Adaptive control of the nonlinear dynamic behavior of the cantilever-sample system of an atomic force microscope

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschungbegutachtet

Authors

The paper presents a model reference adaptive control (MRAC) of first and second order to control the nonlinear dynamics of an atomic force microscope (AFM) cantilever, which is operated in contact mode. The AFM is a powerful tool to measure the topography of a sample at the scale of a few nanometers, where a small sharp tip supported in a micro cantilever scans the surface. In the contact mode the sample's topography is obtained by using the closed-loop control that holds the tip sample force constant. The nonlinear dynamics of the tip-sample system is very complex with different kinds of nonlinear forces that act between the tip and the sample. Here the dominated force depends on the distance tip-sample. In the present work we use a modified Hertz model to describe the nonlinear force when the distance tip-sample is less than 1 nm. First the complex nonlinear tip-sample system is controlled with a nonlinear MRAC of 1st order and after with a nonlinear MRAC of 2nd order. The results of both control strategies were compared in order to see which one gives a better control perfomance. Here a stability proof for both MRAC methods is present. A variety of simulation results are presented to demonstrate the efficacy of the proposed methods. The procedure is general and can be applied to any nonlinear system.

OriginalspracheEnglisch
Titel2016 IEEE International Conference on Automatica, ICA-ACCA 2016
Anzahl der Seiten6
VerlagIEEE - Institute of Electrical and Electronics Engineers Inc.
Erscheinungsdatum08.12.2016
Seiten247 - 252
Aufsatznummer7778435
ISBN (elektronisch)978-150901147-6
DOIs
PublikationsstatusErschienen - 08.12.2016
VeranstaltungIEEE International Conference on Automatica - ICA/ACCA 2016 - University of Talca, Curicó, Chile
Dauer: 19.10.201621.10.2016
Konferenznummer: 22
https://acca.aconf.org/

DOI

Zuletzt angesehen

Publikationen

  1. Saving (in) a common world
  2. 8th challenge on question answering over linked data (QALD-8)
  3. Detection of oscillations with application in the pantograph control
  4. Multi-Professional Support
  5. Use of design methods, team leaders' goal orientation, and team effectiveness: A follow-up study in software development projects
  6. Foreword to applied data science, demo, and nectar tracks
  7. Multiple
  8. Performance of methods to select landscape metrics for modelling species richness
  9. “Circuits of Commons”: Exploring the Connections Between Economic Lives and the Commons
  10. FaQuAD
  11. Recurring patterns and blueprints of industrial symbioses as structural units for an it tool
  12. Simon Denny
  13. Disentangling trade-offs and synergies around ecosystem services with the influence network framework
  14. New developments in extrusion of profiles with variable curvatures and cross-sections
  15. Development and application of a simplified sampling method for volatile polyfluorinated alkyl substances in indoor and environmental air
  16. Robust Decoupling Control of Contact Forces in Robotic Manipulation
  17. Pathways and mechanisms for catalyzing social impact through Orchestration: Insights from an open social innovation project
  18. Hands in Focus: Sign Language Recognition Via Top-Down Attention
  19. Biodiversity and ecosystem functioning relations in European forests depend on environmental context.
  20. Embracing scale-dependence to achieve a deeper understanding of biodiversity and its change across communities
  21. Combination of a reduced order state observer and an Extended Kalman Filter for Peltier cells
  22. Numerical Investigation of the Effect of Rolling on the Localized Stress and Strain Induction for Wire + Arc Additive Manufactured Structures
  23. Do we fail to exert self-control because we lack resources or motivation? Competing theories to explain a debated phenomenon
  24. What do people do when they use the internet?
  25. Machine Learning and Data Mining for Sports Analytics
  26. Collaborative modelling for active involvement of stakeholders in urban flood risk management
  27. Environmental Shareholder Value Matrix
  28. Online-Beratung für Eltern
  29. Navigating tensions in inclusive conservation