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Research on nonlinear dynamic characteristics of high-speed gear in two-speed transmission system [PDF]
Scientific Reports, 2023 The working performance and service life of the two-speed transmission system directly affects the performance and service life of helicopters and other equipment.
Wuzhong Tan +4 more
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Study on nonlinear dynamic characteristics of a two-speed transmission system at low speed [PDF]
PLoS ONELiu Zhihui +5 more
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IEEE Access, 2023 Multi-speed transmissions for electric vehicles (EVs) can achieve superior economic and dynamic performances than single-speed transmissions. Since gear shifting causes an equivalent inertia variation in multi-speed transmissions, the optimal shifting ...
Kijong Park, Sang-Kil Lim, Kihan Kwon
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A Bimodal Hydrostatic Actuator for Robotic Legs with Compliant Fast Motion and High Lifting Force
Actuators, 2023 Robotic legs, such as for lower-limb exoskeletons and prostheses, have bimodal operation: (1) within a task, like for walking (high speed and low force for the swing phase and low speed and higher force when the leg bears the weight of the system); (2 ...
Alex Lecavalier +3 more
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Two-Speed Transmission Structure and Optimization Design for Electric Vehicles
Machines, 2023 The trend in the global automotive industry is moving towards electric vehicles that do not emit exhaust gases and use eco-friendly fuel. Electric vehicles are more eco-friendly compared to internal combustion engine vehicles, as they emit less carbon ...
Wonhyeong Jeong +4 more
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Noise Reduction of Two-Speed Automatic Transmission for Pure Electric Vehicles
Vehicles, 2023 At present, the noise of pure electric vehicles is a research hotspot, especially the noise of automatic transmission. In order to reduce the noise problem in the test, this paper proposes a method to optimize the local structure of the gearbox housing ...
Zhaoyao Shi +4 more
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Noise analysis and optimization of the gear transmission system for two-speed automatic transmission of pure electric vehicles [PDF]
Mechanical Sciences, 2023 In this study, the noise of the gear transmission system for two-speed automatic transmission (2EAT) of pure electric vehicles was analyzed and optimized.
S. Zhaoyao +3 more
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Energies, 2023 The two-speed automatic transmission can adjust the drive motor speed of electric vehicles and expand their output torque range. This study proposes a rule-based partitioned gear-shifting strategy for pure electric vehicles equipped with a two-speed dual-
Bolin He +5 more
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Modeling and Optimal Shift Control of a Planetary Two-Speed Transmission
World Electric Vehicle Journal, 2019 To improve the efficiency of electric vehicles (EVs), a planetary two-speed transmission is proposed, which consists of a brushless direct current (BLDC) motor, a turbo-worm reducer, two multi-disc wet brakes, and a Simpson planetary gearset.
Xinxin Zhao, Jing Tang
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Energies, 2022 This paper introduces a new two-speed planetary gear automatic transmission using an electronically controlled wedge clutch. In order to verify the feasibility of using this transmission in pure electric vehicles, the influencing factors of the two-speed
Wei Zhang, Jue Yang, Wenming Zhang
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