本文分析了位置传感器的机械误差和电气误差对换向的影响，指出了减小换向误差的途径。

This paper studies what will happen when there are mechanical and electrical errors in position sensor, and how to decrease errors.

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通过改造绕组调制函数所建立的数学模型分析计算绕组的分层系数、正交误差和电气误差。

Through reform the modulating function of the winding to set up the mathematic model, by which it analyses and calculate the layer coefficient, quadrature error, electrical error.

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同时将电气稳态的概念引入转子位置估计中，有效地解决了电机在稳态情况下转子位置估计误差大的问题。

And electric steady also is introduced to estimation of rotor position, which solves effectively the problem of big error on rotor position estimation in process of dynamic.

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