Design of a model reference controller for a dual-mode power-split hybrid electric vehicle during mode shift

Document Type : Article

Authors

National Key Laboratory of Vehicle Transmission, Beijing Institute of Technology, Beijing 100081, China

Abstract

This paper presents a model reference controller (MRC) of mode shift that intends to decrease the vehicle jerk and the clutch frictional loss for a dual-mode power-split hybrid electric vehicle (HEV). To design a model-based control system in this paper, simplified dynamic equations capturing mode shift dynamics of the dual-mode power-split HEV are derived. To simplify the complicated dynamic characteristics of mode shift, switched system theory is applied to partition the state space of mode shift into domains and facilitate the controller design. To deal with the friction-induced discontinuity of the clutch torque during mode shift, a MRC is proposed that coordinately manages the engine torque, the motor-generator torque and the clutch friction torque. In addition, because the control system is overactuated by three control variables (three torques) and two output variables (two angular speeds), the controller parameter selections that involves selecting the combination of the control variables and the feedback-feedforward parameters are comparatively analyzed. The simulation and the experimental results demonstrate that the proposed MRC in this paper can simultaneously reduce the vehicle jerk and the clutch frictional loss, thereby improving the shift quality, when compared with the conventional controller.

Keywords

Main Subjects


References
1. Liu, J. and Peng, H. \Modeling and control of a power-split hybrid vehicle", IEEE Trans. Control.
Syst. Technol., 16(6), pp. 1242-1251 (2011).
2. Wang, W., Xiang, C., Liu, H. and Jia, S. \A modelpredictive-
control-based power management strategy for a power-split electromechanical transmission",
Proc. Inst. Mech. Eng. Part D J. Automob. Eng., 230(14), pp. 1987-2001 (2016).
3. Xiang, C., Huang, K., Ma, Y., Liu, H. and Jia, S. \Analysis of characteristics for mode switch of
dual-mode electro-mechanical transmission (EMT)", In 2014 IEEE 80th Veh. Technol. Conf., Vancouver,
Canada, pp. 1-6 (2014).

