外文翻译----基于单片机的电动智能小车-单片机(编辑修改稿)

外文翻译----基于单片机的电动智能小车-单片机(编辑修改稿)内容摘要：

fast speed of electrical machine ring should match close, fasten tasseled phase can be to get very wide frequency band, because of the fast speed ring should be good, dynamic configuration sexual can perturbation resistance can force is powerful. According to the root, with more than ensemble close and this set of electrical machine control project by tolerance of the quantity and electrical machine speed straight flow of hair, the exhibitor to adopt the project with a single extremely H type can be changed into change device inverse PWM line speed. photoelectric detection module design The intelligent car was stuck on the black line running on white paper road, so this module design need to detect shop on the black rubber belt drive area, including Run straight along the arc district and driving district two area. Because of the black and white paper to light reflection coefficient is different, can according to receive reflected light. The strength of the judge road the black line. This paper USES is simple and practical detection methods, namely the infrared detection method. Infrared detection method, . use infrared ray in different colors of physical surface with different reflection properties characteristics. In the car driving process Continually to the ground to launch the infrared, when the infrared met white ground occurs when the reflected light, aimless and launch packed on the car of receiving tube receiving。 if Fruit is met black line is absorbed, and then the infrared cars receiving tube receiving less than signal. 1. 2 signal parative module design This part design USES a LM324 parator, of sensor signal voltage received pare and amplified, and will pare the results after Feed to the microcontroller, used to detect sensor sensitivity, diagram shown in figure 5 shows. When two sensors simultaneously detect light, straight forward. When the sensor can39。 t detect light, in cutoff state, double LM324 operational amplifier output low level to microcontroller, by program processing, If left Not detected light, then left correct direction。 If the right has not been detected light, then turn correct direction. 1. 3 motor control and driving module design Because use is double drive cars, this part of the circuit must be able to output of two different voltage values, respectively to controlling trolley right and left two motor drive, the two of the wheel speed and direction of the same or different, thus to control its advance and turning. In system design process, use two L9110 chips to connect SCM and dc motor respectively. L9110 is for control and drive motor design two channels pushpull power amplifier applicationspecific integrated circuit device, discrete circuits in monolithic IC integrated such that the peripheral equipments in lower cost and the whole machine can carry on sexual high. The core slice two a TTL/CMOS and let electricity flat lose into, have good antijamming, Two output terminal can pick flooding dynamic electric machine straight to the shipment of positive r。