• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 7
  • 7
  • 3
  • 1
  • Tagged with
  • 18
  • 9
  • 6
  • 6
  • 5
  • 4
  • 4
  • 4
  • 4
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Controller programming with CoDeSys for an automated timber sorting system

Breitholtz, Nils January 2010 (has links)
<p>This report describes the development of weight measurement application and transducer positioning for the A Sort prototype that has been developed for automatic grading and sorting of timber. The prototype consists of a transportation system with hydraulic and electrical motors, a measurement system with laser scanners and acoustic measurement equipment and a control program for the automated process with CoDeSys. The objective was to integrate these parts in an automatic system process, controlling a prototype designed for acoustic measurement of logs. The devices were installed and configured to communicate via an existing fieldbus line using CANopen as communication protocol. A control program was made for each task and implemented in the control process for the automatic measurement of logs. Two load cells were installed beneath a moving tilt and the measurement equipment was tested and calibrated using three different logs with known weight. The testing showed that in order to get higher accuracy the construction needs to be modified. Photo cells were installed on the measurement frames and a program was made in order to make the acoustic measurement of the logs work properly.</p>
2

Controller programming with CoDeSys for an automated timber sorting system

Breitholtz, Nils January 2010 (has links)
This report describes the development of weight measurement application and transducer positioning for the A Sort prototype that has been developed for automatic grading and sorting of timber. The prototype consists of a transportation system with hydraulic and electrical motors, a measurement system with laser scanners and acoustic measurement equipment and a control program for the automated process with CoDeSys. The objective was to integrate these parts in an automatic system process, controlling a prototype designed for acoustic measurement of logs. The devices were installed and configured to communicate via an existing fieldbus line using CANopen as communication protocol. A control program was made for each task and implemented in the control process for the automatic measurement of logs. Two load cells were installed beneath a moving tilt and the measurement equipment was tested and calibrated using three different logs with known weight. The testing showed that in order to get higher accuracy the construction needs to be modified. Photo cells were installed on the measurement frames and a program was made in order to make the acoustic measurement of the logs work properly.
3

Simulace průmyslových automatizačních protokolů / Industrial automation protocols simulation

Surový, Roman January 2020 (has links)
The aim of this work is to implement a workplace that will simulate the network infrastructure of industrial automation protocols. In this work we focus on and perform analysis of industrial protocols ModBus, Profibus, Profinet, EtherCAT, CANopen. Furthermore, the network infrastructure with PLC with selected protocols will be operated. The output of the work will be a workplace that will be able to simulate real communication of two selected protocols between two and more devices. Another part of the work will be the simulation of three types of equipment occurring in an industrial environment.
4

Implementering av dubbla CANbus i CANopen

Gustafsson, Linus January 2008 (has links)
<p>Hydroware Elevation Technology AB är ett företag som utvecklar styrsystem till hydrauliska hissar. Hårdvaran i detta system börjar bli gammal och går troligen ur produktion inom en snar framtid. EU har dessutom upprättat nya säkerhetsföreskrifter för installation av hissar där styrsystemet omnämns. I en grupp av hissar skall hisskorgarna isoleras från eventuella fel i övriga hissar. Med detta i åtanke har man inlett en förstudie där man tittar på ny hårdvara. Den nya hårdvaran har bland annat stöd för dubbla kommunikationsbussar, de bussar som styrsystemet använder för att kommunicera med samtlig styrelektronik.</p><p>Detta examensarbete går djupare in på teorin bakom kommunikationsbussen CANbus och kommunikationsprotokollet CANopen. En idé för hur styrprotokollet kan modifieras för att stödja de dubbla bussarna presenteras. Presentationen följs av en beskrivning av implementeringen och testningen av modifikationen.</p>
5

