Suppression Efficiency of the Correlated Noise and Drift of Self-oscillating Pseudo-differential Eddy Current Displacement Sensor

The suppression efficiency of the correlated noise and drift of self-oscillating front-end circuit in a pseudo-differential eddy-current displacement sensor (ECDS) is investigated using COMSOL and MATLAB. The transfer characteristic of the sensor coil, excited at 200 MHz, is obtained through a FE model in COMSOL. The characteristic is linearized...