Clutch fill control is critical for automotive transmission performance and fuel economy, including both automatic and hybrid transmissions. The traditional approach, by which the clutch fill pressure command is manually calibrated, has a couple of limitations. First, the pressure profile is not optimized to reduce the peak clutch fill flow demand. Moreover, it is not systematically designed to account for uncertainties in the system, such as variations of solenoid valve time delay and parameters of the clutch assembly. In this paper, we present a systematic approach to evaluate the clutch fill dynamics and synthesize the optimal pressure profile. First, a clutch fill dynamic model is constructed and analyzed. Second, the applicability of the conventional numerical Dynamic Programming (DP) algorithm to the clutch fill control problem is explored and shown to be ineffective. Thus we developed a new customized DP method to obtain the optimal and robust pressure profile subject to specified constraints. After a series of simulations and case studies, the new customized DP approach is demonstrated to be effective, efficient, and robust for solving the clutch fill optimal control problem.
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ASME 2008 Dynamic Systems and Control Conference
October 20–22, 2008
Ann Arbor, Michigan, USA
Conference Sponsors:
- Dynamic Systems and Control Division
ISBN:
978-0-7918-4335-2
PROCEEDINGS PAPER
Transmission Clutch Fill Control Using a Customized Dynamic Programming Method Available to Purchase
Xingyong Song,
Xingyong Song
University of Minnesota, Minneapolis, MN
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Mohd Azrin Mohd Zulkefli,
Mohd Azrin Mohd Zulkefli
University of Minnesota, Minneapolis, MN
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Zongxuan Sun,
Zongxuan Sun
University of Minnesota, Minneapolis, MN
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Hsu-Chiang Miao
Hsu-Chiang Miao
General Motors Corporation, Warren, MI
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Xingyong Song
University of Minnesota, Minneapolis, MN
Mohd Azrin Mohd Zulkefli
University of Minnesota, Minneapolis, MN
Zongxuan Sun
University of Minnesota, Minneapolis, MN
Hsu-Chiang Miao
General Motors Corporation, Warren, MI
Paper No:
DSCC2008-2166, pp. 463-470; 8 pages
Published Online:
June 29, 2009
Citation
Song, X, Mohd Zulkefli, MA, Sun, Z, & Miao, H. "Transmission Clutch Fill Control Using a Customized Dynamic Programming Method." Proceedings of the ASME 2008 Dynamic Systems and Control Conference. ASME 2008 Dynamic Systems and Control Conference, Parts A and B. Ann Arbor, Michigan, USA. October 20–22, 2008. pp. 463-470. ASME. https://doi.org/10.1115/DSCC2008-2166
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