Combining extremum seeking control and tracking control for high-performance CVT operation

Stan van der Meulen, Bram de Jager, F.E. Veldpaus, M. Steinbuch

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)
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The design of a new controller for the variator in a pushbelt continuously variable transmission (CVT) is investigated. A conventional variator controller is typically based on a variator model with large uncertainties, which results in a limited variator efficiency. The proposed controller simultaneously optimizes the variator efficiency and tracks a transmission ratio reference, for which a detailed variator model is not required. The controller, a combination of extremum seeking control and tracking control, only uses measurements from standard sensors. Experiments on the basis of a driving cycle show that a conventional variator controller is outperformed.
Original languageEnglish
Pages (from-to)86-102
JournalControl Engineering Practice
Early online date16 May 2014
Publication statusPublished - 1 Aug 2014


  • Continuously variable transmission (CVT)
  • Efficiency optimization
  • Extremum seeking control
  • Tracking control
  • System identification
  • Driving cycle experiments


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