以工业管磨机及其传动机构与驱动电机当作一个统一的机电系统 ,探讨其在起动过程中由于电动机力矩的激励而产生的扭转振动。首先 ,建立了该系统的三自由度扭转振动模型 ,并根据在起动中磨机筒体的转角不大于 37°的实测数据 ,用一段直线代替 0～ 37°之间的正弦曲线 ,简化了参数 ,得出计算值。然后 ,在实际磨机的低速轴上进行了扭矩测试 ,结果与理论值相当吻合。 Industrial tube mill and its transmission mechanism and drive motor as a unified mechanical and electrical systems, to explore its starting process due to the excitation of motor torque torsion vibration. First of all, a three-degree-of-freedom torsional vibration model of the system is established. Based on the measured data of the mill body’s rotation angle no greater than 37 ° during starting, a straight line is substituted for the sinusoidal curve between 0 and 37 ° to simplify the parameter , Come to the calculated value. Then, a torque test was performed on the low speed shaft of the actual mill, and the result was in good agreement with the theoretical value.