Study Of The Direct Torque Control In Permanent Magnet Synchronous Motor Based On μC/OS-Ⅱ

In this thesis the author makes a profound and broad study of the theory of the direct torque control in the Permanent Magnet Synchronous Motor (PMSM). In order to improve low speed performance, a new tactic of Vector Subdivision Direct Torque Control based on space vector modulation is proposed. Low performance of DTC system is improved. Simulation results show that this method can hold dynamic performance of the basic DTC, improve the torque at low speed and weaken the torque ripple. Furthermore, the method is very easy to realize and have improved accuracy of the observation.In addition, the paper presents the advantage of using the real time embedded operating system μC/OS- II in a micro processor system. Also, the author has paid more attention to the configuration and kernel code of μC/OS- II. Combining the characteristic of DSP and μC/OS- II, the paper replants the real time embedded operating system μC/OS- II in TMS320LF2407 successfully. Some detailed codes of several files in replanting have been provided in the paper.At last, the most important purpose is to achieve a new system which adopts the DSP as hardware plat and μC/OS- real-time embedded operating system as software plat. Some modules of hardware are designed in the paper. In the part of software, some new controller arithmetic is introduced. The real time software is compiled by C language and assembly language. The research of digital realization and the software design are carried out deeply.