Speed ​​sensorless Motor Speed Control System Of The Dsp-based Study

Along with the rapid development of power electronics technology, computer technology and automatic control technology, Namely the electric transmission technology is being faced with a history revolution, it has become development trend that AC transferring speed replaces direct current speed and computer digital control technology replaces the analog control technology . In the first chapter, the development and application of the technology of transducer speed regulation system are introduced including the power electronics microprocessor. And The aim of research and central work is put forward.speed sensorless vector control system developed for the purpose that speed sensor may can not be installed in some environment and reduce the price of equipment. The system still depend on the FOC technology except that the method of getting speed information of the motor. In the second part, introduce the basic theory of the FOC vector control system at first. And then, structure the speed identification model basing on the model Reference Adaptive theory and prove that the system can be observed,be controlled and be stable depending on the POPOV theory. It is the theory basic of the next step that simulate the system.the thesis sets up the corresponding artificial model of system according to the above-mentioned basic theories of the speed sensorless vector control system and the MRAS theory. And proving its working performance through Simulink emulation of Matlab. According to the space vector pulse width modulation technology principle, constitute SVPWM emulation model and write out some code of S-Function. At the same time, it carries on emulation to analyse scheme which is used to estimate speed. It proves that the model basing on the MRAS has high accuracy of speed calculating and finer ability of stable and dynamic. It can be applied on the industry.The fourth part, the designation of hardware platform for motor control is described in main circuits and control circuits. It include characteristics of intelligent power module and the chip TMS320DSP2812 and it evaluating board, the deriving circuits, the connecting circuits for inputs and outputs and some circuits chart are wrote out. the program block diagram of the software some DSP program codes are given on the base of above.