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Title:Inkorporacija programabilnega logičnega krmilnika v dinamični proces regulacije pretoka : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Virant, Maj (Author)
ID Bogataj, Miloš (Mentor) More about this mentor... New window
ID Nemet, Andreja (Comentor)
Files:.pdf UN_Virant_Maj_2021.pdf (3,19 MB)
MD5: 675BF21A972AABAE6FA3B9922ED6A66D
PID: 20.500.12556/dkum/4639701f-a714-4379-9a95-ee5fe658bfa8
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Vodenje in nadzorovanje procesov je široko področje kemijskega inženirstva, ki se povezuje tudi s strojništvom in informatiko. V okviru diplomske naloge smo skušali regulacijo relativno preprostega dinamičnega procesa izboljšati s uporabo programabilnega logičnega krmilnika (PLK), ki bi operatorju omogočal bolj fleksibilen in transparenten pregled nad stanjem v procesu ter operacijami, ki jih bi krmilnik izvajal. Vključili smo tudi prednosti logičnega krmilnika, kot so grafični vmesnik na dotik, varnostna funkcija za preprečitev pregrevanja črpalke ter samodejna sprožitev alarmov pri nestabilnem obnašanju procesa. Pripravo na regulacijo smo uspešno nadgradili z vključitvijo funkcije samonastavitve »auto-tune«, ki samodejno nastavi regulacijske parametre. Program za PLK smo pripravili na način, da ga je enostavno vključiti tudi v že obstoječ sistem. Velika prednost takega načina dela je fleksibilnost in možnost razširitev, ne le znotraj enega sistema temveč tudi povečava na industrijski nivo z mnogimi reguliranimi spremenljivkami hkrati. PLK, uporabljen kot PID regulator, smo eksperimentalno primerjali s industrijskim PID krmilnikom, ki je bil tovarniško vključen v uporabljeno eksperimentalno napravo. Izkazalo se je, da je PID regulacija s uporabo PLKja enako učinkovita kot tovarniška, saj enako hitro doseže želeno vrednost pri stopničasti spremembi. Skupaj z dodatnimi funkcijami, ki jih ponuja PLK, smo sistem uspešno naredili učinkovitejši, varnejši ter enostavnejši za uporabo.
Keywords:povratno zančna regulacija, PID regulacija, programabilni logični krmilnik, regulacija pretoka
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[M. Virant]
Year of publishing:2021
Number of pages:VIII, 26 f.
PID:20.500.12556/DKUM-80190 New window
UDC:66.087:66.09(043.2)
COBISS.SI-ID:80260867 New window
NUK URN:URN:SI:UM:DK:BCCU8LVK
Publication date in DKUM:06.10.2021
Views:1147
Downloads:66
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-SA 4.0, Creative Commons Attribution-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-sa/4.0/
Description:This Creative Commons license is very similar to the regular Attribution license, but requires the release of all derivative works under this same license.
Licensing start date:01.09.2021

Secondary language

Language:English
Title:Incorporation of a programmable logic controller in a dynamic flow control process
Abstract:Running and controlling processes is a vast area of chemical engineering, that also connects with mechanical engineering and informatics. In this thesis, we tried to improve the regulation of a relatively simple process by replacing the sole-unit PID regulator with a programmable logic controller (PLC). That allowed for more flexible and transparent interaction with the process. We utilized the available features of the PLC to incorporate graphical interfaces, a safety function for pump overheating prevention, and automatically triggered alarms for system errors. We successfully improved the preparation for PID regulation by applying an auto-tune function for automatic PID parameter setup. The PLC program was created in a way that it's easy to implement in an existing system. The main benefits of such workflow are flexibility and the possibility to scale the whole process, not just within one system but also on an extensive industrial level containing many variables regulated simultaneously. We compared the feedback regulation efficiency of a PLC used as a PID regulator with the standalone PID regulator that was provided with the experimental machine. As it turned out, PID regulation using PLC is just as efficient as the factory-provided standalone regulator based on the performance comparison on step change. Along with the possible extra functions of PLC, we successfully made the system more efficient, safer, and easier to use.
Keywords:feedback control, PID control, programmable logic controller, flow control


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