The Application of Improved Digital Control for Electromotor Speed-governing System Based on TMS320C2812

In recent years,cascade speed-regulation has gradually been replaced by variable frequency speed-regulation.But in some hard natural environments like mines,water pump and etc,which demand high powerful condition,the cascade speed-regulating could show its mechanical capability equal to variable frequency speed-regulating.Further more,it can save money.Hereupon,this paper improves digital control based on coil asychronism motor into digital-control motor.The result shows that after the digital control improvement,the speed-governing system makes prominent progress in robust and stability.