Abstract: Kalman filter (KF) is increasingly attracted for sensorless control of surface permanent magnet synchronous motors (SPMSMs) due to its strong robustness against measurement and system noise.

A faceted inner surface characterises the basin, while the outer sink is minimalistic and smooth. "Similar to a cut crystal, the precisely crafted geometric surfaces come together to form a ...

Or is it? To push the crystal radio into the future a bit, [tsbrownie] tried to design a receiver around standard surface-mount inductors, and spoiler alert — it didn’t go so well. His ...