计算了对应不同转子位置的空载气隙磁场分布，求出了静转矩特性和平衡头最高工作转速。
After calculating no load gap magnetic fields according to different rotor positions, static torque characteristics and highest working speed are worked out.
通过对步进电动机矩频特性及其运动方程序的分析，建立了步进电动机最高运行频率的数学模型，即最高运行频率为最大静转矩和负载转矩的函数。
The mathematical model of stepper motors maximum operating frequency is established based on the analysis of stepper motors torque-frequency characteristic and systemic motion equation.
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