June 1999
Directions in motor protection
Through better sensing technology and algorithms, the latest motor protection devices guard motors from an array of common problems. And they will do even more over the next few years...
Ball screws come in from the cold
New technology turns out rolled ball screws with positioning accuracy almost equal to precision ground screws...
Scatching the surface
These new high-tech bearings may look damaged, but the pits and scratches you see are actually microscopic canals that pump lubricants across contact surfaces...
Gentlemen, start your vector drives
Before digital ac drives, there was only one way to detect engine defects. Now, there's an alternative...
Taking the guesswork out of plain bearings
What designers don't know about polymer plain bearings could hurt them...
Lawn and order
A few weeks ago, I stopped at a Sears Hardware store to look at lawn mowers...
Fun with Fundamentals: Problem 226
The game was already out of hand for Smokin' Joe Brown of the Hooterville Mud Hens when Slim Slam stepped up to the plate...
About phase
Last month we discussed control loop instability and how it comes from a "sign reversal" in the loop...
MSD 101: Senors & Signals
Unlike their analog counterparts, digital controllers don't read every point of a signal...
