Title: Nonlinear sliding mode control of switched systems on continuously variable transmission shifting

Authors: L. He; L. Li; L.Y. Yu; J. Song

Addresses: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China ' Department of Automotive Engineering, Tsinghua University, Beijing 100084, China ' Department of Automotive Engineering, Tsinghua University, Beijing 100084, China ' State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China

Abstract: The control of speed ratio on Continuously Variable Transmission (CVT) is one of the key problems for CVT development. In this paper, a nonlinear Sliding Mode Control (SMC) law of switched systems is designed and employed to control the CVT shifting. Because the CVT shifting control system contains discontinuous characteristics, the way of Filippov solution with discontinuous righthand side is used to design the sliding mode controller. Through the validation of simulation and on-board experiments, it can be concluded that the nonlinear SMC law is a better candidate to control the CVT shifting.

Keywords: CVT shifting control; continuously variable transmission; SMC; sliding mode control; switched systems; simulation; nonlinear control; shift dynamics; emission performance; fuel economy; vehicle emissions.

DOI: 10.1504/IJVD.2013.052701

International Journal of Vehicle Design, 2013 Vol.62 No.2/3/4, pp.289 - 311

Received: 03 Nov 2010
Accepted: 01 Jun 2011
Published online: 30 Sep 2014 *

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