中国物理B ›› 2012, Vol. 21 ›› Issue (10): 100505-100505.doi: 10.1088/1674-1056/21/10/100505

• GENERAL • 上一篇    下一篇

Chaos in a fractional-order micro-electro-mechanical resonator and its suppression

Mohammad Pourmahmood Aghababa   

  1. Electrical Engineering Department, Urmia University of Technology, Urmia, Iran
  • 收稿日期:2012-01-14 修回日期:2012-04-06 出版日期:2012-09-01 发布日期:2012-09-01

Chaos in a fractional-order micro-electro-mechanical resonator and its suppression

Mohammad Pourmahmood Aghababa   

  1. Electrical Engineering Department, Urmia University of Technology, Urmia, Iran
  • Received:2012-01-14 Revised:2012-04-06 Online:2012-09-01 Published:2012-09-01
  • Contact: Mohammad Pourmahmood Aghababa E-mail:m.p.aghababa@ee.uut.ac.ir; m.pour13@gmail.com

摘要: The present paper investigates the existence of chaos in a non-autonomous fractional-order micro-electro-mechanical resonator system (FOMEMRS). Using the maximal Lyapunov exponent criterion, we show that the FOMEMRS exhibits chaos. Strange attractors of the system are plotted to validate its chaotic behavior. Afterward, a novel fractional finite-time controller is introduced to suppress the chaos of the FOMEMRS with model uncertainties and external disturbances in a given finite time. Using the latest version of the fractional Lyapunov theory, the finite time stability and robustness of the proposed scheme are proved. Finally, we present some computer simulations to illustrate the usefulness and applicability of the proposed method.

关键词: micro-electro-mechanical resonator, chaotic behavior, fractional calculus, fractional finite-time controller

Abstract: The present paper investigates the existence of chaos in a non-autonomous fractional-order micro-electro-mechanical resonator system (FOMEMRS). Using the maximal Lyapunov exponent criterion, we show that the FOMEMRS exhibits chaos. Strange attractors of the system are plotted to validate its chaotic behavior. Afterward, a novel fractional finite-time controller is introduced to suppress the chaos of the FOMEMRS with model uncertainties and external disturbances in a given finite time. Using the latest version of the fractional Lyapunov theory, the finite time stability and robustness of the proposed scheme are proved. Finally, we present some computer simulations to illustrate the usefulness and applicability of the proposed method.

Key words: micro-electro-mechanical resonator, chaotic behavior, fractional calculus, fractional finite-time controller

中图分类号:  (Control of chaos, applications of chaos)

  • 05.45.Gg
05.30.Pr (Fractional statistics systems) 85.85.+j (Micro- and nano-electromechanical systems (MEMS/NEMS) and devices) 02.30.Yy (Control theory)