發(fā)布時間：2018-05-04 03:12

  本文選題：感應(yīng)電機 + 非奇異終端滑模��； 參考：《太原科技大學(xué)》2017年碩士論文

【摘要】：感應(yīng)電機作為重要的動力裝置已被大量應(yīng)用于工業(yè)生產(chǎn)和日常生活中,隨著社會的發(fā)展和科技水平的提高,人們對電機控制系統(tǒng)有著愈加苛刻的要求。但由于感應(yīng)電機本身多變量、強耦合的特性和復(fù)雜的外部工作環(huán)境等不利因素,導(dǎo)致傳統(tǒng)控制方法難以滿足控制要求�；？刂埔蚱漪敯粜詮姷葍�(yōu)點,在交流調(diào)速系統(tǒng)中有著巨大的應(yīng)用空間,本文在終端滑�？刂评碚摶A(chǔ)上,針對其存在的問題和不足提出改進(jìn)方案,分別設(shè)計了速度觀測器和速度控制器,以獲得對感應(yīng)電機更加優(yōu)良的控制效果。具體研究內(nèi)容如下:首先,為了實現(xiàn)感應(yīng)電機無速度傳感器控制,設(shè)計了定子電流觀測器,采用非奇異快速終端滑模方法減小了誤差變量收斂時間和穩(wěn)態(tài)誤差,然后通過磁鏈和轉(zhuǎn)速計算環(huán)節(jié)得到磁鏈和轉(zhuǎn)速的觀測值。仿真結(jié)果驗證了該觀測器的有效性。其次,針對無傳感器感應(yīng)電機矢量控制系統(tǒng),研究了一種全局非奇異終端滑�？刂破�,解決了傳統(tǒng)滑模在系統(tǒng)狀態(tài)到達(dá)切換面之前魯棒性弱的問題,同時保證了系統(tǒng)能在有限時間內(nèi)收斂,增強了系統(tǒng)抗干擾能力。最后,以TMS320F28335型號的DSP為核心處理器,搭建了包括電源電路、驅(qū)動電路、IPM、采樣電路、信號調(diào)理電路的硬件實驗平臺,并在CCS3.3開發(fā)環(huán)境下設(shè)計編寫了包括電流控制、速度控制、坐標(biāo)變換、SVPWM等矢量控制技術(shù)的源程序,將本文設(shè)計的終端滑�？刂破魈娲鷤鹘y(tǒng)的速度環(huán)PI控制器,在此控制實驗平臺上進(jìn)行實驗驗證,實驗結(jié)果證明了理論研究的正確性和有效性。
[Abstract]:Induction motor as an important power device has been widely used in industrial production and daily life. With the development of society and the improvement of science and technology, people have more and more stringent requirements for motor control system. However, the traditional control methods are difficult to meet the control requirements due to the disadvantages of the induction motor itself, such as multivariable, strong coupling characteristics and complex external working environment. Sliding mode control has great application space in AC speed regulation system because of its strong robustness and so on. Based on the theory of terminal sliding mode control, this paper puts forward an improved scheme aiming at its existing problems and shortcomings. A speed observer and a speed controller are designed to obtain better control effect on induction motor. The specific research contents are as follows: firstly, in order to realize sensorless control of induction motor, stator current observer is designed. The convergence time of error variable and steady-state error are reduced by using nonsingular fast terminal sliding mode method. Then the flux and rotational speed are measured by flux and speed calculation. Simulation results verify the effectiveness of the observer. Secondly, for the sensorless induction motor vector control system, a global nonsingular terminal sliding mode controller is studied, which solves the problem of weak robustness of the traditional sliding mode before the system state reaches the switching surface. At the same time, the system can converge in limited time and enhance the anti-interference ability of the system. Finally, a hardware experimental platform including power supply circuit, driving circuit, sampling circuit and signal conditioning circuit is built based on TMS320F28335 model DSP as the core processor. In the CCS3.3 development environment, the design includes current control and speed control. In the source program of vector control technology such as coordinate transformation and SVPWM, the terminal sliding mode controller designed in this paper is replaced by the traditional speed loop Pi controller, and the experimental verification is carried out on this control experimental platform. The experimental results show that the theoretical research is correct and effective.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM346

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本文編號：1841327