Rotary Segment Actuator with Reluctance Boost for Direct Torque
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Solution Overview
Problem
Conventional rotary electromechanical systems require precise and additional mechanical components for rotational actuation, leading to potential operation failures and high manufacturing demands, especially when not mounted correctly.
Innovation Solution
A rotary-segment electromechanical system with a magnetic system comprising a rotating member and pole members designed with reluctance-boost shape contours, utilizing two coils to generate magnetic fields that produce a resultant magnetic force for direct rotational actuation with minimal mechanical parts, enhancing torque and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If additional mechanical components (balls, curved grooves) are used to convert linear movement to rotational motion, then rotational actuation is achieved, but device complexity and manufacturing precision requirements increase significantly
Solution Approach 1:
The patent replaces the mechanical ball-and-groove system with an electromagnetic field-based solution. Two coils generate magnetic fields that directly interact with a rotation member containing magnetic elements, producing rotational motion without mechanical transmission components. This substitution eliminates the need for balls, curved grooves, and associated mechanical linkages, thereby reducing device complexity while maintaining rotational actuation functionality.
Solution Approach 2:
The invention extracts and removes the intermediate mechanical conversion components (balls, curved grooves, inclined planes) from the system. By directly coupling the electromagnetic actuation system to the rotation member, the patent eliminates the mechanical transmission stage, simplifying the overall structure and reducing the number of parts requiring precision manufacturing and assembly.
2Ease of operation
If additional mechanical components are used for rotational actuation, then rotation is achieved, but reliability decreases due to potential operation failures
Solution Approach 1:
By replacing the mechanical ball-and-groove system with an electromagnetic field-based rotation system, the patent eliminates mechanical wear, friction, and potential failure points associated with mechanical components. The electromagnetic system has no contacting moving parts, thereby significantly improving operational reliability and stability.
Solution Approach 2:
The electromagnetic rotation system is self-contained and does not require external mechanical guidance or support structures. The magnetic fields automatically guide the rotation member's movement, eliminating the need for precise mechanical alignment and reducing susceptibility to operational failures from misalignment or component displacement.
3Ease of operation
If mechanical components are used to convert linear to rotational motion, then rotation is achieved, but manufacturing precision requirements become extremely high
Solution Approach 1:
The patent replaces the precision-critical mechanical transmission system with an electromagnetic system that is inherently more tolerant of manufacturing variations. The magnetic field interaction does not require the same level of geometric precision as mechanical ball-and-groove interfaces, thereby reducing manufacturing complexity and cost.
Solution Approach 2:
The invention changes the fundamental operating parameters from mechanical contact and geometric interference to magnetic field interaction. This parameter change allows for greater flexibility in component tolerances and reduces the stringency of manufacturing precision requirements while maintaining effective rotational actuation.
4Ease of operation
If balls move on an inclined plane to convert linear to rotational motion, then rotation is achieved, but the system becomes strongly dependent on mounting direction
Solution Approach 1:
By replacing the gravity-dependent inclined plane mechanism with an electromagnetic field system, the patent eliminates the strong dependence on mounting direction. The magnetic fields can be configured to produce rotational torque regardless of the device's orientation, thereby improving adaptability to different mounting positions and applications.
Solution Approach 2:
The electromagnetic rotation system is designed to function effectively in various orientations and mounting positions. The magnetic field configuration can accommodate different spatial arrangements, making the device universal and adaptable to diverse application scenarios without requiring orientation-specific design modifications.
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 system achieves robust and precise direct rotational actuation with reduced mechanical complexity, maintaining high torque performance and stability, even in lateral orientations, by optimizing magnetic flux and force distribution.
Implementation Method 1
an energizing coil assembly having a first coil and a second coil each generating a magnetic field in response to an energizing current
Implementation Method 2
Magnetic field lines generated by the coils are directed toward the lobes and produce a resultant magnetic force that rotates the lobes toward the pole members
Implementation Method 3
a magnetic system providing a magnetic flux path passing along a plurality of magnetic flux lines of the magnetic field generated by the energizing coil assembly
Data Source
AI summary
An electromechanical system for an electrical switching device includes an energizing coil assembly having a first coil and a second coil each generating a magnetic field in response to an energizing current and a magnetic system providing a magnetic flux path passing along a plurality of magnetic flux lines of the magnetic field generated by the energizing coil assembly. The magnetic system includes a first pole member arranged on an upper side of the first coil, a second pole member arranged on an upper side of the second coil, and a rotation member arranged between the first pole member and the second pole member. The rotation member has a first lobe and a second lobe executing a rotation motion around a central axis. Magnetic field lines generated by the coils are directed toward the lobes and produce a resultant magnetic force that rotates the lobes toward the pole members.