基于单片机的智能小车外文文献翻译.doc
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1、 毕业设计(论文)外文文件翻译 系 部 机电工程系 专 业 车辆工程 学生姓名 学号 指导教师 职称 讲师 2 月 Electric intelligent car based on SCM Through research and to realize a photoelectric sensor for sensitive components ,with AT8 control core electric tracing of intelligent control carbonylation-the car ,the system is dc motor ,L9110 chips an
2、d LM324 comparator etc. The design USES AT89C51 as intelligent c core controller. The system takes microcontroller as control core and realization of electric before Enter left and right turn function .Through the Angle sensor detection the seesaw Angle change ,use incremental pl algorithm to contro
3、l the electric car for balance ,and using photoelectric sensor detection black line ,make the electricity Actuation vehicle in the course of driving keep linear motion and dont skip from atrium . 1. Project Design Light buy a sensor ,the reality of the electric car is moving quickly degrees ,bit ,bu
4、y, line shape when measured quantity of real condition ,and will be measured quantity number according to preach sent to monolithic machine into line processing, but buy single chip according to the measured buy root different forms of several inspection according to re electric actuation vehicle wi
5、sdom can control system .This kind of square case real now t actuation vehicle dynamic shape state into the shipment do real possession in system ,control system spirit alive ,can depend ,pure degree is high ,can full foot of each item of the bed .(1)straight epidemiological speed is tasseled straig
6、ht epidemiological speed department with pulse width modulation experience .meanwhile gather speed is experience .meanwhile ,its main electrical pulse width modulation by road system type variable change device ,Jane says PWM variable change device .Adjustable speed by in the department of PWM exper
7、ience .Meanwhile open shut frequency rate is high ,only on electricity barnado electricity sense of filter use to get to move very small straight pulse electric flow ,electricity flow barnado elec easily even tantras, department of low speed operation flat experience .meanwhile ,adjusta stability va
8、n is surrounded relatively wide ,can reach 1000 left light .By on electricalwave flow shape than V-M system .be in phase with flat to all electrical flow dynamic machine ,ele consumption and hair loss than a small .with the sample buy in open shut frequency rate is high ,and if a fast speed electric
9、al machine ring should match close ,fasten tasseled pha get very wide frequency band ,because of the fast speed ring should be good ,dynamic conf sexual can perturbation resistance can force is powerful .According to the root ,with more than ensemble close and this set of electrical machine control
10、project by tolerance of the q 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 . 1.1 photoelectric detection module design The intelligent car was stuck on the black line running
11、 on white paper “road”, so this m need to detect shop on the black rubber belt drive area , including Run straight along the and driving district two area .Because f the black and white paper to light reflection c different ,can according to receive reflected light . The strength of the judge “road”
12、-the black line .this paper USES is simple and practical detec methods, namely the infrared detection method. Infrared detection method ,I use infrared ray in different colors of physical surface with differe reflection properties characteristics .In the car driving process Continually to the grou t
13、he 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 absor the infrared cars receiving tube receiving less than signal . 1.2 signal comparative module design This part design
14、USES a LM324 comparator ,of sensor signal voltage received compare and amplified ,and will compare 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 cant d
15、etect light ,in cut-off 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 ,t direction . 1.3 motor control and driving module design Because use is do
16、uble drive cars ,this part of the circuit must be able to output of two different voltage values ,respectivelyto 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 ,u
17、se two L9110 chips to connect SCM and dc motor respectively .L91 for control and drive motor design two channels push-pull power amplifier application-specific integrated circuit device ,discrete circuits in monolithic IC integrated such that the peripheral equipments in lower cost and the whole mac
18、hine can carry on sexual high .The core slice two a TTL/CMOS and let electricity flat lose into ,have good anti-jamming ,two output terminal flooding dynamic electric machine straight to the shipment of positive reverse move and i big electricity flow flooding dynamic can force ,each call way can pa
19、ss over 800mA continuous current ,peak current capacity of 1.5 OA ; At the same time it has lower output saturatio drop and the static electricity ,The built-in clamp a diode can release the perceptual lo current impulse ,making it the drive relays ,dc motors ,stepping motor or switch power tu of sa
20、fe and reliable . Follow tracing car system to common AT89C51, complementary with relatively simple components and circuit design ,the smooth completion of follow un premise of tracing function ,and fully considered appearance ,cosof the circuit car by s ,so mos manual welding is complete .In the de
21、sign ,we never in a circuit increase redundant func retained various hardware interface and software subroutines interface to facilitate the expansion and development after. 2. System hardware design 2.1 motor driver module design In making intelligent car, right wheel respectively with two speed an
22、d Torque basic identical dc motor driven deceleration. bolt-on trunk-lid spoiler Department to install a direction wheel, then through the I/O mouth to control tow dc slowing down Motor speed and steering can be ach on the car to the left, turn right and straight line. Motor drive using a integrated
23、 electrical machine flooding dynamic core slice L 298 N. L ST the production of the company, the internal containing four channel logical drive circ kind of tow phase four phase motor drive, namely the special contains tow H bridge of high large current commander bridge type drive,acceptance criteri
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