Combined Magnet Angular Displacement Detection
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Solution Overview
Problem
Conventional systems using a single magnet for motor angular displacement detection suffer from excessively scattered magnetic field lines, which interfere with signal transmission, particularly in applications like unmanned aerial vehicles (UAVs).
Innovation Solution
A combined magnet structure comprising a first magnet, a weak magnetic layer, and a second magnet, stacked with opposite and parallel magnetic pole directions, is used in conjunction with a Hall sensor to detect angular displacement, enhancing magnetic field strength and reducing diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single magnet is used for angular displacement detection, then the detection function is achieved, but the magnetic field lines are excessively scattered causing interference with other signals
Solution Approach 1:
The patent combines two magnets with opposite magnetic pole directions into a single integrated magnet structure. This merging creates a combined magnetic field where the scattered field lines from each individual magnet are counterbalanced by the opposite polarity of the other, reducing overall magnetic field diffusion and interference with surrounding signals while maintaining effective angular displacement detection capability
Solution Approach 2:
The patent uses a composite magnetic structure consisting of two different magnet assemblies with opposite polarities. This composite arrangement creates a balanced magnetic field configuration that achieves both detection precision and reduced electromagnetic interference, effectively combining the benefits of magnetic field strength with reduced field scattering
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 combined magnet design increases magnetic field strength at poles and reduces interference with surrounding signals, improving the accuracy of angular displacement detection and minimizing signal disruption.
Implementation Method 1
a Hall sensor, used to detect an angular displacement of the combined magnet
Data Source
AI summary
The present invention relates to the field of motor detection, and in particular, to an apparatus for detecting an angular displacement, a system for controlling a rotation angle of a motor, a gimbal, and an aircraft. The apparatus for detecting the angular displacement provided the present invention includes a combined magnet, a Hall sensor, and a transmission component. The combined magnet includes a first magnet, a weak magnetic layer, and a second magnet that are sequentially stacked. Magnetic pole directions of the first magnet and the second magnet are opposite and parallel to the weak magnetic layer. The transmission component is connected to the combined magnet, and drives the combined magnet to rotate, or, the transmission component is connected to the Hall sensor, and drives the Hall sensor to rotate. the apparatus for detecting an angular displacement provided the present invention two magnets are combined together to form a combined magnet whose magnetic poles intersect each other to increase magnetic field strength at two poles of the magnet and reduce magnetic field diffusion, so that the apparatus for detecting an angular displacement provided the present invention can reduce interference to surrounding signals from magnetic field.