The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper implements an embedded system current industrial communication protocol. It is based on the fastest EtherCAT, as fast as a PC-based system. The EtherCAT Slave module is easily used due to the Master System composed of the Embedded System.
Industrial network, often referred to as fieldbus, becomes an indispensable component for intelligent manufacturing systems. Thus, in order to satisfy the real-time requirements of field devices such as sensros, actuators, and controllers, numerous fieldbus protocols have been developed. But, the application of fieldbus has been limited due to the high cost of hardware and the difficulty in interfacing...
To get the maximum performance of stepper motor, different types of improvement and work has been done. In this work, open loop control of stepper motor is considered under general purpose (Windows), Soft (Linux) and hard (RT-Linux) real-time operating systems. We have used the same controller program to operate the stepper motor in different operating system under multitasking environment. The data...
With the progress in science and technology, the modernization manufacturing process have become increasingly demanding in CNC. In this paper, it has chosen permanent magnet synchronous motor (PMSM) and digital signal processor (DSP) to design the servo control system for Open-CNC. Based on the analysis of the Open-CNC structure, movement principle, fundamental theories of vector control, it has built...
The fusion experiment Wendelstein 7-X demands synchronizing processes in many distributed technical components with an accuracy from milliseconds to nanoseconds. For this purpose a trigger-time-event system (TTE system) was developed. Its main task is the synchronization of all control components and data acquisition systems. It allows time stamping, processing of trigger signals and event messages...
An object oriented approach has been developed using Lab VIEW RT. This real-time variant of the well known graphical programming language is based on the PharLap OS. This approach allows for two different scenarios. First, existing object oriented code developed for MS-Windows and Linux platforms can be reused on a real-time platform, next to a time critical loop with high priority. The reusability...
The paper describes the software architecture of the real time control system of the RFX-mod nuclear fusion experiment. Several units form a control network, in which data are exchanged during control. The system employs general-purpose processor boards, and uses insulated Ethernet for real time communication. The software is organized as a two-level framework. At the first level, the framework provides...
The RFX-mod experiment is resuming operation after a five-year shutdown during which significant machine modifications have been done to improve plasma controllability. Its scientific program is focused on the exploitation of innovative plasma control techniques, including magneto-hydrodynamic mode control. To allow a variety of control schemes on the experiment, a distributed, digital, real time...
cMsg is a messaging system designed for use in realtime data acquisition and online controls systems, and includes support for C/C++ and Java clients. It is highly customizable and extensible, and includes a full-featured asynchronous publish/subscribe component as well as a synchronous peer-to-peer component. We first describe the publish/subscribe and peer-to-peer messaging paradigms, discuss their...
The need to control in real-time the plasma parameters in fusion devices leads to the development of algorithms requiring intensive computation and providing results on a few hundred microseconds. The present paper's objective was the implementation of the current filaments method (CF) to model in real-time the ISTTOK plasma shape and position. The hardware used was the on site developed PCI-TR-256...
Openness is one of the aims pursued by modern controller systems. The typical features of one controller system include easy extension, flexible reconfiguration, facile portability and jointless interoperation. Therefore, in one open controller, the system elements from multidisciplinary areas can be integrated and reconfigured easily. Also the system modules can be ported flexibly. In this paper,...
This paper describes a rapid control prototyping (RCP) approach to design and implement a robot control system in a motion simulator. Different from most RCP applications, we apply RCP not only to design the feedback loop control level, but also to the supervisory control level for command-mode switching, event monitoring, and fault detection. All real time software running in the robot controller...
The common challenges in the real-time control system design are the control system integration, modeling and analysis, program coding, and real-time data communication. To address the solutions to these challenges, this paper presents the design of a control system testbed for a two degrees of freedom (2-DOF) robot. The design methodology supports the designer to (1) apply the theories of robotics...
Control education laboratories are an important issue for graduate/undergraduate students. ARTIST is designed to provide an efficient, remote and distributed control lab. By using Matlab and Simulink users can easily test their control algorithms on real plants through an Internet connection. Safety and performance of control experiments are guaranteed by using a real-time operating system and an...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.