Dither signal effects on quenching chaos of a permanent magnet synchronous motor in electric vehicles

Shun Chang Chang, Bao Chau Lin, Yeou-Feng Lue

Research output: Contribution to journalArticle

22 Citations (Scopus)


This investigation confirms and controls chaotic motion in a permanent magnet synchronous motor (PMSM) system in electric vehicles. Complex nonlinear behaviors may be observed over a range of parameter values in the bifurcation diagram. The method of the Lyapunov exponent is adopted to identify the onset of chaotic motion and verify the analysis. Finally, a technique for effectively controlling a chaotic PMSM system will be offered. It involves applying an external input, called a dither signal, to the system. Some simulation results are presented to demonstrate the feasibility of the developed approach.

Original languageEnglish
Pages (from-to)1912-1918
Number of pages7
JournalJVC/Journal of Vibration and Control
Issue number12
Publication statusPublished - 2011 Oct 1



  • Chaotic motion
  • Lyapunov exponent
  • dither
  • electric vehicles
  • permanent magnet synchronous motor

ASJC Scopus subject areas

  • Automotive Engineering
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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