Flatness-based approach for the manipulation of a microscopic particle by optical tweezers

Carlos Aguilar-Ibañez, Armando Barrañón Cedillo, Hebertt Sira-Ramirez, Luis I. Rosas-Soriano

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Based on the fact that optical tweezers (OT) constitute a flat system, with flat outputs given by the horizontal and vertical position coordinates of the geometric centre of the laser beam, a flatness-based control strategy for the manipulation of a microscopical particle is presented in this article. The control strategy is derived under the assumption that the particle is suspended in a frictionless medium, obtaining a simple controller with a relatively simple stability analysis. The control strategy is tested by tracking a straight line, an elliptic curve, and carrying out the rest-to-rest transfer manoeuvre task by using a smooth trajectory.

Original languageEnglish
Pages (from-to)2026-2033
Number of pages8
JournalInternational Journal of Control
Volume82
Issue number11
DOIs
StatePublished - 2009

Keywords

  • Flatness-based control
  • Numerical simulation
  • Optical tweezers
  • Saturation function
  • Velocity observers

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