April 1999
Air bearings take off
Recent developments are making air bearings a viable alternative when precision and accuracy are a must...
Coupling Cautions
Flexible coupling forces can shorten the life of shafts and bearings. Accounting for them in the design phase can minimize such damage...
Drives in Position
Adjustable-speed drives add part positioning to their control capabilities...
Silicon in Motion
More micromachined devices are emerging from research laboratories and many of them will change the way you design motion systems...
Forward progress
PID velocity control, as discussed in PT Design, March 1999, is quite common in analog motor drives. It's simple to implement and generally provides good performance...
MSD 101: Electronic Motion Control
All brushless motors can handle this profile. But it may not be the best choice for brush-type. Brush commutation limits usable acceleration torque...
Boy on a string
Life is its own balance. For every thorn, there's a rose. And for every disappointment, hope and inspiration...
Fun With Fundamentals: Problem 224
Will the night crew have a mess on its hands? You tell us according to this month's problem submitted by Paul Gray of Stevensville, Mich...
