基于擴(kuò)展卡爾曼濾波器的交流異步電機(jī)轉(zhuǎn)速和轉(zhuǎn)子磁鏈觀測(cè)器
[Abstract]:Since the 21 century, with the rapid development of power electronic devices and computer technology, chips and many microelectronic devices have made great progress. The research and development of induction motor digital control system and sensorless speed sensor have been greatly promoted. Firstly, this paper summarizes the development of AC motor speed regulation by frequency conversion in recent years, and introduces several common speed sensorless developments and advantages and disadvantages. The mathematical models of three-phase asynchronous motor in different coordinate systems are introduced. The basic principle of rotor magnetic field orientation is described. This paper then introduces a speed sensorless vector control method for asynchronous motor based on backEMF. This paper describes the control theory of this method and introduces the method of setting the parameters of the external loop and the current inner loop regulator using the engineering design principle. Then a speed sensorless asynchronous motor vector control system based on BEMF algorithm is constructed in MATLAB/Simulink environment to verify the performance of BEMF and the simulation results are given. This paper mainly introduces another speed sensorless algorithm. This paper introduces the development, idea and algorithm flow of extended Kalman filter (EKF). Then a vector control system based on extended Kalman filter (EKF) is built by using MATLAB/Simulink. The simulation results verify the excellent performance of EKF and point out the shortcomings of EKF. The last part of the experiment is based on Renesas RX62T chip MCU system, through the CubeSuit software compilation environment, and then the EKF modular programming, through the software to achieve extended Kalman filter. The experimental results show that the EKF algorithm is feasible.
【學(xué)位授予單位】:北方工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TN713;TM343
【參考文獻(xiàn)】
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