Pure electric vehicles two keeps off mechanical type automatic gearbox gear -change control system

The utility model discloses a pure electric vehicles two keeps off mechanical type automatic gearbox gear -change control system, this system include vehicle control unit, driving motor, variable -speed controller, servo driver and DC servo motor, through the PWM number of pulse control interval of shifting gears, shift gears quick, accurate, put in right place in one step, adopt displacement sensor to receive gearbox spatial position restriction defect easily in effectively having avoided the traditional approach, the gearshift adopts the turnscrew and takes the shift fork structure of nut, simple structure, the accuracy of shifting to self -locking function has, the action of shifting was accomplished in 1 second, and the time of shifting is short, and the square is decided in the pulse, the accuracy of shifting, target in place, strikeed little, and effective realization fast, shift smoothly, through the number of pulse that updates global variable, realize the intellectual detection system interval of shifting, the precision problem inadequately of shifting that mechanical structure manufacture error aroused such as gearshift and gearbox has been solved to accuracy nature and rapidity that the guarantee was shifted at every turn.