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Implementation of Torque Hole Filling for Transmission Shift Control
Technical Paper
2018-01-1169
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Torque Hole Filling (THF) is a model based approach for controlling the automatic transmission clutches and input torque during a part-pedal upshift or zero-pedal downshift. A desired transmission output torque is first calculated and then the clutches and input torque are controlled to achieve that output torque. This is a system design approach with drivability as one of the direct design objectives.
This paper presents the control design and implementation of Torque Hole Filling. First, the paper introduces the topic, defines the terms, and explains the basic operation and intended result. Next, it describes how it works with one instance of implementation and its corresponding dynamics equations, for both torque transfer and ratio change phases. Lastly but most importantly, it covers the various robustness considerations for real-world applications.
Authors
- Christopher Teslak - Ford Motor Company
- Eric Tseng - Ford Motor Company
- Stephen Cicala - Ford Motor Company
- Bradley D. Riedle - Ford Motor Company
- Yuji Fujii - Ford Motor Company
- Jianping Zhang - Ford Motor Company
- Chad Griffin - Ford Motor Company
- Joseph Slayton - Ford Motor Company
- Brian O'Neil - Ford Motor Company
Citation
Teslak, C., Tseng, E., Cicala, S., Riedle, B. et al., "Implementation of Torque Hole Filling for Transmission Shift Control," SAE Technical Paper 2018-01-1169, 2018, https://doi.org/10.4271/2018-01-1169.Also In
References
- Hrovat , D. “Coordinated Engine/Transmission Control for Smooth Shifts,” Ford Motor Company Invention Disclosure 1986
- Ford Uses Math Models to Solve Torque Challenges Electronic Design 2011 http://electronicdesign.com/mobile/ford-uses-math-models-solve-torque-challenges-0
- Y. Fujii , M. Kraska , G. Pietron , W. Tobler , W. Ortmann , B. Riedle , R. Cowan , D. Hrovat Ratio Shift Control For A Multiple Ratio Automatic Transmission 2008
- Y. Fujii , M. Kraska , G. Pietron , W. Tobler , W. Ortmann , B. Riedle , R. Cowan , D. Hrovat Ratio Shift Control For A Multiple Ratio Automatic Transmission 2009
- Y. Fujii , J. Asgari , D. Hrovat , H. Jiang , G. Pietron , B. Riedle , C. Teslak , E. Tseng Ratio Shift Control System and Method for a Multiple-Ratio Automatic Transmission 2012
- Y. Fujii , J. Asgari , D. Hrovat , H. Jiang , G. Pietron , B. Riedle , C. Teslak , E. Tseng Multiple-Ratio Automatic Transmission Control Method and System for Ratio Upshifts 2012
- Y. Fujii , J. Asgari , D. Hrovat , H. Jiang , G. Pietron , B. Riedle , C. Teslak , E. Tseng Ratio Shift Control System and Method for a Multiple-Ratio Automatic Transmission 2013
- Y. Fujii , J. Asgari , D. Hrovat , H. Jiang , G. Pietron , B. Riedle , C. Teslak , E. Tseng Multiple-Ratio Automatic Transmission Control Method and System for Ratio Upshifts 2013
- C. Teslak , G. Pietron , E. Tseng , Y. Fujii , M. Fodor , D. Yanakiev , S. Lee Clutch Torque Trajectory Correction to Provide Torque Hole Filling during a Ratio Upshift 2014
- C. Teslak , G. Pietron , E. Tseng , Y. Fujii , M. Fodor , D. Yanakiev , S. Lee Clutch Torque Trajectory Correction to Provide Torque Hole Filling during a Ratio Upshift 2014
- M. Shelton , C. Teslak , E. Dai Torque Hole Filling in a vehicle with a hybrid powertrain 2014
- C. Teslak , G. Pietron , E. Tseng , Y. Fujii , M. Fodor , D. Yanakiev , S. Lee Clutch Torque Trajectory Correction to Provide Torque Hole Filling during a Ratio Upshift (Continuation) 2015
- C. Teslak , G. Pietron , E. Tseng , Y. Fujii , M. Fodor , D. Yanakiev , S. Lee Clutch Torque Trajectory Correction to Provide Torque Hole Filling during a Ratio Upshift 2016