本文選題：永磁同步電機 + 偏差耦合�。� 參考：《遼寧工程技術(shù)大學(xué)》2017年碩士論文

【摘要】：隨著科技不斷進步,僅僅對一臺電機的控制遠遠不能滿足現(xiàn)代工業(yè)發(fā)展的要求,而是要求控制多臺電機,一起同步運行。研究多電機同步控制系統(tǒng)對理論研究和實際生產(chǎn)具有重要的意義。本文以3臺永磁同步電機(permanent magnet synchronous motor,PMSM)速度同步控制系統(tǒng)為研究對象,提出了一種改進型偏差耦合速度補償結(jié)構(gòu)與非線性積分型滑�？刂撇呗韵嘟Y(jié)合的同步控制策略,主要包括以下幾個方面:首先介紹PMSM的結(jié)構(gòu)特點以及矢量控制方法,對PMSM進行數(shù)學(xué)建模,給出基于矢量控制的PMSM的調(diào)速系統(tǒng);通過分析幾種常見的多電機同步控制結(jié)構(gòu),分析各自特點。然后提出了改進型偏差耦合補償器,最后在Matlab/Simulink仿真平臺下進行了仿真對比分析,驗證改進型偏差耦合同步控制結(jié)構(gòu)的正確性;針對永磁同步電機調(diào)速系統(tǒng)設(shè)計出一種基于擴展負載轉(zhuǎn)矩觀測器的非線性積分型滑�？刂撇呗�。在滑模面加入非線性積分,改善PMSM的靜態(tài)與動態(tài)性能;通過擴展負載觀測器實時估計負載擾動值以補償q軸給定參考電流,提高其抗負載擾動的性能。最后對多電機同步控制系統(tǒng)進行了建模與仿真分析,并利用自動代碼生成技術(shù)對控制器核心算法進行了嵌入式C代碼自動生成。仿真結(jié)果表明采用改進型偏差耦合速度補償結(jié)構(gòu)與非線性積分型滑�？刂撇呗韵嘟Y(jié)合的同步控制系統(tǒng)具有更好的動靜態(tài)性能,各個電機之間速度同步誤差明顯減小,能夠在較短時間達到速度同步。
[Abstract]:With the development of science and technology, the control of a single motor is far from meeting the requirements of modern industrial development.The study of multi-motor synchronous control system is of great significance for theoretical research and practical production.In this paper, three permanent magnet synchronous motor (PMSM) permanent magnet synchronous motor (PMSM) speed control systems are studied. An improved offset coupled speed compensation structure and a nonlinear integrated sliding mode control strategy are proposed.The main contents are as follows: firstly, the structure characteristics and vector control method of PMSM are introduced, the mathematical model of PMSM is built, the speed regulating system based on PMSM is given, and several common synchronous control structures of multi-motor are analyzed.Analysis of their respective characteristics.Then, an improved offset coupling compensator is proposed. Finally, the correctness of the improved offset coupling synchronous control structure is verified by comparing and analyzing the simulation results under the Matlab/Simulink simulation platform.A nonlinear integrated sliding mode control strategy based on extended load torque observer is designed for permanent magnet synchronous motor (PMSM) speed control system.The nonlinear integral is added to the sliding mode surface to improve the static and dynamic performance of the PMSM, and the load disturbance value is estimated in real time by the extended load observer to compensate for the given reference current of the Q axis, and the anti-load disturbance performance is improved.Finally, the modeling and simulation of the multi-motor synchronous control system are carried out, and the embedded C code is generated automatically by using the automatic code generation technology to the core algorithm of the controller.The simulation results show that the synchronous control system with improved offset coupling speed compensation structure and nonlinear integral sliding mode control strategy has better dynamic and static performance, and the speed synchronization error among the motors is obviously reduced.Speed synchronization can be achieved in a short time.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273;TM341

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