本文關(guān)鍵詞：基于模糊滑模變結(jié)構(gòu)的永磁同步電機矢量控制研究　出處：《安徽工程大學》2015年碩士論文　論文類型：學位論文

  更多相關(guān)文章： PMSM 模糊滑模變結(jié)構(gòu)控制 MATLAB/SIMULINK仿真 DSP SVPWM

【摘要】：永磁同步電機(Permanent Magnet Synchronous Motor—PMSM)結(jié)構(gòu)簡單、運行可靠、抗干擾力比較強、跟蹤誤差較小、超調(diào)量較小、響應快速,又具有體積小、效率高、力矩大魯棒信好等各種優(yōu)點,因此已經(jīng)在眾多伺服控制領(lǐng)域中得到了普遍的應用。本文的研究是基于模糊滑模變結(jié)構(gòu)控制的PMSM矢量控制。本文先從PMSM的數(shù)學模型出發(fā),介紹PMSM的數(shù)學模型以及其的控制理論和磁鏈跟蹤控制技術(shù)(SVPWM)。然后利用MATLAB/simulink仿真軟件,搭建永磁同步電機的矢量控制系統(tǒng)的仿真模型,并對雙閉環(huán)下永磁同步電機的矢量控制系統(tǒng)進行仿真實驗。目前永磁同步電機的矢量控制系統(tǒng)大都采用PID控制,但是永磁同步電機的矢量控制系統(tǒng)本身具有非線性、復雜性和時變性等特性,使得普通PID控制難以獲得較好的控制特性�；Ｗ兘Y(jié)構(gòu)控制存在抖振的危害,指數(shù)趨近律能夠有效的消弱抖振,卻不能去除抖振；在此基礎(chǔ)上,分析模糊控制的優(yōu)式,可以有效的消除抖振。為了提升PMSM伺服系統(tǒng)的控制特性,本文通過采用基于模糊滑模變結(jié)構(gòu)控制的速度控制方法。通過模糊滑模變結(jié)構(gòu)控制器對速度調(diào)節(jié)器進行優(yōu)化,此算法根據(jù)電機運行過程中速度的變化量,通過模糊控制規(guī)則對滑模變結(jié)構(gòu)控制中的兩個參數(shù)(k,ε)進行在線調(diào)節(jié),進而達到優(yōu)化的目的。同時通過對模糊滑模變結(jié)構(gòu)控制、滑模變結(jié)構(gòu)控制及普通PID控制的三種速度控制器的PMSM矢量控制進行仿真實驗,并對實驗結(jié)果進行細致分析和比較,結(jié)果表明基于模糊滑模變結(jié)構(gòu)控制的永磁同步電機矢量控制相對于基于普通PID控制器的及基于滑模變結(jié)構(gòu)控制的永磁同步電機矢量控制系統(tǒng)具有速度響應快、超調(diào)量少、速度波動小等優(yōu)點,其魯棒性及動靜態(tài)性能都相對優(yōu)于普通PID控制器的及基于滑模變結(jié)構(gòu)控制的永磁同步電機矢量控制。在相關(guān)控制原理和控制策略基礎(chǔ)上結(jié)合矢量控制系統(tǒng)的仿真實驗研究上,從硬件系統(tǒng)構(gòu)建的整體思路出發(fā),進行設(shè)計以數(shù)字信號處理器(DSP) TMS320LF2407A為核心的永磁同步電機矢量控制硬件系統(tǒng),并闡述TMS320LF2407A的最小系統(tǒng)及其外圍電路、主功率電路、檢測及保護電路等。以CCS 3.3 (Code Composer Studio 3.3)為軟件平臺,從永磁同步電機矢量控制系統(tǒng)的控制思路出發(fā),分別詳細對系統(tǒng)的主程序、中斷服務子程序以及控制算法進行設(shè)計與說明。在系統(tǒng)軟硬件的基礎(chǔ)之上對系統(tǒng)進行調(diào)試和測試。
[Abstract]:Permanent magnet synchronous motor (Permanent Magnet Synchronous Motor PMSM) has the advantages of simple structure, reliable operation, strong anti-interference capacity, the tracking error is small, small overshoot, fast response, and has the advantages of small size, high efficiency, large torque and good robust signal, so has been in many fields to get a servo control universal application. The research of this paper is based on the PMSM vector control of fuzzy sliding mode variable structure control. Starting from the mathematical model of PMSM, this paper introduces the mathematical model of PMSM and its control theory and magnetic chain tracking control technology (SVPWM). Then, the simulation model of permanent magnet synchronous motor vector control system is built by using MATLAB/simulink simulation software, and the simulation experiment of vector control system of double closed loop permanent magnet synchronous motor is carried out. At present, most of the vector control systems of permanent magnet synchronous motor are controlled by PID. However, the vector control system of PMSM is nonlinear, complex and time-varying, which makes it difficult for ordinary PID control to get better control characteristics. The sliding mode variable structure control has the danger of chattering. The exponential reaching law can effectively weaken chattering, but it can not eliminate chattering. Based on that, the analysis of fuzzy control's superiority can effectively eliminate chattering. In order to improve the control characteristics of the PMSM servo system, the speed control method based on fuzzy sliding mode variable structure control is adopted in this paper. A fuzzy sliding mode variable structure controller is used to optimize the speed controller. According to the speed change in the motor running process, the algorithm adjuster the two parameters of the sliding mode variable structure (k, e) online by fuzzy control rules, so as to achieve the purpose of optimization. At the same time through the simulation of PMSM vector of variable structure control, sliding mode variable structure control and conventional PID control in the three kinds of speed controller of fuzzy sliding mode control, and the experimental results are detailed analysis and comparison results show that the fuzzy sliding mode variable structure control of permanent magnet synchronous motor vector control compared with conventional PID controller and PMSM motor vector control system based on sliding mode variable structure control with fast response, less overshoot, speed advantages such as small fluctuations based on its robustness and dynamic performance are relatively better than the ordinary PID controller and based on permanent magnet synchronous motor vector control sliding mode variable structure control. The control principle and control strategy based on the combination of simulation and Experimental Research on vector control system, starting from the overall train of thought of construction of the hardware system, designed based on digital signal processor (DSP) TMS320LF2407A permanent magnet synchronous motor vector control hardware system as the core, and describes the TMS320LF2407A minimum system and peripheral circuit, power circuit, detection and protection circuit etc.. Taking CCS 3.3 (Code Composer Studio 3.3) as the software platform, starting from the control idea of PMSM vector control system, the main program, interrupt service subroutine and control algorithm of the system are designed and explained in detail. The system is debugged and tested on the basis of the software and hardware of the system.
【學位授予單位】：安徽工程大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM341

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