Design of a fractional-order integrator for high-precision stages

J. van der Weijde, M.F. Heertjes

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Downloads (Pure)

Abstract

To provide more tuning freedom in the trade-off between overshoot and settling times of PID controlled stages, a PID controller with a fractional order integrator is studied. The fractional order integrator has two parameters dependent on the order ¿. Namely, the corner frequency ¿i(¿) and the gain kp(¿). Both parameters are designed such that robust stability is maintained independent on the choice of ¿. It will be shown that the fractional order integrator can be approximated by a low-order loop shaping filter. As such, insights from fractional order control can be used by the control engineer to aid his tuning tasks. The controller is tested on a wafer stage system.
Original languageEnglish
Title of host publicationProceedings of the American Control Conference (ACC 2014), 4-6 june 2014, Portland, Oregon, United States.
Place of PublicationPortland, OR
PublisherInstitute of Electrical and Electronics Engineers
Pages978-983
DOIs
Publication statusPublished - 2014
Event2014 American Control Conference (ACC 2014), June 4-6, 2014, Portland, OR, USA - Hilton Portland & Executive Tower , Portland, OR, United States
Duration: 4 Jun 20146 Jun 2014
http://acc2014.a2c2.org/

Conference

Conference2014 American Control Conference (ACC 2014), June 4-6, 2014, Portland, OR, USA
Abbreviated titleACC 2014
Country/TerritoryUnited States
CityPortland, OR
Period4/06/146/06/14
Internet address

Fingerprint

Dive into the research topics of 'Design of a fractional-order integrator for high-precision stages'. Together they form a unique fingerprint.

Cite this