Nonlinear stabilization of slip in a continuously variable transmission

T.W.G.L. Klaassen, B. Bonsen, K.G.O. Meerakker, van de, M. Steinbuch, P.A. Veenhuizen, F.E. Veldpaus

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

11 Citations (Scopus)
1 Downloads (Pure)


One way to predict and control the output torque of a geared neutral CVT is to use the relationship between slip in the variator and transmitted belt torque. This relationship is often referred to as the traction curve. For small slip values, the output torque increases almost linearly with slip. However, at approximately 2% slip, the maximum output torque is reached. For larger slip values, the output torque shows even a decline. Hence, measuring the traction curve in open loop is not possible. Stability analysis shows that by modifying the plant with a nonlinear feedback control torque depending on the slip, a stable closed loop plant with two new defined inputs is obtained. An open loop input torque at this plant now uniquely defines the slip in the system. The primary shaft angular velocity is controlled using a robust stabilizing controller. This controller is tuned using measured frequency response functions at different slip values
Original languageEnglish
Title of host publicationProceedings of the 2004 IEEE international conference on control applications : September 2-4, 2004, Taipei, Taiwan
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)0-7803-8633-7
Publication statusPublished - 2004


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