Thib tsib, txoj haujlwm ua haujlwm ntawm lub cav servo
Raws li pom hauv daim duab hauv qab no, nws yog ib qho kev tswj xyuas qhov kev pabcuam ua haujlwm uas ua haujlwm ntawm lub hwjchim ua haujlwm Amplifier LM675. Lub cav siv lub cav DC servo. Raws li pom tau los ntawm daim duab, lub zog ua hauj lwm amplifier LM675 yog powered los ntawm 15V, qhov 15V voltage yog siv rau cov tswv yim uas tsis ua haujlwm ntawm kev siv ua haujlwm Amplifier LM675 ntawm RP1, thiab qhov hluav taws xob qhov hluav taws xob ntawm LM675 yog siv rau cov tswv yim ntawm lub cav servo. Lub teeb tsa hluav taws xob dhia ceev nrig ntawm lub tshuab kom paub txog kev ceev ntawm lub tshuab ua lub sijhawm. Nyob rau hauv qhov tseeb, lub teeb liab generator yog ib lub tshuab hluav taws xob uas nws qhov kev tawm qhov hluav taws xob yog qhov sib luag nrog rau kev ceev. Qhov hluav taws xob tso tawm los ntawm kev khiav qhov teeb meem hluav taws xob generator G yog pub rov qab rau lub davhlau ya dav hlau hluav taws xob ntawm qhov kev ua hauj lwm amplifier ua ib qho teeb meem yuam kev ntawm qhov hluav taws xob faib hluav taws xob. Tus nqi hluav taws xob uas teev los ntawm tus ceev cov lus tsav tsheb potentiometer RP1 yog faib los ntawm R1.R2 thiab ua ntawv thov rau lub dav hlau uas tsis yog qhov hloov ntawm qhov ua haujlwm ua haujlwm, uas yog sib npaug ntawm cov kev siv hluav taws xob.
Lub cav servo siv cov ntawv M los qhia rau lub cav servo thiab yog lub hauv paus ntawm lub hwj chim rau tsav tsheb. Ua Haujlwm Amplifier: Sawv cev los ntawm lub npe hu ua, LM675, yog ib qho kev tivthaiv rau kev tswj hwm hauv qhov kev pabcuam tswj xyuas qhov kev pabcuam uas muab cov tsav tam sim no rau lub cav servo.
Ceev ceev hwjchim ua kom muaj zog RP1: Teem tau qhov kev siv hluav taws xob ntawm kev ua haujlwm ua haujlwm rau hauv Circuit Court, uas yog, qhov chaw ceev. Amplifier Gain Adjusting Potentiometer RP2: Siv kom zoo qhib qhov nce thiab ceev tawm tswv yim ntawm qhov kev hloov nyob rau hauv Circuit Court.
Thaum twg lub pob ntawm lub tshuab hloov pauv, qhov voltage noj rov qab mus rau lub tswv yim inverting ntawm qhov ua haujlwm amplifier kuj hloov. Uas yog, thaum lub cav load ntau zog, qhov kev txo yog txo, thiab qhov hluav taws xob qhov hluav taws xob ntawm qhov ntsuas qhov ntsuas generator kuj tau qis, yog li ntawd qhov ua hauj lwm amplifier muaj ib qho kev tawm tswv yim kev xa tawm. Qhov cov tee voltage, qhov txawv ntawm no voltage thiab cov kev siv voltage nce, thiab cov zis hluav taws xob ntawm qhov ua haujlwm amplifier nce. Txaus siab, thaum lub zog ua zog me me thiab lub zog khiav nce, qhov tso zis hluav taws xob ntawm qhov ntsuas qhov ntsuas hluav taws xob nce siab, qhov tawm tswv yim voltage uas siv rau lub davhlau ya dav hlau ntawm qhov kev ua haujlwm ua kom haum, qhov sib txawv ntawm qhov voltage thiab reference voltage decreases, thiab qhov hluav taws xob qhov hluav taws xob ntawm qhov ua hauj lwm amplifier decreases. Qhov no yuav ua rau qhov tsav ntawm lub cav kom poob, thiaj li hais tias qhov kev ceev tau tuaj yeem tswj tau ntawm tus nqi teev.
