Optimal Design of Angular Displacement Sensor with Shared Magnetic Field Based on the Magnetic Equivalent Loop...

Area of Science:

• Sensor Technology
• Electromagnetics
• Finite Element Analysis

Background:

• Angular displacement sensors with shared magnetic fields offer high accuracy and environmental adaptability.
• Optimizing the multi-pole, double-layer 3-D structure of these sensors using the time stepping finite element method (TSFEM) is computationally intensive and costly.

Purpose of the Study:

• To propose and validate a magnetic equivalent loop method (MELM) for simplifying the structural optimization of angular displacement sensors.
• To develop a mathematical model integrating mechanical parameters, winding coefficients, and input voltage for induced voltage calculation.

Main Methods:

• Developing a magnetic equivalent loop method (MELM) to model the sensor's magnetic field.
• Integrating sensor parameters (mechanical structure, winding coefficients, input voltage) into a mathematical model.
• Comparing MELM calculation results with time stepping finite element method (TSFEM) simulations.
• Fabricating a sensor prototype to experimentally validate the MELM's optimization effectiveness.

Main Results:

• The magnetic equivalent loop method (MELM) provides a simplified and economical approach to sensor design optimization.
• Calculations using the MELM show good agreement with TSFEM simulation results.
• Experimental validation confirms the effectiveness of the MELM for optimizing sensor performance.

Conclusions:

• The MELM is a viable and efficient alternative to TSFEM for the optimal design of angular displacement sensors.
• This method significantly reduces the time and cost associated with sensor development.
• The proposed method enhances the practical design process for high-accuracy angular displacement sensors.