例句與造句

1. These are justified by simulation . 5 . the principle of compensating pulsating torque is proposed
   分析了諧波加入法消除轉矩脈動的原理和摘要不足。
2. So the compensation of pulsating torque is very importance for the application of pmsms
   因此，對無刷直流電動機的應用，必須考慮其轉矩脈動的抑制問題。
3. The pulsating torque components caused by stator current divergence from ideal conditions are studied
   消除轉矩脈動可以通過對定子電流加入諧波的方式完成。
4. At the meantime , there are the problems about the pulsating torque output and emi existed in the controller and we analyze the causes
   同時，指出了該系統中存在的轉矩脈動大、電磁干擾等問題，并分析了其原因。
5. The main disadvantage of pmsms is its pulsating torque . torque smoothness is an essential requirement in a wide range of high - performance motion control applications
   然而，無刷直流電動機具有較大的轉矩脈動，而對于這些應用場合，轉矩平滑通常是基本要求。
6. It's difficult to find pulsating torque in a sentence. 用pulsating torque造句挺難的
7. Although dtc have made fast progress in recent year , it has disadvantage in the theory and performance that not good at low speed operation and having serious pulsating torque
   近年來dtc的研究雖然已經取得了很大的進展，但是它在理論和實踐上還不夠成熟，如低速性能差、脈動轉矩大。
8. This paper addresses on the problem of the compensating techniques of pulsating torque in pmsms . the techniques of pulsating torque minimization based on the improvement of control schemes are focused on
   本文從無刷直流電動機及其控制系統的基本結構出發，對轉矩脈動及其補償方法進行了較為細致的分析。
9. 3 . with fourier decomposition , the main component of pulsating torque , torque ripple is studied . it can be determined that torque ripple is caused by harmonic order 6n under the usual common conditions
   3 、對造成轉矩脈動的主要成分轉矩紋波進行諧波分析，得出在一般假設情況下，無刷直流電動機系統的轉矩紋波由電磁轉矩的6n次諧波造成的結論。
10. The inverters based on space - vector pwm technique have many good qualities , such as less pulsating torque , higher usage of dc bus voltage , less switching loss , better high - speed regulation performance , so it is applicable for the high - performance motor control system
    電壓空間矢量pwm技術( svpwm )將逆變器和電動機視為一體，由之控制的變頻器具有輸出轉矩脈動量低、直流電壓利用率高、開關損耗小、高速調速性能好等優點，適用于高性能電機調速控制系統。
11. 9 . a fuzzy reasoning controller is designed to improve the performance of the mentioned disturbance observer . as the motor speed and load torque varying , the parameter of the disturbance observer can be changed by the fuzzy controller based on experiences . the pulsating torque can be compensated more strictly in a extended range
    9 、對基于干擾觀測器的轉矩脈動控制系統進行了改進，設計了一種模糊推理控制器，根據電機速度和負載轉矩的變化調整干擾觀測器的增益，保證了轉矩脈動控制系統的控制精度，并擴大了其運行范圍。
12. Abstract in this paper the phase commutation and current curves of brushless motor variable - speed system are studied . according to the results that the pulsating torque is influenced greatly by the ratio of the direct current supply voltage and the electromotive force of the motor , an approach to reduce the pulsating torque is presented
    本文通過對無換向器電動機模型的換相過程和電流波形的研究，得到換相轉矩波動受直流電源電壓和電動機電動勢幅值的比（ u / e ）的影響較大的結論并獲取了最佳u / e ，同時通過仿真研究了電流波形，提出了減小轉矩脈動的控制策略。
13. 8 . a pulsating torque minimization approach based on disturbance observer is proposed . the new disturbance observer is designed to observe the unknown torque disturbance caused by the torque ripple , the varying of the motor parameters , the changing of load torque and the not ideal performance of the inverter
    該系統將負載轉矩、轉矩紋波以及由電機參數的變化引起的轉矩干擾作為系統干擾，用干擾觀測器進行觀測，以此為基礎對轉矩脈動進行補償，實現對轉矩脈動的抑制。