The Implement Of Predictive Control And Vector Control On PMSM By DSP

Permanent Magnet Synchronous Motor (PMSM) drived by triphase sinusoidal current is research object in this paper . Firstly , its mathematics models in several coordinate are set up basis on the analysis of electromagnetism restricted relation, and then, vector control method of PMSM is described, in the same time, PWM technology based on current comparing to selecting space voltage vector and predictive control technology used in speed-loop is presented in detail. The simulation model of PMSM close-loop control system is presented based on PWM inverter model and switching vector table model set up by the author and PMSM model in Matlab. The model is proved correct from the simulation result. At last, the close-loop control is implemented by velocity feed-back using optoelectronic coder, and starting method is analyzed at the same time. The experiment result shows that control method has the better dynamic capability.