The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...

Forbes contributors publish independent expert analyses and insights. Scott Hutcheson teaches leadership at Purdue University. When disruption strikes, leaders often find themselves overwhelmed by a ...

Proportional-integral-derivative (PID) is the most common industrial technology for closed-loop control. A proportional-integral-derivative (PID) controller can be used to control temperature, ...

A linear control variable yields a uniform surge margin across the full operating range and simplifies both closed-loop and ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...