Direct control of torque over the motor speed range is provided by the drive, which helps the motor and drive generate torque levels high enough to cycle the press back to ready position.
直接控制扭矩而不是电机转速范围，可以使得电机和变频器产生足够高的扭矩使得压机可以回复到原来的位置。
High torque to weight ratio, high efficiency and wide speed range should be the qualities possessed of by the motor drive systems in Electric Vehicles.
电动汽车中的电机驱动系统应该具有高转矩重量比、高效率以及宽广调速范围等特点。
Can be achieved within a wide range of stepless speed regulation, can output a larger and larger torque thrust.
可大范围内实现无级调速，可输出较大推力和较大力矩。
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