Peter Nachtwey


PLM, Control Design March 31, 2015

Feed forwards augment PID control

In closed-loop motion control applications, it is common to multiply the target speed and target acceleration by the velocity and acceleration feed forwards to generate the feed forward’s contribution to the control output. Feed forward augmentation is a prediction technique that estimates the output from a proportional-integral-derivative (PID) control algorithm without waiting for the PID algorithm to respond. Feed forward reduces the error faster or keeps the error smaller than relying on the PID algorithm alone.

By Peter Nachtwey
Simulators, Optimizers October 14, 2011

FAA uses electrohydraulic controls for runway testing

Programmable closed-loop motion controllers make hydraulic-actuated testing more flexible and precise, saving time and money, according to test engineers at the Federal Aviation Administration (FAA) National Airport Pavement Test Facility in Atlantic City, N.J.

By Peter Nachtwey
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