Design And Realization On Permanent Magnet Synchronous Motor Vector Control System Based On The Model-Design Method Of DSP

A software development technique for DSP using a method called model-based design is studied aiming at the problem that a complex algorithm for DSP control system usually brings big difficulty, long development cycle and complicated register configuration when written by C language. This technique can greatly improve the efficiency of system development. The engineers do not need to master complex settings of the DSP register, so as to reduce the code error rate. And can realize the seamless integration of control algorithm from simulation model to real-time software. So it can speed up the development process of the system. In this paper, permanent magnet synchronous motor (PMSM) is used as control object using vector control algorithm. Then the process of system design is studied on the basis of the model-design method of DSP. The main contents are summarized as follows:1. The PMSM vector control system theory is studied. Combined the principle of coordinate transformation theory, the mathematical models of PMSM in the three different coordinate systems are given separately. Then the modeling and simulation of vector control are given in simulation environment.2. The development process of the system based on the model-design method of DSP is studied. The process of system software development is built by the method of MBD and every step is analyzed detailed. Take water lamp and unipolar & frequency multiplication SPWM generating for example, use the method of MBD for software design, and validate the efficiency and accuracy through experiments.3. The design and realization of PMSM vector control system is studied on the basis of the model-design method of DSP. In the Matlab environment, carry out the DSP control system with the method of MBD, including system architecture, modeling, and code generating, by using Embedded Coder toolbox and DSP integrated development environment Code Composer Stadiu3.3 (CCS3.3). Combined with the external hardware circuit, the current loop and speed loop are verified in Simulink environment. The final experimental results show that the automatic generation of code can run smoothly in the TMS320F2812 target board and the result is correct. At the same time, this method can improve the development efficiency of DSP.