A versatile Hall magnetometer has been developed, manufactured, calibrated, and turned operational for measurements of the magnetic properties of bulk materials and magnetic microand nanoparticles. The magnetometer was constructed from the combination of various equipments, which was usually available in most laboratories, such as a Hall effect sensor, an electromagnet, a current source, and a ...

An implementation for sinusoidal current control of a slotless Permanent Magnet Synchronous Motor (PMSM) with discrete Hall sensor position feedback is presented. To estimate the rotor position of the slotless PMSM, a flux estimation technique is used that takes advantage of the slotless machine’s characteristically low inductance to limit flux estimation error. The rotor position is estimated ...

Abstract Silicon Hall-effect sensors have been widely used in industry and research fields due to their straightforward fabrication process CMOS compatibility. However, as material property limitations, technicians usually implement complex circuits improve the sensors’ performance including temperature drift offset compensation for fitting tough situation, but it is no doubt that increases des...