The Design and Research of Speed Control System of Permanent Magnet Synchronous Motor

　　The Design and Research of Speed Control System of Permanent Magnet Synchronous Motor
　　With the appearance of high-power switching devices, analog and digital ASIC and the development of control technology, microprocessors, microcontrollers and micro-computer have witnessed the growth of AC servo system. In the AC speed drive system, the direct torque control technique is to control the motor torque directly so that the motor can perform well both in dynamic aspect and static aspect, which is also a promising way among speed drive control method. This paper talks
http://www.999magnet.com/products/131-magnetic-lifter about the speed control system of permanent magnet synchronous motor, especially about the direct torque control of permanent magnet synchronous motor and its software and hardware designs based on TMS320LF2407A DSP control system. And some issues of control system are also analyzed.First of all, the basic structure of permanent magnet synchronous motor and its types and characteristics are introduced. And then the working principle of permanent magnet synchronous motor is analyzed, on the basis of which the mathematical model of permanent magnet synchronous motor is established. Giving the theoretical basis of direct torque control system, establishing the mathematical model of permanent magnet synchronous motor, this paper constructs direct torque control system, in which the estimation of stator linkage and torque, the selection of space voltage vector and the estimation of some related parameters are all involved. Consequentially, the design of software and hardware is finished on the basis of TMS320LF2407A DSP digital control system. Finally, with the help of MATLAB simulation software, the direct torque control system of permanent magnet synchronous motor is modeled and simulated, in which the construction of all simulation modules are described. The results show that the method of direct torque control is reasonable. 更多还原