吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 1247-1252.doi: 10.7964/jdxbgxb201405004

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Key technology of the electric-hydraulic system for continuous variable transmission

HAN Ling1, ZHANG Lin-bin1, AN Ying2, LI Chun-rong3,Sohel Anwar4   

  1. 1.College of Transportation, Jilin University, Changchun 130022, China;
    2.College of Automotive Engineering, Hu'
    nan University, Changsha 410000, China;
    3.College of Mechanical Engineering, Jilin Agriculture University, Changchun 130000, China ;
    4.College of Mechanical Engineering, Purdue University, Indiana 46202, USA
  • Received:2013-09-22 Online:2014-09-01 Published:2014-09-01

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Abstract:

The control consistency of Drive-Neutral-Reverse (DNR) clutch in the software development of the electric-hydraulic control system of Continuous Variable Transmission (CVT) is analyzed. The parameter diversity, uncertainty, and time-varying introduce difficulties to the open-loop control of DNR clutch. Regarding the filling time and the slipping process, a self-learning method is proposed, which takes the smooth turbine acceleration as the target. The learning rule is derived from the Lyapunov argument. The asymptotic convergence of the self-learning process is theoretically proved. To verify the effectiveness of the learning control algorithm in practical application, the control algorithm modeling is set up in the ETAS software, and the control algorithm is tested using rapid prototype simulation on real vehicle. The test results indicate that application effect of the control method is good.

Key words: vehicle engineering, continuously variable transmission(CVT), electric-hydraulic control system, DNR clutch

CLC Number: 

  • U472.9
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