| Along with the fast development of the motor production technology, power electronics and microelectronics, servo control system has been used in the field of industrial control and household appliances widely, and AC servo control system has become a development trend of servo control system. Therefore, to study the full-digital permanent magnetic synchronous AC servo control system whose executive motor is permanent magnetic synchronous motor, core component is DSP, and control strategy is vector control has an particularly important practical significance.The mathematical model of the permanent magnet synchronous motor is built firstly in this paper, the theory of vector control on permanent magnet synchronous motor is studied further deeply. Aiming at the shortcomings of conventional vector control, a novel vector control system based on space-voltage vector pulse width modulation (SVPWM) is proposed in this paper. The SVPWM can help the inverter to realize continuous voltage vector modulation, decrease the current harmonic component, and restrain the torque ripples, and the DC bus voltage utilization can be improved and the speed range of the system can be expanded.Based on the MATLAB, a simulation model of the vector control system for the permament synchronous motor is built, furthermore, a lot of simulation researches have been done based on these models. At the same time, a control system with the digital signal processor TMS320F2812 produced in TI Company used as kernel control chip is designed. Based on the hardware circuit, the software is programmed with C-language. Dual close loop vector control with feedback of speed and current are realized. The flow charts of main program and Timer interrupt service routines are given. The simulation and the experiment results show that the motor can quickly response to and track the given speed , and also it can decrease the ripples of torque effectively. |
PDF Full Text Request