This equipment adopts a thyristor excitation DC generator-motor set with a field weakening regulation device working in step with loading.
该设备采用可控硅励磁直流发电机——直流电动机系统，具有取决于负载的弱磁调节装置。因此操作起来极为方便。
The torque characteristics, power characteristic and field weakening characteristic of the SPM motor have been analyzed in details by the phasor method.
采用永磁同步电机d、q坐标系下的相量分析法，研究不同弱磁率对电机功率特性、转矩特性和弱磁特性的影响。
In the field weakening region, the torque capacity decreases with the increasing frequency, torque output capacity depends largely on the field-weakening control strategy.
在弱磁区，转矩能力随着频率的增加而减小，电机转矩输出能力很大程度上取决于弱磁控制策略。
The speed adjusting system with field weakening with voltage feedforward, current closed negative feedback and speed closed loop was designed by adopting digital signal processor (DSP).
采用数字信号处理器（DSP）控制器，设计了具有电压前馈和电流截止负反馈的转速闭环弱磁调速系统。
This paper described the principle of field weakening, analysed the main reason of over-load when field weakening, and gave the countermeasures to prevent over-loading when field weakening.
简要地说明磁场削弱的原理及磁场削弱时产生过载危害的主要原因，提出了防止磁场削弱时过载的措施。
The proposed algorithm guarantees producing the maximum torque over the entire field weakening region and ensures the torque and speed-rising capability under imperfect field orientation c.
采用该方法能够使电机在整个弱磁阶段输出转矩保持最大，并确保非理想磁场定向条件下的转矩和升速性能。
The weakening extent of the transmissive ability is related to electron energy and field size.
电子线穿透能力的减弱程度与电子线能量和射野大小有关；
Finally, the environment on crime prevention to crime field negates the formation of environmental crime is divided into time, space and crime control mechanisms weakening the three areas.
最后，从对犯罪环境的预防来阻却犯罪场的形成，犯罪环境分为时间、空间和犯罪控制机制弱化三个方面。
Simulation results show that the overall of this method is the enhancement of field-weakening performance of drive and a reduction in torque ripple compared the conventional method.
仿真结果表明，与传统的弱磁方法相比，该方法最大的优点是能够提高弱磁调速范围，减少了转矩脉动。
Proposed a vague location control method to launch the rotor, which is an effective solution to the problem of weakening magnetic field caused by traditional DC torque methods.
提出了一种基于位置模糊控制策略的启动方法，有效解决了传统直流转矩定位方法的转子退磁问题。
For square wave motor, the thesis set forth equivalent weakening magnet field control way by use of transformer electric potential to...
对方波电机，文中提出了一种新型的用变压器电势抵消激磁电势而实现的等效弱磁控制方法，并作了理论分析与实验验证。
For square wave motor, the thesis set forth equivalent weakening magnet field control way by use of transformer electric potential to...
对方波电机，文中提出了一种新型的用变压器电势抵消激磁电势而实现的等效弱磁控制方法，并作了理论分析与实验验证。
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