Authored by: George Ellis, Chief Engineer, Servo Systems, Kollmorgen, Radford, Va. Key points: Three key measures — accuracy, response, and robust stability — characterize how servosystems perform.

Transmitting rotary power from one shaft to another is a servo coupling's primary function. Doing this in the most productive manner is a shared goal in industrial applications, which involves ...

Construction machinery does not come much more heavy duty than that which extracts driven steel piles from the ground. But in order to work safely, delicate hydraulic balancing circuits are needed to ...