Train traction and braking performance is the most important characteristic of the train, which is an important basis for the design of train traction drive system.

列车的牵引与制动性能的计算研究，是列车设计必须进行的最基础的工作；

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When driving on slippery surfaces, the four-wheel drive system can automatically transfer up to 100 percent of torque to the front wheels when additional traction and stability is required.

防滑表面上开车时，四轮驱动系统可以自动转移到100%的扭矩和前轮，当更多的牵引和稳定性是必须的。

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Fuzzy theory was used to design throttle controller and braking controller of traction control system for four-wheel drive vehicles.

针对四轮驱动汽车，应用模糊理论设计了牵引力控制系统的油门控制器和制动控制器。

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