Research Papers

Design and Development of a Real-Time Simulation and Testing Platform for a Novel Seamless Two-Speed Transmission for Electric Vehicles1

[+] Author and Article Information
Truong Sinh Nguyen

The State Key Laboratory of
Automotive Safety and Energy,
Tsinghua University,
Beijing 100084, China
e-mail: ntsinhtb11@gmail.com

Jian Song

The State Key Laboratory of
Automotive Safety and Energy,
Tsinghua University,
Beijing 100084, China
e-mail: daesj@tsinghua.edu.cn

Liangyao Yu

The State Key Laboratory of
Automotive Safety and Energy,
Tsinghua University,
Beijing 100084, China
e-mail: yly@tsinghua.edu.cn

Shengnan Fang

The State Key Laboratory of
Automotive Safety and Energy,
Tsinghua University,
Beijing 100084, China
e-mail: fsn10@mails.tsinghua.edu.cn

Yuzhuo Tai

The State Key Laboratory of
Automotive Safety and Energy,
Tsinghua University,
Beijing 100084, China
e-mail: taiyuzhuo@126.com

Zhenghong Lu

The State Key Laboratory of
Automotive Safety and Energy,
Tsinghua University,
Beijing 100084, China
e-mail: thulzh@126.com

2Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT,AND CONTROL. Manuscript received December 23, 2017; final manuscript received August 28, 2018; published online October 10, 2018. Assoc. Editor: Beshah Ayalew.

J. Dyn. Sys., Meas., Control 141(2), 021007 (Oct 10, 2018) (12 pages) Paper No: DS-17-1629; doi: 10.1115/1.4041358 History: Received December 23, 2017; Revised August 28, 2018

An approach for building a real-time simulation and testing platform for a novel seamless two-speed automated manual transmission (AMT) for electric vehicles (EVs) is proposed and experimentally evaluated. First, the structure of the AMT and the dynamic model of an EV powertrain system equipped with the AMT are presented. Then, according to the testing requirements, a prototype of the AMT, hardware components and software system of the platform are designed. Unlike a real-time transmission test bench, of which the real-time simulation and control system (RSCS) is built based on a dedicated simulator, the RSCS of the platform is built based on a standard desktop personal computer (PC) by using a useful and low-cost solution from matlab/simulink®. Additionally, a simulation model of EV, which is equipped with the AMT and is more suitable for hardware-in-the-loop (HIL) simulation, has been developed. In particular, for conducting various dynamic mechanical tests, the platform is combined with induction motors (IMs), which are adopted with direct torque control (DTC) technique to emulate the dynamic driving conditions of the transmission. The designed platform can be used for different test techniques, including rapid simulation, rapid control prototyping, HIL simulation as well as dynamic mechanical tests. The work expands the capability of the platform and makes the test conditions become closer to reality. Simulation and experimental results indicate that the platform responds well to the real-time dynamic requirements, and it is very useful for developing the proposed transmission.

