In motion control applications, you frequently hear all sorts of loops -- open, closed, current, torque, speed, voltage, and so on. Here, we define and explain these terms.

A step-by-step guide on three ways to close the current control loop using the hall sensor feedback signal in totem-pole bridgeless PFCs.

Open-loop current sensors have a definite price advantage over closed-loop counterparts. While you can use them in drive applications where torque accuracy isn't demanding — such as pump and fan ...

Santa Clara, CA – December 17, 2012 – New Focus™, a Newport Corporation Brand, announces the new Model 8742 Open-Loop Picomotor controller/driver module with 4 channels. The compact, single-box design ...

From Air to Electrons The now standard 4-20 mA current loop for process control descends directly from an early innovation in industrial automation, pneumatic process control.

Many variables There are many variables to consider when deciding between an open-loop or closed-loop heating control system for an industrial application. Both methods offer great benefits, but ...

For anyone with interest in electric vehicles, especially drives and control systems for EV’s, the Endless-Sphere forum is the place to frequent. It’s full of some amazing projects cove… ...

Closed-loop control allows single-phase ac motors to close the gap in performance and efficiency that exists between these motors and other higher-performance, higher-cost motors.