Flywheel Magnetic Sensor Ring for Precise Rotor Sensing
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Solution Overview
Problem
Existing electric motor assemblies lack efficient methods for accurately sensing the rotational movement of rotors, particularly in applications requiring precise control and high torque, such as autonomous guided vehicles.
Innovation Solution
Integration of a flywheel with a rotor shaft, featuring a magnetic sensor assembly and an encoder assembly that includes a magnetic ring and a magnetic sensing chip, to sense the rotational movement of the flywheel, enhancing precision and torque control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional motor assemblies use separate encoder and sensor components, then the motor can achieve basic rotational sensing, but the measurement precision and reliability of rotational sensing deteriorates
Solution Approach 1:
The patent combines the encoder assembly and magnetic sensor assembly into a single integrated encoder housing that is fixed to the motor housing. This merging of previously separate sensing components into one unified assembly improves both the measurement precision and reliability of rotational sensing by ensuring coordinated operation and reducing alignment errors between separate components.
2Measurement precision
If multiple separate sensing assemblies are used for rotational sensing, then comprehensive rotational data can be obtained, but the device complexity increases
Solution Approach 1:
The optical sensor assembly and magnetic sensor assembly are merged into a single integrated encoder housing that is fixed to the motor housing. This consolidation maintains comprehensive rotational sensing capabilities while reducing device complexity by eliminating the need for separate mounting structures, alignment mechanisms, and housing components for individual assemblies.
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 integration provides accurate rotational sensing, enabling precise control and high torque capabilities, suitable for applications like autonomous guided vehicles, by utilizing a magnetic sensor assembly and encoder assembly to enhance motor performance.
Implementation Method 1
a magnetic sensor assembly configured to sense relative movement of the magnetic element
Implementation Method 2
an optical sensor assembly configured to sense relative movement of the optical element
Data Source
AI summary
A motor broadly includes a rotor, a flywheel, and an encoder assembly. The rotor is rotatable about an axis and includes a rotor shaft. The flywheel is fixed to the rotor shaft and is rotatable with the rotor shaft. The encoder assembly includes a magnetic sensor assembly and a sensed magnetic element supported by the flywheel.