中文摘要：

提出一种适合中、高速运行的具有容错功能的开关磁阻电机无位置传感器控制方法。在中、高速运行区域，电机采用单脉冲控制模式，当开通角提前时，采用相电流斜率检测与相电感斜率过零检测相结合的方法实现定、转子对齐位置的估计；当开通角大于或等于零度时，采用相电感斜率过零检测法实现定、转子对齐位置的估计。该方法在每个电周期内均可估计出对齐位置这一特殊位置点，并得到相应的位置检索脉冲。利用位置检索脉冲可以估计出转速和转子位置信息。为验证方法的可行性，在一台12／8结构样机中进行了实验。实验结果表明，该方法不仅避免了开通角的影响，而且保持了位置检测各相独立的特点。因此，可以实现位置信号的多相冗余。另外，该方法无需增加额外硬件，也避免的复杂的计算和存储过程。因此，该算法方便实现，具有较强的通用性和可移植性。

英文摘要：

A fault-tolerant sensorless control method for switched reluctance motors （SRM） is presented in this paper. This method is suitable for medium and high speed operating machines. In medium and high speed operating conditions, the single pulse control mode is utilized. When the turn-on angle is advanced, the phase current slope detecting and the phase inductance slope zero-crossing detecting method are combined for estimating the aligned position of the stator and rotor poles. When the turn-on angle is lagged behind zero degree, only the phase inductance slope zero-crossing detecting method is utilized. Using this method, the aligned position in each electrical cycle can be estimated, and the position index pulses can also be estimated. Based on the position index pulses, the speed and rotor position can be estimated. To verify the proposed method, the experiments have been performed in a 12/8 structure SRM prototype. The experimental results show that this method can avoid the effects of the turn-on angle and keep the independence of position estimation of each phase. Thus, the heterogeneous redundancy of the position signals can be realized. In addition, this method requires, no additional hardware and no complex computation or memory storage. Thus, the method is quite easy for implementation and possesses good generality and portability.