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Development of a compact and autonomous energy-efficient transmission is a key technological issue for Next-Generation Vehicle (NxGV). The aim of this study is to fabricate a prototype of a compact and lightweight autonomous electromagnetic two-speed gearbox (AEM2SGB) for EV. The first-gear is for acceleration in uphill, which provides high torque, and the second-gear is for higher speed. A compact and lightweight laboratory-scale AEM2SGB has been developed. Furthermore, an autonomous fuzzy controlled system has been developed with associating the wheel speed sensor and motor sensor to control the power flow to the electromagnetic actuator (EMA). The test result of AEM2SGB’s shift times in the first gear to be 1.5 s with a higher torque of 3000 Nm and 1.8 s in the second gear for 110 km/h with supplying current in the range of 12–16 A. Thus, the upscale AEM2SGB reduces the NxGV’s transmission-weight about 40–50% and improves the NxGV performance by 30% and improves the battery life by 15%.

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Development of Autonomous Transmission

  • 章节

  • 发表日期：

    2026年

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  • Ataur Rahman,
  • Sany Izan Ihsan,
  • Fadly Jashi Darsivan Bin Ridhuan Siradj

摘要

Development of a compact and autonomous energy-efficient transmission is a key technological issue for Next-Generation Vehicle (NxGV). The aim of this study is to fabricate a prototype of a compact and lightweight autonomous electromagnetic two-speed gearbox (AEM2SGB) for EV. The first-gear is for acceleration in uphill, which provides high torque, and the second-gear is for higher speed. A compact and lightweight laboratory-scale AEM2SGB has been developed. Furthermore, an autonomous fuzzy controlled system has been developed with associating the wheel speed sensor and motor sensor to control the power flow to the electromagnetic actuator (EMA). The test result of AEM2SGB’s shift times in the first gear to be 1.5 s with a higher torque of 3000 Nm and 1.8 s in the second gear for 110 km/h with supplying current in the range of 12–16 A. Thus, the upscale AEM2SGB reduces the NxGV’s transmission-weight about 40–50% and improves the NxGV performance by 30% and improves the battery life by 15%.