Hieu Tue Le

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Position sensors using magnetic effects, such as magnetic encoders (MEs), are increasingly used in many industrial applications. These include motor control, electro-mechanical braking systems, and precision measurement systems. The magnetic encoders generally provide a pair of sinusoidal signals dephasing 90deg to each other. Unfortunately, the signals(More)
Magnetic encoders are widely used for speed or position measurement. This research presents a suitable method to correct the quadratic signal from a magnetic sensor. A new quadrature all digital phased-locked loop (QADPLL) method is presented. The method minimizes the effect of amplitude imbalance, noise, phase shift, and signal offsets. It also can solve(More)
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