Základní jednotka pro ovládání výroby bionafty

This work describes the control of biodiesel production from renewable and waste raw materials. Biodiesel for internal combustion engines are currently produced and used with all its advantages (reducing CO2, produced from renewable materials) and disadvantages (higher nitrogen oxide emissions). For production of biodiesel was implemented and deployed controlling system based on programmable logic controller Saia. Programmable logic controllers are widely used and deployed from the smallest to the largest manufacturing processes in industry. The control system maintains the required parameters of a chemical reaction, in which biodiesel is created from renewable or waste raw materials.V článku je popsáno řízení výroby bionafty z obnovitelných zdrojů a z odpadních surovin. Bionafta pro spalovací motory je v současné době vyráběna a používána se všemi jejími výhodami (snižování emisí CO2, výroba z obnovitelných zdrojů) a nevýhodami (zvýšení emisí oxidů dusíku). Pro výrobu bionafty byl vyvinut a nasazen kontrolní řídicí systém založený na programovatelném automatu Saia. Programovatelné automaty jsou široce používány a nasazovány v průmyslových výrobních procesech, a to jak v těch nejmenších, tak i ve velmi komplexních zařízeních. Popisovaný řídicí systém udržuje požadované parametry chemické reakce, při které je bionafta vyráběna z obnovitelných zdrojů nebo odpadních surovin

Design, Function and Effects of Frangible Small Arms Ammunition

Bakalářská práce se zabývá charakteristikou a funkčními vlastnostmi střeliva frangible. V úvodu je popsáno a rozděleno střelivo pro ruční palné zbraně. Je zde popsán historický vývoj frangible střel. V bakalářské práci je popsána konstrukce a vlastnosti tohoto střeliva. Po teoretické stránce byli vypočteny vybrané charakteristiky s následným vyhodnocením. Na závěr je frangible střelivo klasifikováno z právního hlediska.This thesis deals with characteristics and functional properties of frangible ammunition. The introduction describes and divides ammunition for small arms. The historical development of frangible bullets is described here. The bachelor’s thesis describes the construction and properties of this ammunition. From a theoretical point of view, selected characteristics were calculated with subsequent evaluation. In the end, frangible ammunition is classified from a legal point of view.340 - Katedra výrobních strojů a konstruovánídobř

Takahashi controller with continuous identification in fast response application

The paper describes Takahashi controller with an adaptive system identification in a fast response application and describes hardware design with an 8-bit microcontroller. Takahashi controller is modified PSD controller and due to simple calculation of controller's parameters it can be implemented into the 8-bit microcontroller. The microcontroller was selected from Freescale semiconductor, specifically MC9S08DZ60 which has maximum allowed frequency 40MHz. The identification is based on the least squared recursive method in the beginning of the control process and during the operation at the moment when user changes systems parameters. These are given by the application of the fast response temperature control of soldering tips which are changeable during soldering process. In the first part of the paper the controller is described and in the second part practical aspects of hardware design, such as low power consumption, method how to measure temperature by thermocouple which shares wires with heater and design of AD converter are described

The control system for the production of biodiesel

This article describes the control unit for the production of biodiesel from waste material, such as fats or oils. The control system is based on programmable logic controller of PCD2 family and provides dosing of feedstock materials (fat or oil) and other material, temperature reactor control, visualization of process and progress of production. It provides easy setting of the parameters of the technological process - transesterification. It was proposed to use in laboratory or small industrial production. There can be connected touch screen terminal to the control unit or the user can use local area network for the connection with computer with web browser to control the production process. The process of desalting is proposing for the preparation of waste materials (fats from leather industry, it's based on ARM microcontroller from Cortex-M4 family with touch screen LCD (10.4)

Adaptive identification and PSD controller implementation into 8-bit microcontroller

An application and an implementation of an adaptive identification and of Takahashi PSD controller are described in this article. The application is based on 8-bit HCS08 microcontroller (DZ family) from Freescale semiconductor. This family is intended for automotive application, and also for general purposes. Except the microcontroller, a power part and analog part of circuit was used for measure and converting a thermocouple temperature; it is directly measured inside the heater. This system is designed for fast temperature control of soldering precise tips. The controlled system is identified during heating process by the recursive least square method at the beginning of control process and on demand of user (when the tip is replaced by other type). The hardware was designed to save space and to minimize power loses on switching transistor. It leads to have the transistor without heatsink. The transistor was selected from PowerTrench family with an extremely low rDS(ON) resistance. © 2016, North Atlantic University Union. All rights reserved

Aplikace pro řízení výroby bionafty

Z(MSM7088352102

Application of self-tuning polynomial controller and comparison with standard controller

The article deals an implementation of a numerical adaptive self-tuning controller for a usage in a drying machine in a production of small amount printed circuits boards. The controller is design to use in a 8-bit microcontroller from DZ family produced by Freescale Semiconductor providing main functions – temperature measuring and control, communication with PC. That microcontroller is a main part of the dryer, but other parts (triacs and drivers) are indispensable. A dryer dynamic system is identified during a control process by a recursive least-square method. The controlling part is calculated on the basis of a dead beat control method. Of course, it is verified on a real device with surroundings which independently change temperature and air flow and it is compared with a non-adaptive controller. © 2014 North Atlantic University Union. All rights reserved

Univerzální řídicí jednotka

Z(MSM7088352102