Based on the tms320f240 controller produced by ti company, the hardware and software designation of the symmetrical voltage space-vector pwm is presented . designed a digital controller with tms320f240 to modulate the speed of the motor, in which the keyboard and led display are bedded . it can be to set the frequency of motor and display the run frequency of motor in real time 基于ti公司的tms320f240控制芯片,介紹了對稱空間電壓矢量硬件設(shè)計和軟件設(shè)計,采用tms320f240設(shè)計了一款用于電機變頻調(diào)速的數(shù)字控制器,該控制器上設(shè)計有鍵盤和led顯示,可以設(shè)定和動態(tài)顯示電機運行頻率。