發(fā)布時(shí)間：2018-06-04 03:46

  本文選題：異步電機(jī) + 灰色滑模��； 參考：《河北工程大學(xué)》2015年碩士論文

【摘要】：上世紀(jì)中葉以來(lái),隨著功率器件的發(fā)展與更新?lián)Q代,使得交流裝置向著現(xiàn)代化、智能化的方向邁進(jìn)。尤其是伴隨著矢量控制理論的提出,交流電機(jī)取代直流電機(jī)已成為歷史發(fā)展的必然。而基于矢量控制的異步電機(jī)在調(diào)速性能、響應(yīng)時(shí)間和調(diào)速范圍上具有無(wú)可比擬的優(yōu)勢(shì),故一直是國(guó)內(nèi)外學(xué)者研究的重點(diǎn)。本文主要針對(duì)異步電機(jī)矢量控制系統(tǒng)展開分析與研究,以TI公司生產(chǎn)的TMS320F28335 DSP為控制核心,進(jìn)行系統(tǒng)的軟、硬件的搭建,并充分利用空間電壓矢量脈寬調(diào)制(SVPWM)技術(shù)對(duì)電磁磁場(chǎng)圓形軌跡進(jìn)行跟蹤,更好的實(shí)現(xiàn)了對(duì)采用矢量控制的異步電機(jī)的性能控制。本文首先介紹了研究的背景和現(xiàn)實(shí)意義,并對(duì)異步電機(jī)控制技術(shù)和矢量理論的發(fā)展進(jìn)行了概括性介紹;然后,為了更直觀明了地了解矢量理論把異步電機(jī)對(duì)定子電流矢量的控制轉(zhuǎn)換為對(duì)兩相旋轉(zhuǎn)坐標(biāo)系的電流控制的具體實(shí)現(xiàn)過(guò)程,運(yùn)用數(shù)學(xué)知識(shí)對(duì)整個(gè)變換過(guò)程進(jìn)行詳細(xì)的數(shù)學(xué)公式推導(dǎo),并在此基礎(chǔ)上提出基于灰色滑模變結(jié)構(gòu)控制算法的速度調(diào)節(jié)器,再通過(guò)對(duì)整個(gè)系統(tǒng)的建模仿真,驗(yàn)證了灰色滑模變結(jié)構(gòu)控制策略在提高系統(tǒng)抗擾動(dòng)等方面具有明顯優(yōu)勢(shì);然后完成對(duì)以DSP28335為核心控制芯片的異步電機(jī)矢量控制實(shí)驗(yàn)平臺(tái)的搭建,主要設(shè)計(jì)的硬件電路包含主電路、控制電路、驅(qū)動(dòng)電路、檢測(cè)電路,并在此基礎(chǔ)上給出了軟件實(shí)現(xiàn)過(guò)程;最后,結(jié)合SVPWM技術(shù)進(jìn)行控制算法實(shí)驗(yàn),試驗(yàn)結(jié)果表明了該控制系統(tǒng)可以可靠有效的完成異步電機(jī)變頻調(diào)速。
[Abstract]:Since the middle of the last century, with the development and renewal of power devices, AC devices have moved towards the direction of modernization and intelligence. Especially with the development of vector control theory, it has become a historical necessity for AC motor to replace DC motor. The induction motor based on vector control has unparalleled advantages in speed regulation performance, response time and speed range, so it has always been the focus of scholars at home and abroad. This paper mainly focuses on the analysis and research of the vector control system of asynchronous motor, taking the TMS320F28335 DSP produced by TI company as the control core to build the software and hardware of the system. And the space voltage vector pulse width modulation (SVPWM) technique is fully used to track the circular track of the electromagnetic field, which better realizes the performance control of the asynchronous motor with vector control. This paper first introduces the background and practical significance of the research, and introduces the development of asynchronous motor control technology and vector theory. In order to understand more intuitively the realization process of vector theory, the control of stator current vector of asynchronous motor is transformed into the current control of two-phase rotating coordinate system. The mathematical formula of the whole transformation process is deduced by using mathematical knowledge. On this basis, a speed regulator based on the grey sliding mode variable structure control algorithm is proposed, and then the whole system is modeled and simulated. It is verified that the grey sliding mode variable structure control strategy has obvious advantages in improving the anti-disturbance of the system, and then the experimental platform of vector control of asynchronous motor based on DSP28335 is built. The main hardware circuit includes main circuit, control circuit, drive circuit, detection circuit, and on the basis of this, the software realization process is given. Finally, the control algorithm experiment is carried out with SVPWM technology. The experimental results show that the control system can realize the frequency conversion speed regulation of asynchronous motor reliably and effectively.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM343

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本文編號(hào)：1975749