1756-CFM
1756-CFM
1756-CFM
作为伺服机，交流伺服电机除了必须具有线性度很好的机械特性和调节特性外，还必须具有伺服性：即控制信号电压强时，电动机转速高；控制信号电压弱时，电动机转速低；若控制信号电压等于零，则电动机不转。
但是普通异步电动机的转速不是转矩的单值函数，而且只能在一定范围内稳定运行，作为驱动用途的电动机，这一特性是合适的。但作为伺服电动机，则要求机械特性必须是单值函数并尽量具有线性特性，以确保在整个调速范围内稳定运行。为满足这一要求，通常的做法是，加大转子电阻，使得产生大转矩时的转差率。使电动机在整个调速范围内接近线性。一般情况下，转子电阻越大，机械特性越接近线性，但堵转转矩和大输出功率越小，效率越低。因此，交流伺服电机的效率比一般驱动用途的电机低。
之交流伺服电机必须有线性度好的机械特性和调节特性外，还必须具有伺服性。
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ASML 4022.430.1225 T Measurment Module Board SVG
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