Posted in | News

Suitable for all Piezo Actuator Nanopositioning Systems: The All-Rounder Among the Digital Controllers

Piezo-based nanopositioning systems are known for their high precision. However, this is not self-evident since the motion characteristics of piezo actuators are by no means linear. This must be compensated by suitable control.

In this case, digital controllers are usually the best choice, especially since high-performance devices are now available on the market that do not cost any more than an analog controller. They are just as fast, but at the same time, they offer advanced servo algorithms. An example of this is the new E-727 three-channel digital controller from PI (Physik Instrumente).

The high-resolution AD/DA converter and piezo amplifier can be considered as a genuine "People's Controller" for all piezo actuator nanopositioning systems, irrespective of whether these work with capacitive, piezo-resistive or strain sensors.

A PI controller with two notch filters optimized for piezo operation allows a high control bandwidth (25 kHz). Intelligent servo algorithms minimize the settling times, which allows repeatability into the subnanometer range. Further highlights of the digital controller include 4th order polynomial linearization for the mechanics and electronics, an integrated data recorder, an ID chip for fast start-up and quick exchange of the system components as well as subordinate, programmable drift compensation.

In addition, there is the option of dynamic digital linearization. This DDL function lowers phase shift and trajectory errors in the case of dynamic-periodic applications to an indiscernible level.

This is particularly important for scanning applications, where a specific position needs to be identified and then approached with high precision. The piezo controller is commanded via the digital SPI, USB and RS-232 interfaces. In addition, there are four respective analog inputs and outputs for set-point values, sensor signals or external amplifier as well as four respective digital inputs and outputs. The extensive software package also includes drivers for LabVIEW as well as libraries for Windows and Linux.

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    PI (Physik Instrumente) LP. (2019, February 11). Suitable for all Piezo Actuator Nanopositioning Systems: The All-Rounder Among the Digital Controllers. AZoNano. Retrieved on October 14, 2024 from https://www.azonano.com/news.aspx?newsID=34169.

  • MLA

    PI (Physik Instrumente) LP. "Suitable for all Piezo Actuator Nanopositioning Systems: The All-Rounder Among the Digital Controllers". AZoNano. 14 October 2024. <https://www.azonano.com/news.aspx?newsID=34169>.

  • Chicago

    PI (Physik Instrumente) LP. "Suitable for all Piezo Actuator Nanopositioning Systems: The All-Rounder Among the Digital Controllers". AZoNano. https://www.azonano.com/news.aspx?newsID=34169. (accessed October 14, 2024).

  • Harvard

    PI (Physik Instrumente) LP. 2019. Suitable for all Piezo Actuator Nanopositioning Systems: The All-Rounder Among the Digital Controllers. AZoNano, viewed 14 October 2024, https://www.azonano.com/news.aspx?newsID=34169.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type
Submit

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.