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Shift Quality Optimization Based on Assessment System for Dual Clutch Transmission
Technical Paper
2012-01-0060
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The shift quality is one of the most important factors that affect the vehicle performances of comfort, ride and drivability for vehicles equipped with dual clutch transmission (DCT). Assessing the shift quality first and then optimizing shift control strategy and algorithm by the guidance of assessment results to improve the vehicle performance is a useful idea for the development of DCT and other types of automatic transmissions. This paper defines the shift quality assessment criteria in detail for DCT from the control point of view. A shift quality assessment system and a DCT vehicle model used for validation of assessment system are built with MATLAB/Simulink tools. Through the co-simulation of DCT vehicle model and assessment system, the shift quality control objectives, namely the expected control range of each assessment criterion, are determined, which provide reference and guidance for the optimization of DCT shift control. The highest level of shift quality assessment is selected as the objective optimization function and the multi-objective genetic algorithm (MGA) is used to optimize the control strategy of clutch switch timing during the torque phase and inertia phase. The assessment results before and after the optimizations are observed through the simulation. The simulation results verify the correctness and effectiveness of the shift control strategy after optimization, and thereby the shift quality of DCT proves improved.
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Liu, H., Lei, Y., Zhang, J., Qiu, J. et al., "Shift Quality Optimization Based on Assessment System for Dual Clutch Transmission," SAE Technical Paper 2012-01-0060, 2012, https://doi.org/10.4271/2012-01-0060.Also In
References
- Matthes, B. “Double Clutch Transmissions - Lessons Learned and Future Potential,” SAE Technical Paper 2005-01-1021 2005 10.4271/2005-01-1021
- Abel, A. Schreiber, U. Schindler, J. “Engine and Gearbox Modeling and Simulation for Improving the Shifting Behavior of Powertrains with Manual or Automated Transmission,” SAE Technical Paper 2006-01-1641 2006 10.4271/2006-01-1641
- Song, X. Liu, J. Smedley, D. “Simulation Study of Double Clutch Transmission for Medium Duty Truck Applications,” SAE Technical Paper 2005-01-3590 2005 10.4271/2005-01-3590
- Jian, W. Konghui, G. Yulong, L. Hua, T. “Support Vector Machine Theory Based Shift Quality Assessment for Automated Mechanical Transmission (AMT),” SAE Technical Paper 2007-01-1588 2007 10.4271/2007-01-1588
- Zhang, Jianguo Lei, Yulong Zong, Changfu Liu, Hongbo Hu, Tinghui Shift Quality Assessment System Based on Neural Network for DCT Vehicles Sixth International Conference on Natural Computation (ICNC 2010) 4267 4271
- Anlin, Ge Theory and Design of Vehicle Automatic Drive Beijing China Machine Press 1993
- Tong, Xin Shift Schedule and Simulation of Automatic Transmission Changchun college of automotive engineering, Jilin university 2009
- MORTEZA, M G AMIR, P Application of genetic algorithm for optimization of control strategy in parallel hybrid electric vehicles Journal of the Franklin Institute 2006 420 435