Magnetic Sensor Array Signal Processing Based on Kalman Filters for Measuring DC Current

摘要

Magnetic Sensor Array has been proposed to measure electrical current in a non-contact way. Signal processing techniques are employed in handling the sensor outputs to achieve higher accuracy. A filtering method based on Kalman Filters is presented to reduce the impact of the interference magnetic field on DC current measurement. It's also capable of decreasing the measurement error caused by the uncertainty of the sensors' positions. Simulation results on the performance of the filtering method are satisfying.