On the controllers' design to stabilize ground resonance helicopter

dc.contributor.authorIgnácio da Silva, José A. [UNESP]
dc.contributor.authorBueno, Douglas D. [UNESP]
dc.contributor.authorde Abreu, Gustavo L. C. M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-12T01:43:55Z
dc.date.available2020-12-12T01:43:55Z
dc.date.issued2019-12-01
dc.description.abstractGround resonance (GR) in helicopters is a potentially catastrophic instability commonly caused by coalescence of the regressive cyclic blade lag mode with the fuselage motion in certain rotor speed ranges. It can limit the helicopter operational envelope and the design of this type of vehicle can become a difficult task. Although a broad class of actuators allows the use of active and semi-active techniques to design feedback-based control systems, a limited number of works in the literature introduce formulations to compute the controller gain to suppress this phenomenon. Also, commonly, a control approach defines a feedback, particularly to a specific rotor speed. In this context, this work introduces an alternative methodology to design an active control system to stabilize GR of a helicopter. The proposed approach can suppress this instability in all rotor speed ranges by using only one control gain. Two strategies are proposed based on linear matrix inequalities (LMIs). The Lyapunov stability criteria are used and the unstable rotor speed is considered as an uncertain parameter to define an associated convex space. Using convex optimization, a robust control gain is computed until all the unstable rotor speed range is stabilized. Numerical simulations are carried out to demonstrate the effectiveness of this methodology. The results confirm the viability of the proposed approach to design active and semi-active controllers.en
dc.description.affiliationDepartment of Mechanical Engineering São Paulo State University (UNESP) Faculty of Engineering of Ilha Solteira
dc.description.affiliationDepartment of Mathematics São Paulo State University (UNESP) Faculty of Engineering of Ilha Solteira
dc.description.affiliationUnespDepartment of Mechanical Engineering São Paulo State University (UNESP) Faculty of Engineering of Ilha Solteira
dc.description.affiliationUnespDepartment of Mathematics São Paulo State University (UNESP) Faculty of Engineering of Ilha Solteira
dc.format.extent2894-2909
dc.identifierhttp://dx.doi.org/10.1177/1077546319873797
dc.identifier.citationJVC/Journal of Vibration and Control, v. 25, n. 23-24, p. 2894-2909, 2019.
dc.identifier.doi10.1177/1077546319873797
dc.identifier.issn1741-2986
dc.identifier.issn1077-5463
dc.identifier.scopus2-s2.0-85074300692
dc.identifier.urihttp://hdl.handle.net/11449/199585
dc.language.isoeng
dc.relation.ispartofJVC/Journal of Vibration and Control
dc.sourceScopus
dc.subjectcontroller design
dc.subjectGround resonance helicopter
dc.subjectlinear matrix inequalities
dc.subjectrobust control gain
dc.subjectrotor speed range stabilization
dc.titleOn the controllers' design to stabilize ground resonance helicopteren
dc.typeArtigo
unesp.author.orcid0000-0001-6960-250X[1]

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