异步电动机矢量控制调速系统毕业论文中英文资料对照外文中英文翻译文献综述.doc

异步电动机矢量控制调速系统 毕业论文中英文资料对照外文翻译文献综述 The Design of the Vector Control System of Asynchronous Motor Abstract: Among various modes of the asynchronous motor speed control, vector control has the advantages of fast response, stability, transmission of high-performance and wide speed range. For the need of the asynchronous motor speed control, the design uses 89C196 as the controller, and introduces the designs of hardware and software in details. The Design is completed effectively, with good performance simple structure and good prospects of development. Keywords: Asynchronous motor, 89C196, Vector control 1. Introduction AC asynchronous motor is a higher order, multi-variable, non-linear, and strong coupling object, using the concept of parameters reconstruction and state reconstruction of modern control theory to achieve decoupling between the excitation component of the AC motor stator current and the torque component, and the control process of AC motor is equivalent to the control process of DC motor, the dynamic performance of AC speed regulation system obtaining notable improvement, thus makes DC speed replacing AC speed possible finally. The current governor of the higher production process has been more use of Frequency Control devices with vector-control. 2. Vector Control With the criterion of producing consistent rotating magneto motive force, the stator AC current,, by3S/2S conversion in the three-phase coordinate system, can be equivalent to AC current ，， in two-phase static coordinate system, through vector rotation transformation of the re-orientation of the rotor magnetic field, Equivalent to a synchronous rotation coordinates of the DC current ，. When observers at core coordinates with the rotation together, AC machine becomes DC machine. Of these, the AC induction motor rotor total flux , it has become the equivalent of the DC motor flux, windings equivalent to the excitation windings of DC motor , equivalent to the excitation current, windings equiva