当电机转速的估计值收敛于转速的真实值时，观测的转子磁链也收敛于其真实值，可将其用于直接磁场定向控制中。
When the estimated speed converges to the actual rotor speed, the rotor flux observed converges to its true value, which can be used in direct field orientation control (DFOC).
针对迭代过程中估计值偏离目标值时收敛较慢的情况，提出混合二分算法。
The algorithm has slow convergence when the estimated value is far from the target. This paper presents a mixed dichotomy to solve the problem.
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