Study On The Controlling System Of PMSM Based On DSP

Servo-control technology is one of the most important part of mechtronics.which is widely used on the automatic equipments.such as CNC and industrial robot.As the scale of production becomes larger and larger.the demand and requirements becomes higher and higher.AC servo system has advantage over DC servo system.so study on improving the AC servo system behavior has important sense.This paper studies on used the AC servo system based on TI DSP(LF2407A) and the FOC and digital signal processing thorem ,achieves following results: Algorithm.we employ SVPWM (space voltage PWM)algorithm,improve the efficiency of the electric source,and decrease the harmonious elements.we build the mathematic model of the system and simulate it on MATLAB platform, dsigne segmented PID regulator to adapt variable speed and widen the speed range. Measurement.the velocity and electric current measuring ,we adopt multi-sampling- rate and digital filter principles.As more improvements we make,the whole system gets a good results.. PC control.the complete controlling system can be controlled remotely.so we develop the PC controlling program.. we build hardware platform and practice the algorithm..