發(fā)布時(shí)間：2018-05-04 20:02

  本文選題：永磁同步電機(jī) + SVPWM�。� 參考：《浙江理工大學(xué)》2017年碩士論文

【摘要】：隨著永磁交流伺服技術(shù)突飛猛進(jìn)的發(fā)展,運(yùn)用永磁同步電機(jī)的場(chǎng)合逐漸增多,利用永磁同步電機(jī)的系統(tǒng)會(huì)更加復(fù)雜。這就要求伺服系統(tǒng)有更好的魯棒性和速度跟蹤性能�；Ｗ兘Y(jié)構(gòu)控制理論逐漸延伸到電力傳動(dòng)控制領(lǐng)域,因其響應(yīng)速度快,設(shè)計(jì)簡(jiǎn)單,同時(shí)魯棒性較強(qiáng)。但是由于操作過(guò)程中頻繁的開(kāi)關(guān)控制會(huì)導(dǎo)致抖振現(xiàn)象,這對(duì)實(shí)際工程來(lái)說(shuō)是一個(gè)嚴(yán)峻的問(wèn)題。發(fā)生抖振的原因在于執(zhí)行機(jī)構(gòu)與實(shí)際控制器之間無(wú)法進(jìn)行高頻切換,且系統(tǒng)存在穩(wěn)態(tài)誤差,嚴(yán)重時(shí)高頻振動(dòng)會(huì)引起系統(tǒng)元件損壞。本文在永磁同步電動(dòng)機(jī)中增加了二階滑模變結(jié)構(gòu)控制,并對(duì)其進(jìn)行全面深入探究,克服了外界干擾和參數(shù)變化的影響,增強(qiáng)了伺服系統(tǒng)的魯棒性和動(dòng)態(tài)性能。本文首先簡(jiǎn)述了電壓空間矢量脈沖寬度調(diào)制(SVPWM)的基本概念和調(diào)制技術(shù)原理,并且具體講述了SVPWM算法的實(shí)現(xiàn)。經(jīng)典的SPWM控制主要著眼于使變壓變頻器的輸出電壓盡量接近正弦波,并未顧及輸出電流的波形。然而交流電動(dòng)機(jī)需要輸入三相正弦電流的,從而產(chǎn)生電磁轉(zhuǎn)矩。因此,永磁同步電機(jī)通常采用SVPWM控制技術(shù)。本文選取id=0轉(zhuǎn)子磁場(chǎng)定向控制方法,這種控制方法系統(tǒng)簡(jiǎn)單,電流利用率高,轉(zhuǎn)矩定性好,且調(diào)速范圍廣泛。轉(zhuǎn)子磁場(chǎng)定向控制能夠解耦定子電流中的兩個(gè)分量,使得永磁同步電機(jī)獲得類(lèi)似與直流電機(jī)的性能以及控制方式。在傳統(tǒng)滑模的基礎(chǔ)上,介紹了二階滑�？刂频幕驹砗退惴�,提出了一種永磁同步電機(jī)的二階滑模算法,利用Matlab/simulink軟件搭建了一種基于電壓空間矢量脈沖寬度調(diào)制的的永磁同步電動(dòng)機(jī)二階滑�？刂葡到y(tǒng)并進(jìn)行了仿真。仿真波形和數(shù)據(jù)表明:基于二階滑模算法的永磁同步電機(jī)控制方法能夠快速調(diào)整負(fù)載變化帶來(lái)的速度擾動(dòng),從而提高了永磁同步電機(jī)伺服系統(tǒng)的動(dòng)態(tài)性能;二階滑�？刂品椒ㄔ诒３謧鹘y(tǒng)滑模的結(jié)構(gòu)簡(jiǎn)單和魯棒性較強(qiáng)優(yōu)勢(shì)的同時(shí),不會(huì)給系統(tǒng)帶來(lái)抖振的現(xiàn)象。由此可見(jiàn),基于二階滑模算法的永磁同步電機(jī)伺服系統(tǒng)具有較好的動(dòng)態(tài)性能、較強(qiáng)的魯棒性和抗干擾性。最后,設(shè)計(jì)了基于型號(hào)為T(mén)MS320F28035的DSP芯片的硬件系統(tǒng)。
[Abstract]:With the rapid development of permanent magnet AC servo technology, the applications of permanent magnet synchronous motor (PMSM) are increasing, and the system of PMSM will be more complex. This requires the servo system to have better robustness and speed tracking performance. Sliding mode variable structure control theory is gradually extended to the field of power transmission control, because of its fast response speed, simple design and strong robustness. However, the frequent switching control during operation will lead to buffeting, which is a severe problem for practical engineering. The reason of buffeting is that there is no high frequency switching between the actuator and the actual controller, and there is a steady state error in the system. When the vibration is serious, the high frequency vibration will lead to the damage of the system components. In this paper, the second-order sliding mode variable structure control is added to PMSM, and it is thoroughly studied, which overcomes the influence of external disturbance and parameter change, and enhances the robustness and dynamic performance of servo system. In this paper, the basic concept and principle of voltage space vector pulse width modulation (SVPWM) are introduced, and the implementation of SVPWM algorithm is described in detail. The classical SPWM control mainly focuses on making the output voltage of the variable-voltage converter as close as possible to sine wave without considering the waveform of output current. However, AC motors need to input three-phase sinusoidal current, thus producing electromagnetic torque. Therefore, permanent magnet synchronous motor (PMSM) usually adopts SVPWM control technology. In this paper, the id=0 rotor field oriented control method is selected, which is simple in system, high in current utilization rate, good in torque quality and wide in speed range. Rotor flux oriented control can decouple two components of stator current, which makes permanent magnet synchronous motor obtain the same performance and control mode as DC motor. Based on the traditional sliding mode, the basic principle and algorithm of second-order sliding mode control are introduced, and a second-order sliding mode algorithm for permanent magnet synchronous motor is proposed. The second order sliding mode control system of permanent magnet synchronous motor based on voltage space vector pulse width modulation is built by using Matlab/simulink software and simulated. The simulation waveform and data show that the PMSM control method based on the second-order sliding mode algorithm can quickly adjust the speed disturbance caused by the load change, thus improving the dynamic performance of PMSM servo system. The second-order sliding mode control method does not bring buffeting phenomenon to the system while keeping the simple structure and strong robustness of the traditional sliding mode control method. Thus, the PMSM servo system based on second-order sliding mode algorithm has better dynamic performance, strong robustness and anti-interference. Finally, the hardware system of DSP chip based on TMS320F28035 is designed.
【學(xué)位授予單位】：浙江理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TP273;TM341

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 紀(jì)科輝;周勇;魯文其;;一種新型永磁同步電機(jī)高階滑模轉(zhuǎn)速觀測(cè)器的研究[J];機(jī)電工程;2016年09期

2 徐莉;;直流電機(jī)控制方法的Matlab仿真研究[J];現(xiàn)代電子技術(shù);2016年03期

3 辛騰達(dá);范惠林;閆琳;;滑模變結(jié)構(gòu)制導(dǎo)律的抖振問(wèn)題研究[J];航空兵器;2015年02期

4 于寅虎;;電機(jī)控制技術(shù)的最新進(jìn)步與發(fā)展[J];電子產(chǎn)品世界;2014年09期

5 許波;朱q，

本文編號(hào)：1844436