Research on coordinated control strategy for the engine starting of electro-mechanical transmission

Haitao Zhang, Lijin Han, Hui Liu

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

Abstract

During the switching process from pure electric driving mode to hybrid mode of dual-mode Electro-Mechanical Transmission (EMT) system, the engine needs to be started by the motors. A coordinated control strategy is proposed in order to solve the longitudinal jerk problem of vehicle caused by this switching process. Firstly, the dynamics analysis of the EMT system is presented by using the Lagrange method. Secondly, the switching process is divided into three stages: motor speed regulation and clutch engagement, engine starting process and engine active speed regulation to the transition speed of hybrid mode. In the second stage, optimal control theory is used to find a near optimal motor torque trajectory in order to smooth the engine starting process. The simulation results indicate that the coordinated control strategy can realize smooth and fast mode switching process with EMT system and the longitudinal jerk of vehicle can be effectively suppressed.

Original languageEnglish
Title of host publicationInternational Conference on Power Transmissions, ICPT 2016
EditorsDatong Qin, Yimin Shao
PublisherCRC Press/Balkema
Pages709-716
Number of pages8
ISBN (Print)9781138032675
DOIs
Publication statusPublished - 2016
EventInternational Conference on Power Transmissions, ICPT 2016 - Chongqing, China
Duration: 27 Oct 201630 Oct 2016

Publication series

NamePower Transmissions - Proceedings of the International Conference on Power Transmissions, ICPT 2016
Volume0

Conference

ConferenceInternational Conference on Power Transmissions, ICPT 2016
Country/TerritoryChina
CityChongqing
Period27/10/1630/10/16

Keywords

  • Coordinated control strategy
  • Electro-mechanical transmission system
  • Mode transition
  • Optimal control

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