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(zhuǎn)矩脈動的原理和摘要不足。
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(zhuǎn)矩脈動的抑制問題。
The pulsating torque components caused by stator current divergence from ideal conditions are studied 消除轉(zhuǎn)矩脈動可以通過對定子電流加入諧波的方式完成。
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(tǒng)中存在的轉(zhuǎn)矩脈動大、電磁干擾等問題,并分析了其原因。
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(zhuǎn)矩脈動,而對于這些應用場合,轉(zhuǎn)矩平滑通常是基本要求。
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(jīng)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(zhuǎn)矩大。
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(tǒng)的基本結(jié)構(gòu)出發(fā),對轉(zhuǎn)矩脈動及其補償方法進行了較為細致的分析。
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(zhuǎn)矩脈動的主要成分轉(zhuǎn)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(tǒng)的轉(zhuǎn)矩紋波由電磁轉(zhuǎn)矩的6n次諧波造成的結(jié)論。
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(shù)( 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(zhuǎn)矩脈動量低、直流電壓利用率高、開關(guān)損耗小、高速調(diào)速性能好等優(yōu)點,適用于高性能電機調(diào)速控制系統(tǒng)。
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(zhuǎn)矩脈動控制系統(tǒng)進行了改進,設計了一種模糊推理控制器,根據(jù)電機速度和負載轉(zhuǎn)矩的變化調(diào)整干擾觀測器的增益,保證了轉(zhuǎn)矩脈動控制系統(tǒng)的控制精度,并擴大了其運行范圍。