Krmiljenje krožne žage za razrez hlodovine

PFLAUM, ALJAŽ (author), Vončina, Danjel (mentor)

Glavni namen te magistrske naloge je bilo izdelati vgrajeni sistem, ki bi lahko, glede na parametre, ki mu jih poda uporabnik preko uporabniškega vmesnika, samostojno vodil krožni žagalni stroj za hlodovino. Moje delo pri tem projektu je obsegalo izdelavo programske opreme, vezja s katerim lahko mikrokrmilnik krmili frekvenčne pretvornike ter android aplikacijo, preko katere lahko z uporabo tabličnega računalnika komuniciramo s krmilnikom preko brezžične Bluetooth povezave. V magistrski nalogi je tako najprej predstavljen krožni žagalni stroj in njegova trenutna kot tudi bodoča konstrukcija. Krožni žagalni stroj namreč za časa pisanja tega magistrskega dela še ni dokončan. Nato je predstavljena problematika neavtonomnega delovanja žagalnega stroja, ki je tudi vzrok, da je bil v sklopu te naloge razvit mikrokrmilniški sistem za avtonomno delovanje žagalnega stroja, pri katerem je bila posebna pozornost namenjena varnosti celotnega sistema, z namenom, da stroj deluje varno. Mikrokrmilnik je bil programiran v jeziku C++, uporabniški vmesnik pa v jeziku Java. Večji del naloge nato obsega predstavitev in rešitev problematik, povezanih s programsko, električno in mehansko implementacijo danega krmilnika. Na koncu naloge je predstavljena še industrijska alternativa, saj sistemi, ki imajo podobne funkcionalnosti že obstajajo, a so ekonomsko neustrezni za ta projekt.

• Language: Slovenian
• Keywords: mikrokrmilnik, vgrajeni sistem, žagalni stroj, frekvenčni pretvornik, avtonomno delovanje, C++
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2020
• PID: 20.500.12556/RUL-117548
• Publication date in RUL: 15.07.2020

Secondary language

• Language: English
• Title: Control of a circular saw for cutting logs

Abstract

The main purpose of this thesis was to make an embedded system that would, based on user provided inputs from the user interface, autonomously control a circular saw for cutting logs. My work on this thesis includes the creation of software, a circuitry for the microcontroller to be able to control frequency inverters and an android application with which the microcontroller can be controlled using wireless Bluetooth communication. The thesis firstly presents how the saw is and is yet to be constructed. The saw is, as of the time of writing, not yet completely finished. Then the problem of non-autonomous operation is presented. This was the main reason behind the development of an autonomous control system for the saw. Special care was taken when designing and implementing safety, both for the user and the machine itself. The microcontroller was programed in C++ language and the user panel was programmed in Java. The greater part of this thesis focuses on the problems and solutions in software, electric and mechanical implementation of the microcontroller. At the end of the thesis an industrial standard solution is presented, which was however not chosen due to economic reasons.

• Keywords: microcontroller, embedded system, saw, frequency inverter, autonomous operation, C++