The best solar generators in 2026, tested by editors

We tested 20 solar generators to find the most versatile devices that can provide emergency backup power and fuel off-grid ...

MLB great Bryce Harper just had a THIRD of his blood removed. His doctor reveals why sports stars across America want to do the same

Two treatments that can be traced back to the 1800s in their earliest forms have been updated and improved, as a growing ...
The New York Times

The Best Window Fans

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Thom Dunn Thom Dunn is a ...
IEEE

A Variable Rate Supertwisting Sliding Mode Speed Control With Overcurrent Protection for PMSM Considering Aperiodic and Periodic Disturbances

Abstract: Aiming at improving the speed regulation performance of permanent magnet synchronous motor (PMSM) under aperiodic and periodic disturbances, a variable rate supertwisting (VRST) sliding mode ...