Halbach Cylinder Dipole Quadrupole Magnetic Force Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices using dipoles and quadrupoles for moving magnetic objects within containers are limited by the low forces they can generate, making efficient movement and precise control challenging, especially for objects of varying sizes from nanometers to millimeters in diameter.
Innovation Solution
The arrangement of two pairs of dipoles in different planes with two quadrupoles in between, configured as Halbach cylinders, allows for the generation of stronger and controllable magnetic forces, enabling efficient movement and positioning of objects by adjusting the orientation and relative movement of the dipoles and quadrupoles, along with a carriage system for three-dimensional movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If individual magnets are arranged in a ring to rotate and represent dipoles and quadrupoles, then the device structure is simplified, but only low forces can be introduced into the object
Solution Approach 1:
The magnetic field generation system is segmented into distinct dipole and quadrupole components arranged in specific spatial configurations. Two pairs of dipoles are positioned at different planes, while two quadrupoles are arranged in an intermediate plane, allowing independent control and optimization of each segment's magnetic field contribution to achieve high forces while maintaining structural clarity
Solution Approach 2:
The patent transitions from two-dimensional ring arrangements to three-dimensional spatial configurations by positioning dipoles and quadruples in different planes (z-direction) and optimizing their angular orientations. This dimensional expansion enables the superposition of magnetic fields from multiple sources to generate high forces while preserving rotational symmetry and control capabilities
2Force
If dipoles and quadrupoles are arranged in different planes, then particularly great forces can be introduced into the object, but the device complexity increases
Solution Approach 1:
The patent employs asymmetric angular orientations of dipoles and quadrupoles within their respective planes, where each magnetic element is positioned at specific angles (e.g., 0°, 90°, 180°, 270°) to create optimized magnetic field gradients. This asymmetric arrangement within a symmetric multi-plane structure enables high force generation while maintaining overall device symmetry for rotational control
Solution Approach 2:
The device structure nests multiple magnetic components (dipoles and quadrupoles) within concentric cylindrical arrangements, where inner-plane elements are positioned within the spatial envelope of outer-plane elements. This nested configuration allows compact integration of high-force multi-plane arrangements while minimizing the device's overall footprint and structural complexity
3Measurement precision
If the object needs to be moved precisely within the container, then the magnetic fields need to be controllable, but the control complexity increases
Solution Approach 1:
The patent implements dynamic control of magnetic field configurations by enabling independent rotation of dipole and quadrupole assemblies around the container's central axis. This dynamic reconfiguration allows real-time adjustment of magnetic field gradients and directions, enabling precise positioning and manipulation of magnetic objects through time-varying field patterns generated by the rotating multi-plane arrangement
Solution Approach 2:
The system incorporates feedback mechanisms to monitor the position and orientation of magnetic objects within the container, using this information to adjust the rotation speeds, phases, and orientations of dipole and quadrupole assemblies. This closed-loop control enables precise positioning by continuously compensating for deviations through dynamic reconfiguration of the magnetic field sources
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 enables the generation of strong, adjustable magnetic forces for precise control and movement of objects within the container, allowing for efficient movement and centering of objects, suitable for medical applications and examination tools, with the option of magnetic induction for power supply, eliminating the need for batteries or electric lines.
Implementation Method 1
The arrangement of the dipoles and of the quadrupoles in different planes can be structured in a particularly simple manner, in terms of design, according to another advantageous further development of the invention, if magnets are arranged in Halbach cylinders in order to generate the dipoles and the quadrupoles
Implementation Method 2
With this device, it is possible to displace the object within a space. This is done by means of a magnetic force that can be adjusted in terms of intensity and direction
Implementation Method 3
The object driven by the dipoles and the quadrupoles can be held in the center of the magnetic fields, in a simple manner, according to another advantageous further development of the invention, if the carriage can be displaced parallel to the axis of rotation of the Halbach cylinders
Data Source
AI summary
A device for moving a magnetic object in a container has two pairs of dipoles grouped around the container. Between the pairs of dipoles a pair of mutually concentrically surrounding quadrupoles is arranged. The dipoles and the quadrupoles are in the form of a Halbach cylinder. In this way, the magnetic object can be moved through the container particularly efficiently.