磁场加速法是一种新型、高性能的感应电动机控制方法，其电磁过程可用暂态等值电路进行分析。
Field acceleration method is a new control method for induction motor. Its electro-magnetic process can be analysed with the transient equivalent circuit.
首先对有对重的提升系统进行了力学分析，得出了加速阶段由于惯性的作用电动机必须提供的附加力矩。
Based on mechanics analysis of elevating system with balancing weight, the additional driving moment that the motor have to supply for accelerating a inertia load is obtained.
并着重对电动机的转矩、转动惯量及加速能力进行了匹配校核， 对机械传动装置刚度变化及弹性系统刚度变化引起的定位误差进行了验算。
The capabilities of the torque, moment of inertia and acceleration of the servo motor is mostly checked. The rigidity and accuracy of servo feed system is verified.
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