Design and Analysis of Small Size Eddy Current Displacement Sensor
Sheng‐Ching Wang, Bo-Ren Xie, San-Ming Huang
Abstract
A systematic method is employed for the design and analysis of a small size eddy current (EC) displacement sensor. Simulations are first performed to determine the optimal winding structure and dimensions of the sensor. A linear-fitting approach is then developed for converting the AC displacement signal of the sensor to a DC signal. Finally, a compensation method is proposed for mitigating the temperature drift of the EC sensor under different working temperatures. The experimental results show that the proposed sensor has a sensitivity of approximately 3 μm, a working temperature range of 25-55 °C, and a linearity of ±1.025%.
Topics & Concepts
Eddy-current sensorEddy currentLinearityCompensation (psychology)Sensitivity (control systems)Displacement (psychology)SIGNAL (programming language)AcousticsCurrent (fluid)Current sensorMaterials scienceRange (aeronautics)Electronic engineeringControl theory (sociology)EngineeringElectrical engineeringComputer sciencePhysicsArtificial intelligencePsychoanalysisComposite materialPsychologyControl (management)Programming languagePsychotherapistNon-Destructive Testing TechniquesWelding Techniques and Residual StressesAdvanced Sensor Technologies Research