Show simple item record

dc.contributor.authorBalthazar, Jose Manoel [UNESP]
dc.contributor.authorTusset, Angelo Marcelo
dc.contributor.authorBueno, Atila Madureira [UNESP]
dc.identifier.citationJournal of Theoretical and Applied Mechanics. Warszawa: Polish Soc Theoretical & Applied Mechanics, v. 52, n. 1, p. 93-106, 2014.
dc.description.abstractNonlinear motion of the microcantilever probe in the Atomic Force Microscope (AFM) has been extensively studied considering mainly the van der Waals forces. Since the behavior of the microcantilever is vital to quality of generated images, the study of control strategies that force the probe to avoid undesired behavior such as chaotic motion, is also of significant importance. A number of published works has shown that the microcantilever is subject to chaotic motion for a certain combination of parameters. For such a parameter combination, the control system must suppress the chaotic motion. Here, an study of the AFM mathematical model is presented, aiming to find a region of operation of the AFM where the motion is chaotic. In order to suppress the chaotic motion, a periodic orbit of the system is obtained, and the controller forces the system to that periodic orbit. Two control strategies are used, namely: The State Dependent Riccati Equation (SDRE) and the Optimal Linear Feedback Control (OLFC). Both control strategies consider the complete nonlinearities of the system, and the OLFC guarantees the global stability. The numerical simulations carried out showed the efficiency of the control methods as well as the sensitivity of each control strategy to parametric errors. Without the parametric errors, both control strategies were effective in maintaining the system into the desired orbit. On the other hand, in the presence of parametric errors, the SDRE technique was more robust than the OLFC.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.publisherPolish Soc Theoretical & Applied Mechanics
dc.relation.ispartofJournal of Theoretical and Applied Mechanics
dc.sourceWeb of Science
dc.subjectSDRE controlen
dc.subjectoptimal linear feedback controlen
dc.titleTm-afm nonlinear motion control with robustness analysis to parametric errors in the control signal determinationen
dcterms.rightsHolderPolish Soc Theoretical & Applied Mechanics
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Tecnol Fed Parana UTFPR
dc.description.affiliationUniv Estadual Paulista, UNESP, Rio Claro, SP, Brazil
dc.description.affiliationUniv Tecnol Fed Parana UTFPR, Ponta Grossa, PR, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, Sorocaba, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Sorocaba, SP, Brazil
dc.rights.accessRightsAcesso restrito
dc.description.sponsorshipIdFAPESP: 13/04101-6
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, Sorocabapt
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt[3][3][1]
Localize o texto completo

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record