Segmented Linear Motor Stator Layout for Precise Force Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromagnetic actuators for test machines lack efficiency and precision in applying linear forces, which can lead to inaccurate testing of materials and devices.
Innovation Solution
A linear electric motor design featuring a stator with stacked segments, each comprising a stator portion, back portions, and conductors that encircle an armature, along with laminated stator teeth that can be oriented in specific positions to reduce cogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional electromagnetic actuators are used, then the structure is simple, but the precision and efficiency in applying linear forces deteriorates
Solution Approach 1:
The stator is divided into multiple stacked segments, each with conductors arranged to generate precise magnetic fields. This segmentation allows for optimized force application while maintaining manageable structural complexity through modular assembly.
Solution Approach 2:
The patent transitions from conventional radial flux motors to axial flux configuration, where the magnetic field and force are applied axially rather than radially. This dimensional change enables more efficient linear force application while the stacked segment design manages the resulting structural complexity.
2Productivity
If stacked stator segments with conductors are used, then the efficiency in applying linear forces is improved, but the manufacturing complexity increases
Solution Approach 1:
The stator is constructed from multiple identical or similar stacked segments, each containing conductors. This modular approach improves force application efficiency while facilitating standardized manufacturing processes and assembly, thereby managing manufacturing complexity.
Solution Approach 2:
Multiple stator segments are stacked and combined to form the complete stator structure. This merging of identical components achieves the desired efficiency in linear force application while allowing for simplified manufacturing through repetition of standardized units.
3Object-generated harmful factors
If laminated stator teeth with specific orientations are used, then cogging is reduced, but the assembly complexity increases
Solution Approach 1:
Laminated stator teeth are employed with specific orientations to create asymmetric magnetic paths that reduce cogging effects. The lamination structure and orientation are designed to minimize harmonic distortions while the modular segment design helps manage assembly complexity.
Solution Approach 2:
The stator teeth are locally optimized with specific lamination orientations in different regions to reduce cogging. This localized quality enhancement targets specific problem areas without requiring complete redesign of the entire structure, thereby controlling assembly complexity.
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 design enhances the linear electric motor's ability to apply precise and efficient linear forces, improving the accuracy of tests on materials and devices by minimizing cogging and optimizing force application.
Implementation Method 1
a conductor An armature is configured to travel linearly through the stator during operation
Implementation Method 2
at least one of the plurality of stator teeth comprises a plurality of laminations
Data Source
AI summary
A linear electric motor includes a stator having a plurality of stacked stator segments, wherein at least one of the plurality of stacked stator segment comprises a stator portion, a first stator back portion adjacent the stator portion on a first face of the stator portion, and a conductor. An armature is configured to travel linearly through the stator during operation. The conductor substantially encircles the armature portion.