Analysis of the dynamic characteristics of the gear-shifting process under external excitation
This study focuses on a novel clutchless and synchronizer-free drive system designed explicitly for pure electric vehicles. In contrast to the majority of previous research that solely considers internal excitations, this study not only incorporates various non-linear factors such as time-varying fr...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2023-12-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/16878132231216627 |
| _version_ | 1797378872033935360 |
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| author | Wei Zhang Qiang Song Wuxuan lai Mingsheng Wang Peng Sun |
| author_facet | Wei Zhang Qiang Song Wuxuan lai Mingsheng Wang Peng Sun |
| author_sort | Wei Zhang |
| collection | DOAJ |
| description | This study focuses on a novel clutchless and synchronizer-free drive system designed explicitly for pure electric vehicles. In contrast to the majority of previous research that solely considers internal excitations, this study not only incorporates various non-linear factors such as time-varying friction forces, time-varying mesh stiffness, and damping associated with internal excitations but also places significant emphasis on analyzing the impact of non-linear external excitations, including road surface unevenness and motor torque fluctuations, on the shifting process of the drive system. Subsequently, a non-linear dynamic model of the shifting process is established. In the modeling process, departing from the traditional two-degree-of-freedom quarter vehicle dynamics model, this study adopts an elastic tire-body and elastic tire-tread tire model, enabling the establishment of a highly accurate multi-degree-of-freedom quarter vehicle dynamics model. The simulation results indicate that road surface roughness and motor torque fluctuation significantly impact the gear-shifting process and the impact of road surface roughness increases with the level of roughness. Moreover, the effect of motor torque fluctuation on the gear-shifting process varies depending on different factors and is not simply additive. Consequently, when formulating and optimizing shifting strategies, it becomes imperative to consider various external factors. The research methodology integrates these factors into the dynamic analysis of the shifting process, providing a theoretical basis for developing effective shifting control strategies while considering external excitations. |
| first_indexed | 2024-03-08T20:13:54Z |
| format | Article |
| id | doaj.art-3c740de458924f64a831a3c91a8d6fdc |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-03-08T20:13:54Z |
| publishDate | 2023-12-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-3c740de458924f64a831a3c91a8d6fdc2023-12-22T21:03:36ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402023-12-011510.1177/16878132231216627Analysis of the dynamic characteristics of the gear-shifting process under external excitationWei Zhang0Qiang Song1Wuxuan lai2Mingsheng Wang3Peng Sun4National Engineering Laboratory for Electric Vehicles, Beijing, ChinaNational Engineering Laboratory for Electric Vehicles, Beijing, ChinaNational Engineering Laboratory for Electric Vehicles, Beijing, ChinaNational Engineering Laboratory for Electric Vehicles, Beijing, ChinaNational Engineering Laboratory for Electric Vehicles, Beijing, ChinaThis study focuses on a novel clutchless and synchronizer-free drive system designed explicitly for pure electric vehicles. In contrast to the majority of previous research that solely considers internal excitations, this study not only incorporates various non-linear factors such as time-varying friction forces, time-varying mesh stiffness, and damping associated with internal excitations but also places significant emphasis on analyzing the impact of non-linear external excitations, including road surface unevenness and motor torque fluctuations, on the shifting process of the drive system. Subsequently, a non-linear dynamic model of the shifting process is established. In the modeling process, departing from the traditional two-degree-of-freedom quarter vehicle dynamics model, this study adopts an elastic tire-body and elastic tire-tread tire model, enabling the establishment of a highly accurate multi-degree-of-freedom quarter vehicle dynamics model. The simulation results indicate that road surface roughness and motor torque fluctuation significantly impact the gear-shifting process and the impact of road surface roughness increases with the level of roughness. Moreover, the effect of motor torque fluctuation on the gear-shifting process varies depending on different factors and is not simply additive. Consequently, when formulating and optimizing shifting strategies, it becomes imperative to consider various external factors. The research methodology integrates these factors into the dynamic analysis of the shifting process, providing a theoretical basis for developing effective shifting control strategies while considering external excitations.https://doi.org/10.1177/16878132231216627 |
| spellingShingle | Wei Zhang Qiang Song Wuxuan lai Mingsheng Wang Peng Sun Analysis of the dynamic characteristics of the gear-shifting process under external excitation Advances in Mechanical Engineering |
| title | Analysis of the dynamic characteristics of the gear-shifting process under external excitation |
| title_full | Analysis of the dynamic characteristics of the gear-shifting process under external excitation |
| title_fullStr | Analysis of the dynamic characteristics of the gear-shifting process under external excitation |
| title_full_unstemmed | Analysis of the dynamic characteristics of the gear-shifting process under external excitation |
| title_short | Analysis of the dynamic characteristics of the gear-shifting process under external excitation |
| title_sort | analysis of the dynamic characteristics of the gear shifting process under external excitation |
| url | https://doi.org/10.1177/16878132231216627 |
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