| The related problem of speed sensor-less vector control algorithm for asynchronous motor is researched. In this thesis, the main contents are as follows:(1) The mathematical model of asynchronous motor is analyzed. It contains the model of asynchronous motor under plane triaxial coordinates,the plane rectangular coordinate system and the synchronous rotating coordinate system.(2) Basic principles of speed sensor-less vector control system are discussed. Traditional voltage model, adaptive strategy of voltage model and current model, adaptive strategy of stator model and current model are analyzed and simulated. Their results are compared to each other.(3) The basic principle of full order observer is introduced. Full order nonlinear speed observer for asynchronous motor vector control is designed. Stability proof and the result of the experiment are given.(4) Parameter identification method of asynchronous motor is discussed, and is verified experimentally. |
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