| 1. | Simulation results showed that this control strategy can decrease the stator current anti improve the efficiency of the system
仿真结果表明永磁同步电动机直接转矩控制系统最大转矩电流比控制可以降低定子电流，减小损耗，从而提高系统效率。 |
| 2. | In this paper , the maximum torque per ample ( mtpa ) control in permanent magnet synchronous motor ( pmsm ) direct torque control ( dtc ) driving system was studied
摘要在永磁同步电动机直接转矩控制和最大转矩电流比控制理论基础上，研究了永磁同步电动机直接转矩控制驱动系统最大转矩电流比控制的实现。 |
| 3. | The four - times - frequency design of feed - back signal of ac servomotor and the design of speed examination arithmetic of pmsm are completed and the linearity modulation of torque electric current is realized
完成了交流伺服电动机反馈信号的四倍频电路、交流永磁同步电动机速度检测设计，实现了转矩电流的线性调节。 |
| 4. | Based on artificial neutral network control theory , a mimo neutral network pid speed regulator realizing the maximum torque with minimum current is conformed for a pmsm drive system
本论文在人工神经网络控制理论的基础上，针对永磁同步电动机矢量控制系统，构造实现最大转矩电流控制的mimo神经网络pid速度控制器。 |
| 5. | The paper lucubrated the control theory of induction motor ' s vector transform and the method of calculating speed by induction motor ' s torque current weight , based on which , the paper designed a close - loop speed - sensorless vector control vwf system and realized the system in matlab / simulink
本文深入研究了感应电动机矢量变换的控制理论和利用电动机转矩电流分量进行速度推算的方法。在此基础上设计了一个闭环的无速度传感器矢量控制变频调速系统。 |
| 6. | Motion control is a comprehensive subject . modern ac drive is a important embranchment in the field of motion control . however , it is difficult to rea1ize high - performance ac drive systems because induction motors are a kind of strongly - coupled nonlinear system with many variables and the torque is not easy to control . with vector control technology decoupling and torque control of ac motor are solved . the basic idea of vector control is that three - phase system is equiva1ent to two - phase system by coordinate transformation and it realizes the decoupling between field current and torque current of the stator in order to control the flux and current respectively , thus induction motor can be considered dc motor and high performance is achieved easily . with the progress of electric and electronic technology and the development of computer , high - integrated special modules and high - precision digital signal processor ( dsp ) are applied to ac drive so that vector control has been developed rapidly
但是高性能的交流调速系统实现很困难，这是因为交流电机是多变量、强耦合的非线性系统，不易实现高性能转矩控制。矢量控制技术则解决了交流电机解耦与转矩控制问题，其基本思路? ?应用坐标变换将三相等效为二相，实现定子励磁电流分量与转矩电流分量之间的解耦，达到对交流电机磁链与电流分别控制的目的，交流电机等效为直流电机实现高性能调速。随着电力电子技术的进步，计算机技术飞跃发展，高度集成的专用模块和高精度的数字信号处理器应用于交流传动系统中，促进矢量控制迅猛发展，日趋成熟。 |
| 7. | Furthermore , this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor , torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode , 180 conduction mode and self - synchronous svpwm mode respectively . the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles
对准正弦波反电动势无刷直流电动机在120导通方式、 180导通方式和自同步svpwm三种控制方式下的转矩脉动系数、转矩电流比等方面进行了全面的分析与比较，仿真研究和实验结果表明，当反电动势的平顶宽度小于107电角时，采用自同步svpwm控制方法可以在不损失转矩电流比的基础上，更有效地抑制电磁转矩脉动。 |
| 8. | By applying the method composed of theory analysis , simulation and test verification , some researches have been done on unload characteristic , torque - current characteristic , revolving speed - voltage characteristic and mechanism characteristic of the motor system . meanwhile , various control modes of the system are analyzed . all these researches provide some references for the motor ’ s application
采用理论分析、仿真模拟、试验验证相结合的方法,分别研究了双凸极电机的空载特性、转矩电流特性、转速电压特性、机械特性,并对各种控制方式进行了分析、比较,为在实践中更好地应用双凸极电机提供了一定的依据。 |
| 9. | Space vector control according as ac induction motor two - axis theory speed separates the stator current into two components . one is the torque component ; the other is the flux component . a structure similar a dc machine structure where torque and field can be controlled independently is given
矢量变换控制是以交流电动机的双轴理论为依据，在同步旋转坐标系中把定子电流矢量分解为两个分量：一个分量与转子磁链矢量重合，称为励磁电流分量；另一个分量与转子磁链矢量垂直，称为转矩电流分量。 |
