motor system with a primary member composed of armature modules and a secondary member featuring alternating magnet poles, where the armature modules are arranged with varying intervals to optimize thrust generation and reduce mechanical interference, allowing for efficient long-distance transport with minimal speed variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a rotary motor is unfolded and arranged in a straight line to generate strong magnetic pull, then thrust is generated, but severe wear of the guide mechanism occurs and system accuracy decreases
Solution Approach 1:
The linear motor is divided into multiple independent armature modules arranged in series along the moving direction. Each module contains coils that can be independently controlled, allowing the magnetic field to be segmented and applied in discrete sections. This segmentation reduces the continuous magnetic pull that causes guide mechanism wear while maintaining overall thrust capability.
Solution Approach 2:
The motor operates by periodically activating different armature modules along the moving direction. Instead of maintaining continuous magnetic pull across the entire length, the system applies magnetic force in periodic pulses to different sections, reducing cumulative wear on the guide mechanism while maintaining motion control.
2Force
If strong magnetic pull is generated between armature core and permanent magnet, then thrust is generated, but mechanical structure becomes complicated and equipment becomes heavy
Solution Approach 1:
The motor structure is divided into lightweight modular armature sections that can be independently supported. Each module contains only the necessary coils and magnetic components, distributing the weight along the moving path rather than concentrating it in a single heavy structure.
Solution Approach 2:
The design replaces heavy mechanical support structures with a distributed system where multiple lightweight armature modules are supported along the track. The magnetic field provides the primary structural support function, eliminating the need for heavy mechanical frameworks.
3Productivity
If armature modules are densely arranged to increase thrust capacity, then motor efficiency increases, but device complexity increases
Solution Approach 1:
The high-density armature modules are designed as standardized, interchangeable units with uniform mounting interfaces. This segmentation allows complex high-capacity configurations to be built from simple repeating modules, reducing the perceived complexity through modularity.
Solution Approach 2:
Each armature module is designed to be universal and multi-functional, capable of operating in different positions and configurations along the track. The same module design can serve multiple purposes depending on its location, reducing the variety of components needed and simplifying the overall 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 configuration enhances system efficiency, reduces weight, and allows for modular assembly, enabling long-distance transport with reduced resource usage and minimal speed differences between travel and target speeds.
Implementation Method 1
applies alternating multi-phase power to the other, so that electromagnetic force acts between them to generate thrust in a certain direction
Data Source
AI summary
A linear motor is provided. The linear motor according to an embodiment of the present disclosure may comprise: a primary member including a plurality of armature modules, each armature module including a magnet core including two or more protruding portions and a coil; and a secondary member including at least one magnet module. The primary member may be fixed and a movable member composed of the secondary member moves by generated thrust. And, along the moving direction, a first interval between first armature modules disposed in a first section may be different from a second interval between second armature modules disposed in a second section after the first section.