SINHRONO RESETIRANJE OJAČEVALNIKA NABOJA

Valenko, Darko

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Title:	SINHRONO RESETIRANJE OJAČEVALNIKA NABOJA
Authors:	ID Valenko, Darko (Author) ID Šafarič, Riko (Mentor) More about this mentor... ID Gotlih, Karl (Mentor) More about this mentor... ID Pec, Martin (Comentor)
Files:	UNI_Valenko_Darko_2009.pdf (2,06 MB) MD5: 7AF8C266157BC7D9A7238D026ECFBF66 PID: 20.500.12556/dkum/54af5499-a3a1-4484-b717-aad197b91420
Language:	Slovenian
Work type:	Undergraduate thesis
Organization:	FERI - Faculty of Electrical Engineering and Computer Science
Abstract:	V diplomski nalogi smo realizirali sinhrono resetiranje ojačevalnika naboja. Na začetku smo podali osnove o motorjih z notranjim zgorevanjem, za razumevanje delovnega krožnega procesa. Podali smo tudi osnove o piezoelektičnih senzorjih, za lažje razumevanje delovanja le-teh. Beseda je tekla tudi o delovanju ojačevalnikov naboja in sami problematiki, ki se pojavlja pri teh vrstah ojačevalnikov. Glavna težava ojačevalnikov naboja je lezenje (ang. 'drift') oz. neželena sprememba izhoda. Ojačevalniki naboja z visoko časovno konstanto po določenem času pridejo v pozitivno ali negativno napetostno zasičenje, zato jih je potrebno občasno resetirati oz. sprazniti integracijski kondenzator. Uporabljen ojačevalnik naboja se uporablja za merjenje tlaka v valju motorja z notranjim zgorevanjem pri razvoju in testiranju teh vrst motorjev. Testiranja so dolgotrajna, zato je sinhrono resetiranje ojačevalnika naboja nujno potrebno, da zagotovimo točne meritve tlaka med samim delovanjem motorja z notranjim zgorevanjem.
Keywords:	merjenje električnih in neelektričnih veličin, ojačevalnik naboja, piezoelektrični senzor, algoritem detekcije periode
Place of publishing:	Maribor
Publisher:	[D. Valenko]
Year of publishing:	2009
PID:	20.500.12556/DKUM-11116
UDC:	621.791(043.2)
COBISS.SI-ID:	13669142
NUK URN:	URN:SI:UM:DK:KCOTDKKO
Publication date in DKUM:	08.07.2009
Views:	2432
Downloads:	256
Metadata:
Categories:	KTFMB - FERI
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Secondary language

Language:	English
Title:	SYNCHRONOUS RESETTING CHARGE AMPLIFIER
Abstract:	In the diploma work we have implemented synchronous resetting of the charge amplifier. At the beginning we had presented some basic information about internal combustion engines for the understanding of the working cycle. Then we presented some basis about piezoelectric sensors, for better understanding of how they work. There was also talk about charge amplifiers and problems that occur in these types of amplifiers. The main problem in charge amplifiers is the drift, which is the undesired change in output over a period of time. Charge amplifiers, with high time constant go to positive or negative voltage saturation ofter a certain period of time. Because of that charge amplifiers have to be reseted, which means the integrating capacitor has to be emptied. This type of charge amplifiers are used for measuring the pressure in the internal combustion engine during the developing and testing of such types of engines. Testing takes a lot of time so synchronous resetting of charge amplifiers is needed to ensure accurate measuremens of the pressure during the operation of internal combustion engines.
Keywords:	measurement of electric and non-electric values, charge amplifier, piezoelectric sensor, period detection algorithm

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