Optimized control of engine start assisted by the disconnect clutch in a P2 hybrid automatic transmission

Xu, Xiangyang; Liang, Yinghua; Jordan, Mick; Tenberge, Peter; Dong, Peng

doi:10.1016/j.ymssp.2019.01.052

Cited by 55 publications

(20 citation statements)

References 31 publications

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“…However, the torque will be interrupted during the shifting process of AMT. Many researchers have conducted in-depth studies on the control methods to improve the shift quality [7][8][9][10][11][12][13][14]. Tseng et al [15,16] adopted AMT in an EV and proposed a gear-shifting control strategy including speed synchronization control and motion control of shift actuator.…”

Section: Introductionmentioning

confidence: 99%

A Novel Electric Dual Motor Transmission for Heavy Commercial Vehicles

Liang

Hao³

et al. 2021

Automot. Innov.

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As a vital vehicle part, the powertrain system is undergoing a fast transition towards electrification. The new integrated electric drive system has been widely used, especially for passenger cars. In this work, a novel electric dual motor transmission is proposed for heavy commercial vehicles. The transmission scheme is firstly introduced, which can achieve 9 different operating modes including 5 single motor modes and 4 dual motor modes. Then, the mode shift map with minimum energy consumption is designed based on the motor efficiency map and the proposed energy management strategy. The driving power is appropriately distributed between the two motors in dual motor modes under the condition of minimum power consumption. In addition, a coordinated control strategy is developed for mode shift control without power interruption. The results show that the electric dual motor transmission has advantages in power consumption and power shift ability compared with the conventional single motor automated manual transmission.

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Section: Introductionmentioning

confidence: 99%

A Novel Electric Dual Motor Transmission for Heavy Commercial Vehicles

Liang

Hao³

et al. 2021

Automot. Innov.

Self Cite

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“…Their dynamics models were employed to investigate the vibration features of the locomotive gear transmission system with the gear tooth root crack faults. 18,19 Xu et al 20,21 also studied the vibrations of the gear transmission system cause by the faults. Wang et al 22,23 introduced a comprehensive three-dimensional vehicle-track-coupled dynamics model considering the traction drive system and axle bearings.…”

Section: Introductionmentioning

confidence: 99%

“…18,19 Xu et al. 20,21 also studied the vibrations of the gear transmission system cause by the faults. Wang et al.…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of the axle bearings considering the combined errors for a high-speed train

Liu

2020

Proceedings of the Institution of Mechanical Engineers, Part K:

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Axle bearings are critical elements of high-speed trains. Although the quality and precision of axle bearings have been significantly improved, the manufacturing errors, such as the roundness and waviness errors, cannot be eliminated during their manufacturing processes. The axle bearings with the roundness and waviness errors have great influences on vibration performances of the high-speed trains. To obtain an in-depth understanding of the vibrations caused by the axle bearing with the combined errors considering both the roundness and waviness errors. This work conducts an improved analytical model for a high-speed train considering the axle bearings with the combined errors, which cannot be formulated by the previous train model considering single roundness or waviness errors. The combined errors are defined to include both the roundness and waviness errors. A new multiple cosine function is presented to model the combined errors. The time-depended force excitations produced by the combined errors are also considered in the dynamic model. A track irregularities model is utilized to formulate the road spectrum displacement excitations from the rail and roadbed. The influences of the error amplitude and order on the vibrations of high-speed train are analyzed. The results for the single roundness error model, single waviness error model, and combined errors model are compared to represent the superiority of proposed model. It depicts that this work can provide a more reasonable analytical method for understanding the vibrations of high-speed train considering the axle bearings with the combined manufacturing errors compared to the reported single error models.

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“…During the mode transition of the single-shaft hybrid powertrain, the engine can be started and engaged into the driveline by the clutch. The performance of mode transition mainly relies on the quality of the clutch control [9,10], hence, the control of clutch engagement remains an important and challenging issue during mode transition. Some researchers have dedicated much valuable work to achieve fast and smooth clutch engagement control of mode transition for HEVs.…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have dedicated much valuable work to achieve fast and smooth clutch engagement control of mode transition for HEVs. For example, a nonlinear feedforward-feedback controller and PID algorithm are developed in [10] to effectively improve both riding comfort and engine-start time of a P2 hybrid vehicle. A robust control-based hierarchical mode transition control approach is proposed in [11] to reduce the mode transition time and obtain acceptable vehicle jerk.…”

Section: Introductionmentioning

confidence: 99%

A Novel Control Method of Clutch During Mode Transition of Single-Shaft Parallel Hybrid Electric Vehicles

Ding

Jiao

2019

Electronics

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The mode transition of single-shaft parallel hybrid electric vehicles (HEVs) between engine and motor has an important impact on power and drivability. Especially, in the process of mode transition from the pure motor-drive operating mode to the only engine-drive operating mode, the motor starting engine and the clutch control problem have an important influence on driving quality, and solutions have a bit of room for improving dynamic performance. In this paper, a novel mode transition control method is proposed to guarantee a fast and smooth mode transition process in this regard. First, an adaptive sliding mode control (A-SMC) strategy is presented to obtain the desired torque trajectory of the clutch transmission. Second, a proportional-integral (PI) observer is designed to estimate the actual transmission torque of the clutch. Meanwhile, a fractional order proportional-integral-differential (FOPID) controller with the optimized control parameters by particle swarm optimization (PSO) is employed to realize the accurate position tracking of the direct current (DC) motor clutch so as to ensure clutch transmission torque tracking. Finally, the effectiveness and adaptability to system parameter perturbation of the proposed control approach are verified by comparison with the traditional control strategy in a MATLAB environment. The simulation results show that the driving quality of the closed-loop system using the proposed control approach is obviously improved due to fast and smooth mode transition process and better adaptability.

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Optimized control of engine start assisted by the disconnect clutch in a P2 hybrid automatic transmission

Cited by 55 publications

References 31 publications

A Novel Electric Dual Motor Transmission for Heavy Commercial Vehicles

A Novel Electric Dual Motor Transmission for Heavy Commercial Vehicles

Vibration analysis of the axle bearings considering the combined errors for a high-speed train

A Novel Control Method of Clutch During Mode Transition of Single-Shaft Parallel Hybrid Electric Vehicles

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