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Eberleh, B. , and Hartkopf, T. , 2006, “ A High Speed Induction Machine With Two-Speed Transmission as Drive for Electric Vehicles,” International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Taormina, Italy, May 23–26, pp. 249–254.
Jun-Qiang, X. , Guang-Ming, X. , and Yan, Z. , 2008, “ Application of Automatic Manual Transmission Technology in Pure Electric Bus,” IEEE Vehicle Power and Propulsion Conference, Harbin, China, Sept. 3–5, pp. 1–4.
Hofman, T. , and Dai, C. , 2010, “ Energy Efficiency Analysis and Comparison of Transmission Technologies for an Electric Vehicle,” IEEE Vehicle Power and Propulsion Conference (VPPC 2010), Lille, France, Sept. 1–3, pp. 1–6.
Wu, G. , Zhang, X. , and Dong, Z. , 2013, “ Impacts of Two-Speed Gearbox on Electric Vehicle's Fuel Economy and Performance,” SAE Paper No. 2013-01-0349.
Lacerte, M.-O. , Pouliot, G. , Plante, J.-S. , and Micheau, P. , 2016, “ Design and Experimental Demonstration of a Seamless Automated Manual Transmission Using an Eddy Current Torque Bypass Clutch for Electric and Hybrid Vehicles,” SAE Int. J. Altern. Powertrains, 5(1), pp. 13–22. [CrossRef]
Qin, D.-T. , Yao, M.-Y. , Chen, S.-J. , and Lyu, S.-K. , 2016, “ Shifting Process Control for Two-Speed Automated Mechanical Transmission of Pure Electric Vehicles,” Int. J. Precis. Eng. Manuf., 17(5), pp. 623–629. [CrossRef]
Sorniotti, A. , Holdstock, T. , Pilone, G. L. , Viotto, F. , Bertolotto, S. , Everitt, M. , Barnes, R. J. , Stubbs, B. , and Westby, M. , 2012, “ Analysis and Simulation of the Gearshift Methodology for a Novel Two-Speed Transmission System for Electric Powertrains With a Central Motor,” Proc. Inst. Mech. Eng., Part D, 226(7), pp. 915–929. [CrossRef]
Zhou, X. , Walker, P. , Zhang, N. , and Zhu, B. , 2013, “ Performance Improvement of a Two Speed EV Through Combined Gear Ratio and Shift Schedule Optimization,” SAE Paper No. 2013-01-1477.
Gao, B. , Liang, Q. , Xiang, Y. , Guo, L. , and Chen, H. , 2015, “ Gear Ratio Optimization and Shift Control of 2-Speed I-AMT in Electric Vehicle,” Mech. Syst. Signal Process., 50–51, pp. 615–631. [CrossRef]
Hong, S. , Son, H. , Lee, S. , Park, J. , Kim, K. , and Kim, H. , 2016, “ Shift Control of a Dry-Type Two-Speed Dual-Clutch Transmission for an Electric Vehicle,” Proc. Inst. Mech. Eng., Part D, 230(3), pp. 308–321. [CrossRef]
Shin, J. , Kim, J. , Choi, J. , and Oh, S. , 2014, “ Design of 2-Speed Transmission for Electric Commercial Vehicle,” Int. J. Automot. Technol., 15(1), pp. 145–150. [CrossRef]
Mousavi, M. S. R. , Pakniyat, A. , Wang, T. , and Boulet, B. , 2015, “ Seamless Dual Brake Transmission for Electric Vehicles: Design, Control and Experiment,” Mech. Mach. Theory, 94, pp. 96–118. [CrossRef]
Fang, S. , Song, J. , Song, H. , Tai, Y. , Li, F. , and Nguyen, T. S. , 2016, “ Design and Control of a Novel Two-Speed Uninterrupted Mechanical Transmission for Electric Vehicles,” Mech. Syst. Signal Process., 75, pp. 473–493. [CrossRef]
Schlager, M. , Obermaisser, R. , and Elmenreich, W. , 2007, “ A Framework for Hardware-in-the-Loop Testing of an Integrated Architecture,” IFIP International Workshop on Software Technologies for Embedded and Ubiquitous Systems, Berlin, Heidelberg, pp. 159–170.
Menghal, P. , and Laxmi, A. J. , 2012, “ Real Time Simulation: Recent Progress & Challenges,” International Conference on Power, Signals, Controls and Computation (EPSCICON), Thrissur, Kerala, India, Jan. 3–6, pp. 1–6.
Faruque, M. O. , Strasser, T. , Lauss, G. , Jalili-Marandi, V. , Forsyth, P. , Dufour, C. , Dinavahi, V. , Monti, A. , Kotsampopoulos, P. , and Martinez, J. A. , 2015, “ Real-Time Simulation Technologies for Power Systems Design, Testing, and Analysis,” IEEE Power Energy Technol. Syst. J., 2(2), pp. 63–73. [CrossRef]
Grepl, R. , 2011, “ Real-Time Control Prototyping in MATLAB/Simulink: Review of Tools for Research and Education in Mechatronics,” IEEE International Conference on Mechatronics (ICM), Istanbul, Turkey, Apr. 13–15, pp. 881–886.
Alur, R. , Arzen, K.-E. , Baillieul, J. , Henzinger, T. , Hristu-Varsakelis, D. , and Levine, W. S. , 2007, Handbook of Networked and Embedded Control Systems, Springer Science & Business Media, New York.
Dufour, C. , Bélanger, J. , and Abourida, S. , 2006, “ Using Real-Time Simulation in Hybrid Electric Drive and Power Electronics Development: Process, Problems and Solutions,” SAE Paper No. 2006-01-0114.
Belanger, J. , Venne, P. , and Paquin, J. , 2010, “ The What, Where and Why of Real-Time Simulation,” Planet RT, 1(1), pp. 25–29.
Shigley, J. E. , 2011, Shigley's Mechanical Engineering Design, Tata McGraw-Hill Education, New York.
Singh, B. , Jain, P. , Mittal, A. , and Gupta, J. , 2006, “ Direct Torque Control: A Practical Approach to Electric Vehicle,” IEEE Power India Conference, New Delhi, India, Apr. 10–12, p. 4.
Zhu, H. , 2014, “ Research and Development of a Two-Speed Automatic Transmission for Pure Electric Vehicles,” M.S. thesis, Qingdao University, Shandong, China (in Chinese).
Ehsani, M. , Gao, Y. , and Emadi, A. , 2009, Modern Electric, Hybrid Electric, and Fuel Cell Vehicles: Fundamentals, Theory, and Design, CRC Press, Boca Raton, FL.
Gillespie, T. D. , 1992, Fundamentals of Vehicle Dynamics, Society of Automotive Engineers, Warrendale, PA.
Mitschke, M. , and Wallentowitz, H. , 2009, Dynamik Der Kraftfahrzeuge, Tsinghua University Press, Beijing, China (in Chinese).
Huria, T. , Ceraolo, M. , Gazzarri, J. , and Jackey, R. , 2012, “ High Fidelity Electrical Model With Thermal Dependence for Characterization and Simulation of High Power Lithium Battery Cells,” Electric Vehicle Conference (IEVC), pp. 1–8.


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Fig. 1

Schematic diagram of an EV powertrain system equipped with a novel seamless two-speed AMT (left) and principle of the transmission (right)

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Fig. 2

Block diagram of an EV powertrain system equipped with the seamless two-speed AMT (BR—brake; CL—clutch; C—carrier;P—planet gear; R—ring gear; S—sun gear)

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Fig. 3

Block diagram of the test platform

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Fig. 4

Real-time simulation model of EV equipped with the seamless two-speed AMT

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Fig. 5

Simulation model of the seamless two-speed AMT

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Fig. 6

Design of a real-time simulation and testing platform for a seamless two-speed AMT: (a) software configuration, (b) main hardware components, and (c) host PC and target PC

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Fig. 7

Simulation results of the EV model equipped with the seamless two-speed AMT using the UDDS drive cycle

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Fig. 8

Working points of the EV traction motor in the UDDS drive cycle

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Fig. 9

Shift actuator stroke control during upshift process

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Fig. 10

Input and output speeds of the AMT in upshift process

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Fig. 11

Input and output torques of the AMT in upshift process

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Fig. 12

Comparison of the experimental and simulation test results using drive cycle

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Fig. 13

Comparison of LM load torque results (zoomed-in view)



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