Modeling of the Electro-Hydraulic Actuator for a Dual Clutch Transmission

Hao, Hong Tao; Lu, Tianhuan; Zhang, Jianwu; Zhou, Bin

doi:10.4028/www.scientific.net/amm.742.525

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…A main feature of the VFS is that it is a closed-loop control system: pressure feedback is determined by the throttles R1 and R2. The detailed description was presented in Balau et al 13 , Hao HT et al 14 and Mustafa et al 15 Initially, there is no oil in the clutch chamber and the clutch is completely open under the action force of the return spring. Once the wet clutch is to be engaged, the oil will begin to flow into the clutch chamber.…”

Section: Modeling Of the Electro-hydraulic Actuator System Descriptionmentioning

confidence: 99%

A new control strategy of the filling phase for wet dual clutch transmission

Huang

Zhang

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part C:

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The traditional filling control strategy mainly relies on a large number of calibrations and is an open loop control. In order to avoid cumbersome calibrations and improve the control precision, a systematic approach of the filling control for wet dual clutch transmission is established in this paper. First, a model of the electro-hydraulic actuator for the wet dual clutch transmissions is presented and validated by the experiments. Then, an analytic solution method is developed for the filling control. To obtain the analytic solution of the filling pressure trajectory in the filling phase, the nonlinear mathematic model for wet clutches is transformed into a model in linear space by the feedback linearization, and then the optimal filling pressure trajectory is obtained based on Pontryagin's Minimum Principle. Furthermore, to improve the control accuracy of a variable force solenoid, a closed loop control based on adaptive generalized predictive control algorithm is applied to the developed model of the electro-hydraulic actuator to track the optimal filling pressure trajectory. The simulation results indicate that the control strategy is effective for solving the filling control problem.

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Section: Modeling Of the Electro-hydraulic Actuator System Descriptionmentioning

confidence: 99%

A new control strategy of the filling phase for wet dual clutch transmission

Huang

Zhang

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part C:

Self Cite

View full text Add to dashboard Cite

show abstract

“…They conducted and analyzed DCT vehicle shifting dynamics simulations using an integrated model comprising the engine, transmission, and vehicle environment. Hongtao Hao (2015) and others suggested hydraulic actuator operation as a key factor influencing wet DCT [15]. They analyzed the operating principle and performed hydraulic actuator modeling using dynamic equations of Variable Force Solenoids (VFS) and wet clutches.…”

Section: Introductionmentioning

confidence: 99%

Parameter Study for Establishing a Synchronizer Control Strategy in Tractor Dual-Clutch Transmission

Byeon,

Kim,

Park

et al. 2024

Agriculture

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Research on dual-clutch transmissions in agricultural tractors is on the rise. Dual-clutch transmissions provide a smooth driving experience and easy operation compared to manual transmissions, as they eliminate power interruptions. Accordingly, there is ongoing research to improve the conventional synchronizer pre-selection method. The study introduces a new control strategy to enhance shifting quality by focusing on shift force and timing. Specifically, the goal is to optimize the impact of pre-selection-induced shock and delayed shift time, minimizing discomfort for the driver. According to the experimental results, it was determined that factors influencing the impact of preselect engagement on gear shift shock were absent, while factors capable of affecting shift time were identified in the form of shift force. However, it was concluded that optimizing shift force and shift timing based on the number of shifts can enhance the quality of gear shifting. Even during preselect disengagement, the factor influencing gear shift shock was identified as the shift timing, with no discernible factor affecting shift time. Nevertheless, it was judged that optimizing shift force and shift timing based on the number of shifts can lead to an improvement in gear shifting quality. In conclusion, the control strategy determined through the parameter study is expected to improve the shifting quality of tractors equipped with dual-clutch transmission. These findings have the potential to support efficient and convenient tractor operation in the agricultural sector.

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Modeling of the Electro-Hydraulic Actuator for a Dual Clutch Transmission

Cited by 2 publications

References 7 publications

A new control strategy of the filling phase for wet dual clutch transmission

A new control strategy of the filling phase for wet dual clutch transmission

Parameter Study for Establishing a Synchronizer Control Strategy in Tractor Dual-Clutch Transmission

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