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Dynamic analysis and control strategy of wet clutches during torque phase of gear shift

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Abstract

Control over the clutch during gear shift is the key technique in automatic transmission shift control and this control largely decides the shift quality. The engagement of the on-coming clutch and the disengagement of the off-going clutch should be controlled synchronously and accurately to achieve a smooth shift. Optimal control of clutch torque exchange phase is required to achieve this synchronous and accurate control. Shift quality can be easily influenced with inappropriate control parameters because of the many factors that affect the torque phase, as well as the use of closed-loop control. In this study, a dynamic model of frictional clutch with electro-hydraulic shift control is built. On the basis of the study of the influence of clutch-related parameters, an optimal control model is proposed with the closed-loop control together with an adaptive control method based on micro-slip clutch control. This control method can continually self-adjust control parameters to prevent shock, improve control precision and effectively reduce the calibration work after. Test result shows that this closed loop with adaptive method ensures consistently good shift quality.

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References

  1. J. E. Marano and S. P. Moorman, Clutch-to-clutch transmission control strategy, SAE TECHNICAL PAPER SERIES (2007) 2007–01-1313.

    Google Scholar 

  2. D. Zhenkun, Research on the key technologies of wet clutch of automatic transmission, A Dissertation Submitted for the Degree of Doctor of Philosophy, Beijing, China (2012).

    Google Scholar 

  3. Y. Liu et al., Shift control strategy and experimental validation for dry dual clutch transmissions, Mechanism and Machine Theory, 75 (2014) 41–53.

    Article  Google Scholar 

  4. P. D. Walker, N. Zhang and R. Tamba, Control of gear shifts in dual clutch transmission powertrains, Mechanical Systems and Signal Processing, 25 6 (2011) 1923–1936.

    Article  Google Scholar 

  5. P. Dong, Y. Liu, Y. Liu and X. Xu, A method of applying two-pump system in automatic transmissions for energy conservation, Advances in Mechanical Engineering, 7 7 (2015) 1–11.

    Article  MathSciNet  Google Scholar 

  6. W. Han and S. J. Yi, A study of shift control using the clutch pressure pattern in automatic transmission, Proc. Inst. Mech. Eng., Part D (J. Automob. Eng.), 217 4 (2013) 289–298.

    Article  Google Scholar 

  7. Y. Cheng, P. Dong, S. Yang and X. Xu, Virtual clutch controller for clutch-to-clutch shifts in planetary-type automatic transmission, Mathematical Problems in Engineering, 2015 (2015) 213162.

    Google Scholar 

  8. A. Visioli, A new design for a PID plus feed forward controller, Journal of Process Control, 14 1 (2004) 455–461.

    Google Scholar 

  9. J. Deur and J. Petric, Modeling of wet clutch engagement including a thorough experimental validation, Croatia: Internal Memorandum (2001).

  10. D. Karnopp, Computer simulation of stick-slip friction in mechanical dynamic systems, ASME J. Dyn. Syst., Meas., Control, 107 1 (1985) 100–103.

    Google Scholar 

  11. M. K. Zavarehi and D. Peter, Nonlinear Modeling and validation of solenoid-controlled pilot-operated servovalves, IEEE/ASME Transactions on Mechatronics, 4 3 (1999) 324–334.

    Article  Google Scholar 

  12. B. Luo, S. Liu and Y. Mo, Automatic clutch control strategy research based on multi-mode control, ICSAI, 10.1109 (2012) 6223161.

    Google Scholar 

  13. S. Bai, J. Maguire and H. Peng, Dynamic Analysis and control system design of automatic transmission, SAE (2013) R–413.

    Google Scholar 

  14. E. J. Berger, F. Sadeghi and C. M. Krousgrill, Analytical and numerical modeling of engagement of rough, permeable, grooved wet clutches, ASME Journal of Tribology, 119 (1997) 143–148.

    Article  Google Scholar 

  15. J. Deur et al., Modeling of wet clutch engagement including a thorough experimental validation, SAE Transmissions and Drivelines Symposium, Troy: SAE (2005) 2005-01-0877.

    Google Scholar 

  16. Y. Yang, R. C. Lam, Y. F. Chen and H. Yabe, Modeling of heat transfer and fluid hydrodynamics for a multidisc wet clutch, SAE (1995) 950898.

    Google Scholar 

  17. E. J. Berger, F. Sadeghi and C. M. Krousgrill, Analytical and numerical modeling of engagement of rough, permeable, grooved wet clutches, ASME Journal of Tribology, 119 1 (1997) 143–148.

    Article  Google Scholar 

  18. Y. Yang, R. C. Lam and T. Fujji, Prediction of torque response during the engagement of wet friction clutch, SAE (1998) 981097.

    Google Scholar 

  19. W. Guo, Y. Liu, J. Zhang and X. Xu, Dynamic analysis and control of the clutch filling process in clutch-to-clutch transmissions, Mathematical Problems in Engineering, 2014 (2014) 293637.

    Google Scholar 

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Authors and Affiliations

  1. School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China

    Yanxiao Fu, Yanfang Liu, Liangyi Cui & Xiangyang Xu

Authors
  1. Yanxiao Fu
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  2. Yanfang Liu
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  3. Liangyi Cui
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  4. Xiangyang Xu
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Corresponding author

Correspondence to Yanfang Liu.

Additional information

Yanxiao Fu received her bachelor’s degree in Traffic Engineering from Beihang University in 2010. At present, she is a Ph.D. candidate in Beihang University. Her research interests include dynamic design and control of automatic transmission.

Yanfang Liu received her Ph.D. in Mechanical Engineering from Beihang University in 2006. Her research interests include dynamic design and control of automobile transmission, NVH of gear structures, multidisciplinary dynamics and fluid-structure coupling.

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Fu, Y., Liu, Y., Cui, L. et al. Dynamic analysis and control strategy of wet clutches during torque phase of gear shift. J Mech Sci Technol 30, 1479–1496 (2016). https://doi.org/10.1007/s12206-016-0302-7

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  • DOI: https://doi.org/10.1007/s12206-016-0302-7

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