【作者】 刘红星；

【导师】 辛小南；

【作者基本信息】 郑州大学 ， 电工理论与新技术， 2007， 硕士

【摘要】 本论文的研究目标是异步电机的矢量控制系统以及将自适应控制应用于矢量控制系统。论文的重点是矢量控制方法、转子磁链的观测以及转速的自适应估计。本文从介绍近年来调速技术的0发展、异步电机的调速方法以及矢量控制的思想开始，分别阐述了异步电机的数学模型及坐标矢量变换，异步电机的可控可观性等，之后对用于异步电机调速的矢量控制方法进行分析比较，对矢量控制系统的各个环节进行了研究并探讨了磁场定向方式的问题。对磁链和转矩闭环的矢量控制系统中关键的转子磁链观测问题进行了研究，提出了一种不依赖于转子电阻的转子磁链的自适应辨识方法。对目前流行的无速度传感器矢量控制系统进行探讨，提出了一种转速的在线自适应估计方法。论文最后对本文介绍的矢量控制系统进行了仿真研究，给出了仿真结果，并对研究结果进行了总结，提出了本文的进一步研究目标。更多还原

【Abstract】 This dissertation is the research of the vector control system of asynchronous machine and the research of applying the adaptive control to the vector control system .It was vector control means, rotor flux’ observation and adaptive estimation ofrotor speed as well that this dissertation emphases.First of all, introducing timing technical develop in recent years, the mode of speed regulation and vector control ’idea, this dissertation discussed the math model, co-ordinate vector change and asynchronous machine ’ controllability and observability. Next, the mode of vector control and every part in vector control system were studied and the mode of flux-oriented was discussed. The focus rotor flux observation problem in directness vector control system with torque internal ring, rotation speed and flux closed loop was studied. A means of rotor flux’ adaptation distinguish independent of rotor resistance was put forward. Making an approach to popular without speed sensor vector control system for the moment and putting forward an adaptive estimation means on-line about rotor speed.At the end of this dissertation, the study of simulation was applied to vector control system that this paper discussed and the simulation outcome was given out. Conclusion was made for research work and the further aim of research work was put forward.更多还原