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Finite Element Modelling of a Field-Sensed Magnetic Suspended System for Accurate Proximity Measurement Based on a
Amor Chowdhury1, Andrej Sarjaš2
1Margento R&D, Gosposvetska cesta 84, Maribor 2000, Slovenia. amor.chowdhury@margento.com.
Sensors (Basel, Switzerland)
|September 21, 2016
Summary
Accurate distance measurement in magnetic suspension systems is improved using a novel sensor fusion algorithm. This approach enhances proximity sensor reliability by mitigating external magnetic disturbances for better system operation.
Area of Science:
- Electromagnetism and Control Systems Engineering
- Sensor Fusion and Signal Processing
Background:
- Magnetic suspension systems require precise distance measurements for stable operation.
- Hall effect proximity sensors in these systems are susceptible to external magnetic interference, compromising accuracy and reliability.
- Existing methods struggle to overcome signal disturbances, limiting application usability.
Purpose of the Study:
- To develop an accurate distance measurement method for field-sensed magnetic suspension systems.
- To enhance the reliability of proximity measurements despite external magnetic disturbances.
- To introduce a novel compact electro-magnetic actuator with an integrated proximity sensor.
Main Methods:
- Implementation of a sensor fusion algorithm based on the Unscented Kalman Filter.
- Derivation of a nonlinear dynamic model using the Finite Element Modelling (FEM) approach for accurate parameter estimation.
- Design and parameter tuning of the Unscented Kalman Filter for real-time application.
Main Results:
- The sensor fusion algorithm effectively mitigates external magnetic influences on the Hall effect sensor.
- Finite Element Modelling provided a more accurate dynamic model, improving parameter estimation.
- Real-time implementation demonstrated significantly enhanced accuracy and reliability in proximity measurements.
Conclusions:
- The proposed Unscented Kalman Filter-based sensor fusion algorithm successfully enhances proximity measurement accuracy in magnetic suspension systems.
- The novel compact electro-magnetic actuator with a built-in proximity sensor offers a reliable solution for precise distance sensing.
- This approach improves the overall usability and dependability of magnetic suspension applications.
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