Functional Analysis Method for Dynamic Speed Ratio Control of CVT-Based Vehicles

Bo Li, Wei Wu*, Xueyuan Li, Shihua Yuan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Speed ratio control of CVT-based vehicles is critical to vehicle dynamic performance. With vehicle accelerating, transmission efficiency and rolling resistance coefficient vary at real-time. Considering real-time variables into speed ratio control, functional analysis method is proposed. Choosing speed ratios as functional argument, a general functional form of acceleration time is established. The performance index is strongly nonlinear, which makes it difficult to obtain theoretical optimal solutions. So hybrid function of genetic algorithm with fmincon is adopted to obtain the numerical solutions. Continuously variable transmission model is established to compare the dynamic performance in different strategies. The simulation results show that accelerating time of 0–90, km/h decreased by 2.31, s after optimization,realizing the application of Functional Analysis Method on CVT ratio control problems.

Original languageEnglish
Title of host publicationAdvances in Mechanical Design - Proceedings of the 2017 International Conference on Mechanical Design, ICMD 2017
EditorsChangle Xiang, Jianrong Tan, Feng Gao
PublisherSpringer Netherlands
Pages791-804
Number of pages14
ISBN (Print)9789811065521
DOIs
Publication statusPublished - 2018
EventInternational Conference on Mechanical Design, ICMD 2017 - Beijing, China
Duration: 13 Oct 201715 Oct 2017

Publication series

NameMechanisms and Machine Science
Volume55
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

ConferenceInternational Conference on Mechanical Design, ICMD 2017
Country/TerritoryChina
CityBeijing
Period13/10/1715/10/17

Keywords

  • Acceleration performance
  • Functional analysis
  • Genetic algorithm
  • Modeling
  • Speed ratio

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