An electric eddy current sensor-based angle signal offset self-correction method and device
By establishing a signal correction fitting equation to obtain the correction coefficients, the problem of signal offset in eddy current sensors was solved, and signal self-correction and accurate measurement were achieved.
CN120820053BActive Publication Date: 2026-06-02JIANGSU YUQU TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU YUQU TECHNOLOGY CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing eddy current sensors suffer from signal offset during use, and traditional methods struggle to achieve self-correction through software algorithms.
Method used
By establishing a signal correction fitting equation, correction coefficients α1, β1, α2, and β2 are obtained. These coefficients are then used to perform differential processing and compensation on the signal of the eddy current sensor, thereby achieving self-correction of the angle signal.
Benefits of technology
It achieves self-calibration of the eddy current sensor signal, avoids signal offset, and improves measurement accuracy and reliability.
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Figure CN120820053B_ABST
Abstract
The application relates to an angle signal offset self-correction method and device based on an eddy current sensor, which comprises the following steps S1: initializing an output signal of the eddy current, S2: collecting four-way eddy current signals Sin+, Sin-, Cos+ and Cos- by the sensor and performing differential processing to obtain original SinRaw signals and CosRaw signals, S3: establishing an angle signal correction fitting equation, processing the SinRaw signals and the CosRaw signals, and outputting correction coefficients alpha1, beta1, alpha2 and beta2, wherein alpha1 and alpha2 are gain values, and beta1 and beta2 are offset values, and S4: outputting compensated angle signals Sin theta and Cos theta based on the correction coefficients and outputting an angle; the application has the advantages of signal offset self-correction.
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