Implementering av dubbla CANbus i CANopen

Gustafsson, Linus January 2008 (has links)
Hydroware Elevation Technology AB är ett företag som utvecklar styrsystem till hydrauliska hissar. Hårdvaran i detta system börjar bli gammal och går troligen ur produktion inom en snar framtid. EU har dessutom upprättat nya säkerhetsföreskrifter för installation av hissar där styrsystemet omnämns. I en grupp av hissar skall hisskorgarna isoleras från eventuella fel i övriga hissar. Med detta i åtanke har man inlett en förstudie där man tittar på ny hårdvara. Den nya hårdvaran har bland annat stöd för dubbla kommunikationsbussar, de bussar som styrsystemet använder för att kommunicera med samtlig styrelektronik. Detta examensarbete går djupare in på teorin bakom kommunikationsbussen CANbus och kommunikationsprotokollet CANopen. En idé för hur styrprotokollet kan modifieras för att stödja de dubbla bussarna presenteras. Presentationen följs av en beskrivning av implementeringen och testningen av modifikationen.
6

Polohová regulace motoru pomocí 8bit uP / Positional Motion Control by means of 8bit uP

Janda, Petr January 2010 (has links)
This thesis deals with positional control of DC motor Icla D065 of company SIG Positec Automation GmbH with aid of CAN-Bus and CANopen protocol. Individual parts describe general principle and standards of CAN-Bus and international normalized higher-level protocol CANopen for systems control. For control this motor was used microcontroller PIC18F4685 from company Microchip and developmental environment MPLAB® IDE. With used C language was made program for MCU control communication with a motor by support of CANopen protocol and its motion control. The result of this thesis will be used in solution of research project Intelligent Systems in Automation.
7

Towards a Model-Based Motion Control Design for a 7-axis Robotic Arm LWA4D by Schunk

Vila Cano, Roger January 2016 (has links)
This thesis presents an overview and realization of several steps towards system integration and the control design for the robot arm LWA4D by Schunk using MATLAB/Simulink blocks through the adopted hardware and software from dSpace company. The dynamical equations for the manipulator using three and seven degrees-of-freedom will be derived and implemented using MATLAB/Simulink blocks. Moreover, the implementation of model-based controllers based on the system dynamics is implemented and tested both in ideal conditions and under the delays related to CAN communication protocol. In addition, in order to visualize the motion of the manipulator under the model-based controllers, SimMechanics is used alongside plots showing the end-effector position and the generated torques. Information regarding the first steps on how the hardware and software should be set up in order to establish communication between the manipulator and the Simulink blocks is provided as well. Finally, the problems that appeared during the implementation steps and the results obtained are discussed in the last section.
8

