Nonlinear observer for real-time attitude estimation

W. F. Guerrero-Sánchez, J. F. Guerrero-Castellanos, R. Juárez-Salazar, B. B. Salmerón-Quiroz

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

Abstract

This paper deals with the attitude estimation of a rigid body equipped with a module of GAM sensors (rate gyros, accelerometers and magnetometers). A quaternion-based nonlinear observer is proposed in order to fuse all information sources and to obtain an accurate estimation of the attitude. It is shown that the error dynamics can break up into two passive subsystems connected in "feedback". This property is a first and crucial result that could be used to show that the error dynamics is input-to-state stable (ISS) when the measurement disturbance is seen as an input and the error state as the state. The effectiveness of the observer is confirmed in a real-time application.

Original languageEnglish
Title of host publication2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009
PublisherIEEE Computer Society
ISBN (Print)9781424446896
DOIs
StatePublished - 2009
Externally publishedYes
Event2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009 - Toluca, Mexico
Duration: 10 Nov 200913 Nov 2009

Publication series

Name2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009

Conference

Conference2009 6th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2009
Country/TerritoryMexico
CityToluca
Period10/11/0913/11/09

Keywords

  • Aerial robotics
  • Attitude
  • MEMS sensors
  • Nonlinear observer
  • SVD

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