motion systems

DC Motors – Why Are We Still Using Them?

AC motors are common throughout industry – easily controlled by VFDs and without the maintenance that comes with DC brushes. So then, why are DC motors still used in certain applications? Direct Current (DC) Motors All motors work on the principle of switching magnet forces to rotate a shaft. A DC motor uses direct current … Read more

Using PID and Feedback Loops for Precise Motion Systems

PID controllers are an excellent method of using feedback to turn an otherwise open-loop system into one which can follow a carefully prescribed profile, correcting for inconsistencies caused by the equipment, the environment, and even the products in the manufacturing process. In many systems, it is sufficient to send voltage to a motor or valve, … Read more