Magnetic levitation is a phenomenon that enables objects to float without physical contact. In magnetic levitation systems, continuous measurement of the magnet's position is required to achieve the desired position, as it provides the primary input signal for the control algorithm. In this work, a market survey was conducted to identify a suitable sensing element capable of replacing the pair of Hall sensors in an existing magnetic levitation demonstration system, thereby improving the reliability of position measurement. The existing pair of Hall sensors, an ultrasonic sensor, a LIDAR sensor, and a linear optical sensor were compared. Based on its high sampling rate and reasonable cost, the linear optical sensor was selected for implementation. The sensor was implemented, calibrated, and its performance was evaluated.
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