Proposal of position reconstruction with polynomial fitting approach for precise motion control

Hongzhong Zhu, Hiroshi Fujimoto, Toshiharu Sugie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Optical encoders are extensively used for position measurements in motion control systems. The inherent quantization feature of encoders limits the control performance in many applications. This paper shows a way to reconstruct the smooth position signal from the quantized measurements. The method uses a polynomial fitting approach where the degree of polynomial is automatically selected via a convex optimization method. In addition, the information of the plant is exploited by combining an observer. The effectiveness of the proposed method is verified by simulations and experiments using a high-precision linear stage.

Original languageEnglish
Title of host publication6th IFAC Symposium on Mechatronic Systems, MECH 2013
PublisherIFAC Secretariat
Pages231-236
Number of pages6
Edition5
ISBN (Print)9783902823311
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event6th IFAC Symposium on Mechatronic Systems, MECH 2013 - Hangzhou, China
Duration: Apr 10 2013Apr 12 2013

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
Number5
Volume46
ISSN (Print)1474-6670

Conference

Conference6th IFAC Symposium on Mechatronic Systems, MECH 2013
CountryChina
CityHangzhou
Period4/10/134/12/13

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

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