Feed forward feature for digital piezo controllers
From now on, regulators of digital piezo controllers by piezosystem jena contain a practical feed forward feature. How does that affect positioning?
Thanks to combining controller output and reference input, the overall controlling of a piezo actuator is more dynamic. Motion guidance shows increased precision and the desired position can be reached much faster. Amplitude and phase errors are reduced as well without impacting the overall stability of the system. Depending on the implementation of the feed forward, hysteresis can be almost completely compensated. In open loop operation, signal transmission is more linear. In closed loop operation remaining non-linearities are eliminated by the regulator.
Image: Phase response of a test actuator with and without feed forward. With Feed forward, phases fall at far higher frequencies. Reference behaviour improves over a much increased spectral density.
To learn more about the feed forward feature of our digital piezo amplifiers, please contact us via sales(at)piezojena.com or call +49(0)364166880.