4. Syed, F.U., Kuang, M.L., Czubay, J. and Ying, H.
\Derivation and experimental validation of a powersplit
hybrid electric vehicle model", IEEE Trans. Veh.
Technol., 55(6), pp. 1731-1746 (2006).
5. Kim, J., Kim, T., Min, B., Hwang, S. and Kim, H.
\Mode control strategy for a two-mode hybrid electric
vehicle using electrically variable transmission (EVT)
and xed-gear mode", IEEE Trans. Veh. Technol.,
60(3), pp. 793-803 (2011).
6. Kim, H., Choi, J. and Yi, K. \Development of supervisory
control strategy for optimized fuel consumption
of the compound hybrid excavator", Proc. Inst. Mech.
Eng. Part D J. Automob. Eng., 226(12), pp. 1652-1666
(2012).
7. Yu, H.S., Zhang, J.W. and Zhang, T. \Control strategy
design and experimental research on a four-shaft
electronic continuously variable transmission hybrid
electric vehicle", Proc. Inst. Mech. Eng. Part D J.
Automob. Eng., 226(12), pp. 1594-1612 (2012).
8. Yang, C., Song, J., Li, L., Li, S. and Cao, D. \Economical
launching and accelerating control strategy for a
single-shaft parallel hybrid electric bus", Mech. Syst.
Signal. Process., 76-77, pp. 649-664 (2016).
9. Liang, L.I., You, S. and Yang, C. \Multi-objective
stochastic MPC-based system control architecture for
plug-in hybrid electric buses", IEEE Trans. Industr.
Inform., 63(8), pp. 4752-4763 (2016).
10. Kim, N.D., Kim, J.M. and Kim, H.S. \Control strategy
for a dual-mode electromechanical, in nitely variable
transmission for hybrid electric vehicles", Proc. Inst.
Mech. Eng. Part D J. Automob. Eng., 222(9), pp.
1587-1601 (2008).
11. Kang, J., Choi, W. and Kim, H. \Development of a
control strategy based on the transmission eciency
with mechanical loss for a dual mode power split-type
hybrid electric vehicle", Int. J. Automot. Technol.,
13(5), pp. 825-833 (2012).
12. Mashadi, B. and Emadi, S.A. \Dual-mode power-split
transmission for hybrid electric vehicles", IEEE Trans.
Veh. Technol., 59(7), pp. 3223-3232 (2010).
13. Wu, M.X., Zhang, J.W., Lu, T.L. and Ni, C.S.
\Research on optimal control for dry dual-clutch engagement
during launch", Proc. Inst. Mech. Eng. Part
D J. Automob. Eng., 224(6), pp. 749-763 (2010).
328 C. Xiang and K. Huang/Scientia Iranica, Transactions B: Mechanical Engineering 25 (2018) 311{328
14. Beck, R., Richert, F., Bollig, A., Abel, D., Saenger, S.,
Neil, K., Scholt, T., and Noreikat, K.E. \Model predictive
control of a parallel hybrid vehicle drivetrain", In
Proc. 44th IEEE Conf. Decision Control, Eur. Control
Conf., Seville, Spain, pp. 2670-2675 (2005).
15. Minh, V.T., Hashim, F.M. and Awang, M. \Development
of a real-time clutch transition strategy for a
parallel hybrid electric vehicle", Proc. Inst. Mech. Eng.
Part I J. Syst. and Control. Eng., 226(2), pp. 188-203
(2012).
16. Kim, S., Park, J., Hong, J., Lee, M. and Sim, H.
\Transient control strategy of hybrid electric vehicle
during mode change", SAE Technical Paper (2009).
17. Sanada, K., Gao, B., Kado, N., Takamatsu, H. and
Toriya, K. \Design of a robust controller for shift
control of an automatic transmission", Proc. Inst.
Mech. Eng. Part D J. Automob. Eng., 226(12), pp.
1577-1584 (2012).
18. Gibson, A. and Kolmanovsky, I. \Modeling and analysis
of engine torque modulation for shift quality
improvement", SAE Technical Paper (2006).
19. Hong, S., Choi, W., Ahn, S., Kim, Y. and Kim, H.
\Mode shift control of a dual-mode power-split-type
hybrid electric vehicle", Proc. Inst. Mech. Eng. Part D
J. Automob. Eng., 228(10), pp. 1217-1231 (2014).
20. Alt, B., Antritter, F., Svaricek, F. and Schultalbers,
M. \Multivariable speed synchronisation for a parallel
hybrid electric vehicle drivetrain", Vehicle. Syst. Dyn.,
51(3), pp. 321-337 (2013).
21. Choi, W., Kang, J., Hong, S. and Kim, H. \Development
of a control algorithm to reduce torque variation
for the dual-mode HEV during mode shift", In 2011
IEEE Veh. Power. And Propulsion. Conf., Chicago,
USA, pp. 1-6 (2011).
22. Hong, S., Choi, W., Ahn, S., Kim, Y. and Kim, H.
\Mode shift control of a dual-mode power-split-type
hybrid electric vehicle", Proc. Inst. Mech. Eng. Part D
J. Automob. Eng., 228(10), pp. 1217-1231 (2014).
23. Song, M., Oh, J., Choi, S., Kim, Y. and Kim, H.
\Motor control of a parallel hybrid electric vehicle
during mode change without an integrated starter
generator", J. Electr. Eng. Technol., 8(4), pp. 930-937
(2013).
24. Kum, D., Peng, H. and Bucknor, N.K. \Control of
engine-starts for optimal drivability of parallel hybrid
electric vehicles", J. Dyn. Syst. Meas. Control.,
135(2), 021020 (2013).
25. Koprubasi, K., Westervelt, E.R. and Rizzoni, G. \Toward
the systematic design of controllers for smooth
hybrid electric vehicle mode changes", In Proc. Amer.
Control. Conf., New York, USA, pp. 2985-2990 (2007).
26. Wang, H., Liu, H. and Yang, J.B. \Dynamic analysis
of a two-stage supply chain-a switched system theory
approach", Int. J. Adv. Manuf. Technol., 43(1-2), pp.
200-210 (2009).
27. Zhang, H., Shi, Y. and Mehr, A.S. \Stability and
stabilization in switched discrete-time systems", Int.
J. Adapt. Control. Signal. Process., 26(11), pp. 991-
1012 (2012).
28. Sun, Z. and Ge, S.S. \Analysis and synthesis of
switched linear control systems", Automatica, 41(2),
pp. 181-195 (2005).
29. Amato, F., Robust Control of Linear Systems Subject
to Uncertain Time-Varying Parameters, Berlin, Germany
(2006).
30. Chen, L., Xi, G. and Sun, J. \Torque coordination
control during mode transition for a series-parallel
hybrid electric vehicle", IEEE Trans. Veh. Technol.,
61(7), pp. 2936-2949 (2012).