Chaos control of a shape memory alloy structure using thermal constrained actuation

被引：15

作者：

Costa, Dimitri D. A. ^{[1
]}

Savi, Marcelo A. ^{[1
]}

de Paula, Aline S. ^{[2
]}

Bernardini, Davide ^{[3
]}

机构：

[1] Univ Fed Rio de Janeiro, Ctr Nonlinear Mech, COPPE, Dept Mech Engn, POB 68-503, BR-21941972 Rio De Janeiro, Brazil

[2] Univ Brasilia, Dept Mech Engn, BR-70910000 Brasilia, DF, Brazil

[3] Univ Roma La Sapienza, Dept Struct & Geotech Engn, Via Antonio Gramsci 53, I-00197 Rome, Italy

来源：

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS | 2019年 / 111卷

关键词：

Smart structures; Shape memory alloys; Chaos control; Time-delayed feedback control; DELAYED FEEDBACK-CONTROL; NONLINEAR DYNAMICS; ENERGY;

D O I：

10.1016/j.ijnonlinmec.2019.02.006

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Shape memory alloys (SMAs) have been widely used in smart structures due to their adaptive properties. Their thermomechanical coupling can provide vibration attenuation or actuation providing a desired dynamical response. Chaos control methods can provide the stabilisation of unstable periodic orbits allowing one to choose a convenient response. Besides, it can promote bifurcation control that can avoid undesirable responses. This work investigates the chaos control of smart structures employing time-delayed feedback control to perform orbit stabilisation. A two-bar truss is of concern using thermal actuation of SMA elements. Thermal constraints defined by energy equation are investigated, showing the real possibilities of this kind of control. Numerical results show situations related to controller constraints, defining its range of applicability. Control strategy potentialities are discussed showing unstable periodic orbit stabilisation, exchangeable target control and bifurcation control.

引用

页码：106 / 118

页数：13

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