Dynamic Torque Control Strategy of Engine Clutch in Hybrid Electric Vehicle

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1 JOURNAL OF MECHANICAL ENGINEERING Vol.49 No.4 Feb DOI /JME * BOUKEHILI Adel 1 ( ) (Proportional-integral-differential, PID) PID U467 Dynamic Torque Control Strategy of Engine Clutch in Hybrid Electric Vehicle NI Chengqun 1 ZHANG Youtong 1 ZHAO Qiang 2 BOUKEHILI Adel 1 (1. Low Emission Vehicle Research Laboratory, Beijing Institute of Technology, Beijing ; 2. PetroChina Pipeline R&D Center, Langfang ) AbstractHybrid electric vehicles(hevs) generate the power required to drive the vehicle via a combination of internal combustion engines and motor, the mode switch between internal combustion engines and motor is essential to vehicle s power and drivability performance. In single-axle parallel hybrid electric vehicle, considering the difference of dynamic characteristics between ICE and motor, there are fluctuation of torque and the longitudinal impact during mode switch, making drivers uncomfortable. Dynamic torque control strategy is designed in order to solve drivability issues caused by propulsion mode s switch during motor-drive mode to engine-drive mode and engine-motor-drive mode. This strategy includes fuzzy adaptive proportional-integral-differential(pid) control for engine speed and dynamic torque compensation control. The control strategy is finally validated by experimental tests based on the test bench of hybrid electric vehicle. The bench test results show that the proposed control strategy can effectively suppress the longitudinal degree of jerk caused by power coupling, which is the fundamental for our deeply research in the future. Key wordshybrid electric vehicle Dynamic torque control Engine clutch Control strategy 0 1 [1] * (2010CDA010) (T201114) [2] THS(Toyota hybrid system) [3-4] HWANG [5]

2 AMESim 1 1 CANOVA [6] P e /kw 172 T max /(Nm) 678 P e /kw 115 [7] ISG T max /(Nm) U/V 288 Q/(Ah) 180 [8] 1 i [9] 2 i i S5-80AMT 4 i i 5 i R [2] [10] CAN AMT () [11] 1-1 (Autornated mechanical transnlissionamt) 2 2 1

3 () (Proportional-integraldifferential, PID) PID PID [12] PID PID PID 2 e Δe PI PI 2 PID PI K p K i K p K i (1) (2) 01 K' p K' i Kp Kp,min K p (1) Kp,max Kp,min Ki Ki,min K i (2) Ki,max Ki,min K p,max K p,min K i,max K i,min K p K i K' p 3 K' i e 4 {NB NSZOPSPB} Δe K' p K' i PI

4 K p K i PID 5 4 (3) T m,target e e 3 K' p Δe NB NS ZO PS PB NB B B B B B NS S B B B S ZO S S B S S PS S B B B S PB B B B B B 4 K' i Δe NB NS ZO PS PB NB B S S S B NS B B S B B ZO B B B B B PS B B S B B PB B S S S B ( ) 5 CAN T e,set T e Tm,target Te,set Te (3) (3) (4) T K( T T ) (4) m,target e,set e K a 6b AMT 3.2 dspace MicroAutobox C

5 ( 7) Nm r/min 100 Nm 120 Nm r/min 100 Nm 20 Nm b 7 8 8b 8a 8

6 a 7a PI 9b 8 PI a 7a 9b

7 /(m/s 3 ) m/s 3 5 dspace MicroAutobox (1) (2) (3) [1] CHAN C C, WONG Y S. The state of art of electric vehicles[j]. Journal of Asian Electric Vehicles, 2004(2)

8 [2]. [J]., 2011, 47(4) ZHAO Zhiguo, HE Ning, ZHU Yang, et al. Mode transition control for four wheel drive hybrid electric car[j]. Journal of Mechanical Engineering, (4) [3] AKIHIRO K, TETSUYA A, SHOICHI S. Driving forcecontrol of a parallel-series hybrid system[j]. JSAE Review, 1999, 20(3) [4] KAZUNARI M, YOSHIAKI I, YUKIO I. Design of the surge control method for the electric vehicle powertrain[r]. SAE, [5] HWANG H S, YANG D H. Torque control of engine clutch to improve the driving quality of hybrid electric vehicles[j]. International Journal of Automotive Technology, 2011, 12(5) [6] CANOVA M, GUEZENNEC Y, YURKOVICS H. On the control of engine start/stop dynamics in a hybrid electric vehicle[j]. Journal of Dynamic Systems, Measurement, and Control, 2009, [7]. ISG [J]., 2011(6) ZHAO Feng, LUO Yugong, LI Keqianget al. Traction control scheme for ISG hybrid electric vehicle based on dynamic coordinated control[j]. Automotive Engineering, 2011(6) [8]. [J]., 2003, 39(10) TONG Yi, OUYANG Minggao, ZHANG Junzhi. Real-time simulation and research on control algorithm of parallel hybrid electric vehicle[j]. Chinese Journal of Mechanical Engineering, 2003, 39(10) [9]. [D]., YAN Yunbing. Study on the dynamic control in parallel hybrid electric vehicle[d]. WuhanWuhan University of Technology, [10]. [J]., 2011(12) DAI Yifan, LUO Yugong, LI Keqiang, et al. Dynamic coordinated control for a full hybrid electric vehicle with single motor[j]. Automotive Engineering, 2011(12) [11] PISU P, RIZZONI G, CALO E. Control strategies for parallel hybrid electric vehicles[c]//ifac Symp. Adv. Automot. Control, [12] LEE C C. Fuzzy logic in control systemfuzzy logic controller. Part1[J]. IEEE Trans. on System Man and Cybernetics, 1990, 20(2) ()1985 nichengqun@126.com youtong@bit.edu.cn

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