Wheel Bearing Coil Detector for Lateral and Vertical Force Sensing
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Solution Overview
Problem
Existing vehicle systems lack effective sensors to accurately detect forces acting on wheels, such as lateral and vertical loads, which are crucial for stable vehicle running control.
Innovation Solution
A detector system comprising a bearing, a detection target, a receiving coil, and an excitation coil is used to calculate forces on a wheel by detecting displacement through changes in induced voltage signals from coils due to the application of AC excitation voltage, allowing for precise detection of lateral and vertical forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensors are used to detect wheel forces, then the system structure remains simple, but measurement precision is insufficient for accurate lateral and vertical force detection
Solution Approach 1:
The patent replaces conventional mechanical force sensors with an electromagnetic detection system consisting of excitation coils and receiving coils. The bearing inner ring functions as a detection target that modulates magnetic flux in response to displacement caused by wheel forces, converting mechanical force measurement into electromagnetic signal detection for higher precision
Solution Approach 2:
The bearing inner ring serves dual functions: it mechanically supports the rotating body while simultaneously acting as a detection target for force measurement. This multi-functionality eliminates the need for separate force sensors, reducing device complexity while maintaining high measurement precision
2Reliability
If no force detection system is implemented, then the device complexity remains low, but vehicle running control stability is compromised
Solution Approach 1:
The bearing's inner ring automatically serves as the detection target without requiring additional sensing components. The existing bearing structure performs both mechanical support and force detection functions, enabling reliable vehicle running control while minimizing added system complexity
Solution Approach 2:
The bearing inner ring acts as an intermediary between the mechanical force application and the electromagnetic detection system. It translates physical displacement caused by wheel forces into modulated magnetic flux signals that can be accurately measured by the receiving coils
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 enables accurate calculation of lateral and vertical forces acting on wheels, enhancing vehicle stability and control by providing real-time data for vehicle running control systems.
Implementation Method 1
a receiving coil and an excitation coil... output an AC voltage signal in response to the excitation coil receiving the AC excitation voltage
Data Source
AI summary
A detector is adapted to a machine including a rotating body. The detector includes a bearing, a detection target, a receiving coil and an excitation coil. The bearing rotatably supports the rotating body relative to a base portion of the machine. The receiving coil includes an outer coil and an inner coil. The excitation coil receives an AC excitation voltage. The outer coil and the inner coil output an AC voltage signal having an amplitude varying with a displacement of the detection target in a direction perpendicular to an axial direction, in response to the excitation coil receiving the AC excitation voltage.