Self-adaptive control with hysteresis compensation on ultra-precision pneumatic servo stage

Yanbing Tian, Tao Wang, Liu Jun, Han Sen

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

Abstract

In this paper, one new type positioning stage is designed to improve the stroke and accuracy of ultra-precision positioning stage. The pneumatic metal bellows are used as a driving part, and the moving platform is supported with air guide sliders to realize larger stroke and ultra precision positioning with frictionless. The dynamic model of the system and the hysteresis model on the basis of PI model are provided and the corresponding parameters of PI model are optimized and identified according to the initial loading curve. Additionally, the self-adaptive controller with hysteresis compensation is designed to improve the dynamic characteristics of the system and the corresponding PID parameters are optimized according to the reference model. The experimental results with sawtooth signal and multiple frequency signals on the positioning stage show that, in the presence of the self-adaptive controller with hysteresis compensation, the maximum tracking error is 1.57μm and the average error is 0.77μm on sawtooth signal, while the maximum error is 0.92μm and the average error is 0.58μm on multiple frequency signal, so the proposed method can achieve high performance of the ultra-precision positioning.

Original languageEnglish
Title of host publicationProceedings of the 34th Chinese Control Conference, CCC 2015
EditorsQianchuan Zhao, Shirong Liu
PublisherIEEE Computer Society
Pages4319-4324
Number of pages6
ISBN (Electronic)9789881563897
DOIs
Publication statusPublished - 11 Sept 2015
Event34th Chinese Control Conference, CCC 2015 - Hangzhou, China
Duration: 28 Jul 201530 Jul 2015

Publication series

NameChinese Control Conference, CCC
Volume2015-September
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927

Conference

Conference34th Chinese Control Conference, CCC 2015
Country/TerritoryChina
CityHangzhou
Period28/07/1530/07/15

Keywords

  • Bellows
  • Hysteresis
  • Self-adaptive
  • Ultra-precision

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