Cov txheej txheem:

Tsav Tsheb: 4 Cov Kauj Ruam (nrog Duab)
Tsav Tsheb: 4 Cov Kauj Ruam (nrog Duab)

Video: Tsav Tsheb: 4 Cov Kauj Ruam (nrog Duab)

Video: Tsav Tsheb: 4 Cov Kauj Ruam (nrog Duab)
Video: Plab Plab Ntswg..(Pluav Pluav Ntswg) Maiv Twm New Song 2023-2024 2024, Kaum ib hlis
Anonim
Tsav Tsheb
Tsav Tsheb

6 lub rooj tsav xwm tswj lub cav siv LMD18200 chips.

Kauj ruam 1: Yuav tsum tau ua

Yuav tsum muaj
Yuav tsum muaj

Txiav txim siab koj cov kev xav tau. LMD18200s tuaj yeem hloov 3A ntawm 55 V. Txoj haujlwm, kuv qhov kev kawm thesis, uas tau siv lub cav tswj lub cav no suav nrog 6 servo-motors uas tsuas xav tau ob peb puas milliamps ntawm 12 V. thesis yog tsim los ntawm lub chaw kuaj sim planetary rover los ntsuas. kev tswj hwm tshiab ntawm MIT's Field thiab Space Robotics Laboratory.

Kauj ruam 2: Tsim Circuit Court

Tsim Circuit Court
Tsim Circuit Court

Lub cev muaj zog tswj tau ua tiav los ntawm kev hloov pauv ntawm lub plawv dhia. Txawm hais tias PWM amps nyuaj dua me ntsis hauv ob qho tib si kho vajtse thiab kev tswj hwm, lawv muaj lub zog ntau dua li cov tso tawm suab tawm. PWM amp ua haujlwm los ntawm kev hloov pauv tam sim no lossis qhov hluav taws xob mus rau qhov nrawm ntawm lub xeev thiab tawm. Lub zog muab rau lub nra yog txiav txim los ntawm lub luag haujlwm hloov pauv ntawm qhov hloov pauv yoj. Muab hais tias lub zog ntawm kev thauj khoom qeeb dua li qhov hloov pauv, lub nra pom lub sijhawm nruab nrab.

Hauv qhov kev tsim qauv no, qhov hloov pauv zaus yog kwv yees li 87 kHz, uas tau hloov kho rau lub tshuab hluav taws xob ntawm lub rover. Lub voj voog ua haujlwm yog tswj hluav taws xob los ntawm kev teeb tsa qhov pib ntawm cov oscillators monostable uas tau tsav los ntawm cov oscillator astable. Ib qho digital rau analog hloov pauv ntawm lub rover lub khoos phis tawj tswj lub zog pib thiab yog li lub luag haujlwm hloov pauv ntawm lub tshuab hluav taws xob. PWM cov ntawv nthwv dej tau tsim los ntawm xya tus timers (txhua ntawm plaub 556 tus muaj ob lub sijhawm, thiab lub sijhawm thib yim tsis siv). Thawj lub sijhawm tau teeb tsa rau qhov ua tau zoo, thiab hloov pauv ntawm ib qho thiab tawm lub xeev ntawm 87 kHz. Qhov 87 kHz moos teeb liab no tau pub rau hauv qhov ua rau ntawm lwm rau rau timers, uas tau teeb tsa los ua haujlwm hauv hom monostable. Thaum lub sijhawm monostable tau txais lub cim teeb liab, nws hloov lub xeev los ntawm qhov tawm (0 volts) mus rau (5 volts) rau lub sijhawm uas teev los ntawm qhov hluav taws xob nkag. Lub sijhawm siab tshaj plaws yog kwv yees li 75% lub sijhawm ntawm lub teeb pom kev zoo thiab lub sijhawm tsawg kawg yog xoom. Los ntawm kev hloov pauv qhov ntsuas hluav taws xob, txhua lub sijhawm ua haujlwm monostable yuav tsim 87 kHz square yoj nrog lub voj voog ua haujlwm nruab nrab ntawm 0 thiab 75%. LMD18200 chips ua yooj yim raws li cov hloov pauv digital tswj los ntawm lub sijhawm tso tawm thiab los ntawm tus nres thiab taw qhia cov tswv yim digital los ntawm lub khoos phis tawj.

Kauj Ruam 3: Tsim Lub Rooj Tswjhwm Saib Circuit

Tsim cov Circuit Board
Tsim cov Circuit Board

Cov phiajcim hluav taws xob tau tsim los ntawm txheej txheem tshuaj lom neeg. Siv lub tshuab luam ntawv txheej txheem laser, cov kab hluav taws xob tau luam tawm rau hauv daim ntawv dej. Cov toner ntawm daim ntawv no tau pauv los ntawm cua sov mus rau cov tooj liab sib xyaw thiab cov khoom siv rwb thaiv tsev. Kuv siv fuser bar los ntawm lub tshuab luam ntawv laser tshem tawm, tab sis hlau kuj tseem tuaj yeem ua qhov dag. Cov seem ntawm daim ntawv raug ntxuav tam sim ntawd, tsuas yog cov toner nyob hauv tus qauv ntawm cov kab hluav taws xob. Ferric chloride tshem tawm cov tooj liab uas raug tshem tawm ntawm lub rooj tsavxwm. Cov tshuaj toner tseem tshuav tau txhuam los ntawm txhais tes siv sab ntsuab ntawm daim txhuam cev, tawm tsuas yog cov tooj liab sib txuas ib qho. Ib qho ntxiv, muaj cov khoom siv uas ua rau cov txheej txheem no yooj yim dua.

Kauj Ruam 4: Cov Cuab Yeej Siv Hauv Cheeb Tsam

Solder hauv Cheeb Tsam
Solder hauv Cheeb Tsam

Solder hauv txhua qhov khoom. Txij li nws tsuas yog ib txheej txheej xwb, yuav tsum muaj ob peb jumper xov hlau.

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