Controller Area Network : Möjlig CAN-buss lösningar inom entreprenadbranschen

Tillberg, Emil January 2019 (has links)
Företaget engcon Nordic AB producerar redskap till   entreprenadbranschen, där tiltrotator är hjärtat i deras verksamhet. För att   förbättra användningen och förenkla installationen har en litteraturstudie   gjorts som tittar på två delar, funktionen kring CAN-buss som grund för ett   kommunikationssystem, och olika högre lager protokoll som byggs ovanpå CAN.   Varför CAN-buss skapades och hur systemet fungerar är viktiga att förstå för   att kunna titta på dem ovanliggande lager, kallade HLP (Higher Layer   Protocol). HLP ger ett slags maskin-människa gränssnitt att arbeta emot.   Typer av HLP kan vara J1939, ISOBUS eller annan. CAN-buss är den de facto   standarden vad gäller fordonsnätverk där ECU:er, kallad noder, kommunicerar   på en gemensam kommunikationsstam, kallad buss. För att göra detta har en   snillrik teknik tagits fram för att prioritera meddelanden mellan noder, som   ger datamässigt förlustfri medling. CAN-buss har även ett avancerat   feldetekteringssystem på kommunikationen som ger den dess robusthet i   krävande miljöer. Vad gäller olika HLP finns en mängd av dessa inom olika   branscher. Alla har de gemensamt att de bygger upp ett mer eller mindre   användarvänligt gränssnitt som går att implementera ovanpå CAN. Inom till   exempel jordbruket använder man i hög utsträckning ISOBUS som är en egen   branschstandard som delvis ser förbi konkurrensen inom sektor för att bygga   ett enkelt, användarvänligt system som gynnar slutkunden på bästa sätt. Inom   automation används istället CANopen, som är ett öppet system som tillåter hög   interoperabilitet mellan olika enheter med så kallad profilering. Ett sista   system som används inom en rad olika branscher heter CanKingdom och är det   mest anpassningsbara systemet inom denna studie. För att få reda på mer   branschspecifik information kring lösningar och problem gjordes även en   intervjustudie inom projektet. Här intervjuades personer aktiva inom olika   företag som jobbar med CAN baserade system på något sätt. Intervjuerna   gjordes för att titta på relevanta problem inom deras specifika område. Som   resultat specificeras fyra alternativ som projektägaren bör titta vidare på   för att hitta ett system som passar dem. Det bygger på alternativ som   antingen kräver access till befintlig J1939 buss, eller att bygga en mer   eller mindre adapterad modell byggd på ISOBUS, CANopen eller CanKingdom. / The   company engcon Nordic AB produces equipment for the construction industry,   where the product called tiltrotator is the heart of their business. To   improve the use and simplify the installation, a literature study has been   made that looks at two parts, first the function around CAN bus as the basis   for a communication system and secondly various higher layer protocols (HLP)   built on top of CAN. Why CAN bus was created and how the system works is   important to understand in order to look at these overlying layers, called   HLP (Higher Layer Protocol), which provides a kind of machine-human interface   to work with. Different types of HLP can be J1939, ISOBUS or other. CAN bus   is the de facto standard for vehicle networks where ECUs (Electronic Control   Unit), called nodes, communicating on a common communication network, called   bus. To do this, an ingenious technique has been developed to prioritize   messages between nodes, which provides data loss-free arbitration. In CAN an   advanced technique for error detection on the communication has been applied,   and gives CAN the robustness to be applied in tough environment. As for various   HLPs, a large number of these are available in different industries. Every   one of these HLP has a common that they try to build a more or less user-friendly   interface that can be implemented on top of CAN. For example, in the   agricultural industry, the use of ISOBUS is common, which is an industrial   standard that goes beyond competition to build a simple, user-friendly system   that benefits the customer to the best possible extent. In automation,   instead, CANopen is used, which is an open system that allows high   interoperability between different units with so-called profiling. One last   system used in a number of industries is called CanKingdom and is the most   adaptable system in this project. In order to find out more industry-specific   information about solutions and problems, an interview study was also   conducted within the project. Here, various people were interviewed, active   in different companies that are involved in CAN-based systems. This was done to   look at relevant problems in their specific area. As a   result, four options are specified which the project owner should look at in   order to find a system that suits them. It is based on alternatives that   either require access to the existing J1939 bus, or to build a more or less   adapted model built on ISOBUS, CANopen or CanKingdom. / <p>Betyg: 2019-08-15</p>
9

Řízení pohonů pomocí PLC s využitím sběrnice CAN / PLC Drive Control by means of CAN Bus

Polach, Tomáš January 2008 (has links)
The theme and goal of this diploma is a draft and a method of application of a drive algorithm of an omni directional robot. The robot is driven with the aid of a PCL from the X20 series, produced by Bernecker&Rainer. The propulsion is provided using 3 integrated regulating driving mechanisms, IclA D065 produced by SIG Positec, which communicate via the CAN bus. Furthermore, the robot uses sensors to read the positioning of its chassis and undercarriage in order to identify the traction quality of the surface of the terrain below and subsequently reduce skidding. This sensor uses the RS 232 bus to communicate with the PLC. Thanks to all the above-mentioned and characteristics of power supply, the result achieved is a totally autonomous machine.
10

Řízení inteligentních pohonů IclA s využitím sběrnice CAN / Control Design of Intelligent Integrated closed loop Actuator by force of CAN

Škranc, Martin January 2009 (has links)
This diploma thesis deals with automatization technology by B&R Automation Company. CANopen protocol is used for communication and control design of actuator part of omni-directional mobile robot. The control algorithms are implemented for compact PLC automata X20 series. The PLC X20 communicates with PC by means of Ethernet TCP/IP protocol. There are four motion control patterns implemented. The robot uses three IclA D065 actuators. This research has been supported by the Czech Ministry of Education in the frame of MSM 0021630529 Research Intention Inteligent Systems in Automation.

Page generated in 0.0229 seconds