High speed, big package, ac motor drives beam directly, controlled by PLC. Stepless speed regulated by inverter, winding at a constant linear speed.
高速度、大卷装、交流电机直接拖动经轴，并由plc控制，变频器实现无级调速，恒线速卷绕。
The precise motor parameters affect the quality of the motor control system seriously in high performance ac drives of induction machine.
感应电机高性能交流调速方法中，电机参数的准确性严重影响着电机控制系统的控制品质。
Direct Torque Control (DTC) has the advantages of less reference frame commutation-computation and less influence by motor parameter variations in AC drives system.
交流调速中直接转矩控制具有坐标变换运算量小和受电机参数变化影响小的特点。
At the heart of the tractor is the electric motor, which drives the hydraulic pump that supplies power to the wheels. Both ac and DC powered motors are used in e-line tractors.
爬行器的核心是电机，其驱动液压泵为轮组提供动力，电缆爬行器可以使用AC或DC电机。
At the heart of the tractor is the electric motor, which drives the hydraulic pump that supplies power to the wheels. Both ac and DC powered motors are used in e-line tractors.
爬行器的核心是电机，其驱动液压泵为轮组提供动力，电缆爬行器可以使用AC或DC电机。
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