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Adaptive strategy for the automatic transmission shifting improvement

  • Dai Zhenkun
  • , Dong Peng*
  • , Guo Wei
  • *Corresponding author for this work
  • Shengrui Transmission Corporation Limited

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

Abstract

Shift quality and shift time of the automatic transmission is required to be consistent in mass production and with mileage accumulation. In order to compensate for the influence of build-to-build variations and life-cycle variations on shifting process, there should be an adaptive control in the software in addition to the base control of the shifting process. The adaptive control can adjust control parameters to compensate for the variations of physical characteristics. Thus shift quality will be improved step by step through the learning process. Some adaptive control methods are proposed in this paper. In torque phase, the adaptive strategy tries to keep the clutch slip in a small range to avoid clutch tie-up and engine flare. In inertia phase, the adaptive strategy tries to keep the time of the speed synchronization process in a proper range to avoid a long shifting time or a shifting impact. Vehicle tests verified that this adaptive control strategy can effectively eliminate the engine flare, and the clutch tie-up in power on up shift and to get a better shift quality and proper shift time.

Original languageEnglish
Title of host publicationProceedings of the 29th Chinese Control and Decision Conference, CCDC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages585-589
Number of pages5
ISBN (Electronic)9781509046560
DOIs
StatePublished - 12 Jul 2017
Event29th Chinese Control and Decision Conference, CCDC 2017 - Chongqing, China
Duration: 28 May 201730 May 2017

Publication series

NameProceedings of the 29th Chinese Control and Decision Conference, CCDC 2017

Conference

Conference29th Chinese Control and Decision Conference, CCDC 2017
Country/TerritoryChina
CityChongqing
Period28/05/1730/05/17

Keywords

  • Adaptive control
  • Automatic transmission
  • Power on up shift

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