| 1. | In hybrid stepper motor , the back emf of stator winding is function of rotor position , continuous rotor position is obtained from the function
就混合式步进电机而言，定子绕组的反电势是转子位置的函数，从而可以解算出连续的转子位置信息。 |
| 2. | This paper uses " virtual neutral point method " to measure the " zero crossing " , then the soft deal " zero crossing " to get the six key position to commutate
本文采用虚拟中点的方法来识别反电势过零点，然后对过零点进行处理得到无刷电机换向的六个关键位置。 |
| 3. | In this paper , the influence of rotor - skewing on the machine performance , such as the unbalanced radial force , cogging torque and back emf , is analyzed , with two different prototypes being comparatively studied
分析了转子斜极对其不对称径向力、齿槽定位转矩和反电势等性能的影响，并用两种不同结构的电机进行对比研究。 |
| 4. | Based on intelligent power module ( ipm ) and digital signal processor ( dsp ) , this system used hack - emf ( electromotive force ) method to implement the sensorless control for brushless dc motor of air conditioner ( ac ) in fcv
该系统基于智能功率模块( ipm )和数字信号处理器( dsp ) ，采用反电势法实现了电动汽车空调用无刷直流电动机的无传感器控制。 |
| 5. | Then one of the methods of rotor position detection - bemf zero crossing point detection is explained in detail . in succession , the chapter dissertates the method of measuring phase voltage and supply voltage , and analyses the error of rotor position using this method
对转子位置检测方法中的反电势过零点法作了比较详细的介绍，讨论了反电势法中相电压和端电压的检测方法，并分析了利用该方法时而产生的转子位置检测误差。 |
| 6. | The system uses the microchip pic16f877 made by microchip co . ltd as a control chip . it fulfills the capture of " zero crossing " point and the multifarious protective functions . it realize the approximately exact commutation of the motor and unmanned supervision of the system
本系统是以microchip公司生产的pic16f877为核心芯片，软硬件结合完成对反电势过零点的捕捉和系统的各种保护，实现了电机较为准确的换向和无人监控安全运行。 |
| 7. | At the end of this paper , i put forward a new back emf sensing method which does n ' t require a virtual neutral point to realize the sensing for rotor flux position . it improves the performance of bldc motor at low speed and at high speed and broaden its range of timing
最后针对系统的不足，提出了另外一种不需要引出虚拟中点的反电势检测方法来实现对转子位置的检测，它能够提高电机低速和高速运行时的性能，拓宽直流无刷电机的调速范围。 |
| 8. | The structure and starting / generating integral working principle of dsem is firstly explained in this thesis . starting control mode and generating reason of starter / generator were introduced , and the back electromotive force ( emf ) of starting state and generating state was also analyzed
本文首先阐述了电励磁双凸极电机的结构与起动/发电一体化工作原理,介绍了起动/发电机的起动控制模式和发电机理,对起动/发电机起动状态和发电状态的反电势进行了分析。 |
| 9. | On the base of roundly analyzing and studying the running mode of the sensorless bldcm , we explain theories and realizable methods of detecting back electromotive force , phase verdict and phase compensation in detail . in order to improve the timing performance , the control strategy of this system is to use digital speed closed - loop control
在全面分析研究了无位置传感器无刷直流电动机运行方式的基础上，细致阐述了反电势过零检测、相位判断及相位补偿的原理及实现方法，并且为了在较宽的范围内提高bldcm的调速性能，采用了数字式转速闭环控制。 |
| 10. | Versa electricity the power the logic change mutually the method brushes the direct current electrical engineering to the control that have no , and with experiment result explained the versa electricity the power the logic change mutually method to it is a kind of that control method that have no brush the direct current electrical engineering valid with deserve expansion of method
摘要该文探讨了反电势逻辑换相法对无刷直流电机的控制，并以实验结果说明了反电势逻辑换相法对无刷直流电机的控制方法是一种有效和值得推广的方法。 |
