Stepper motors are simple and cheap to use, and you don't need to have a fully closed-loop controller to use them accurately. Servomotors are much faster, but for guaranteeable positioning accuracy, ...

In control strategies, an open-loop control system refers to a controller whose action is determined based on predetermined input values without considering feedback. However, a closed-loop controller ...

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 ...

Both of our open-loop control system examples above could easily be converted to closed-loop systems.

Combine the simple and robust closed-loop control of the digital CLZD010 with the current-limited high-side gate drive of the analog LM3485 for the best of the digital and analog worlds.

It’s an Open Source PID controller that also follows the Open Hardware guidelines. [Brett Beauregard] based the project on the newly minted Arduino PID library which he wrote.

A closed-loop identification procedure for pure gain-plus noise processes is presented for a family of disturbances that model drift in a discrete-part manufacturing system. Tuning techniques for the ...