Supervised Operation Monitoring and Control System of Rotating Rolls

2003 ◽  
Author(s):  
Pekka Salmenpera¨ ◽  
Juha Miettinen
Keyword(s):  
Control System ◽  
Data Transfer ◽  
Local Area Network ◽  
Measurement Data ◽  
Fuzzy Rule ◽  
Local Area ◽  
Area Network ◽  
Monitoring And Control ◽  
Knowledge Based ◽  
And Control

The dynamic behavior of rotating machinery depends on the construction and foundation of the machine and in addition of the machine running parameters. By choosing appropriate parameters it is possible to influence considerably on the vibration of the machine. By driving the machine in that kind of an advantageous running window it is possible to minimize the vibration of the machine and to improve the quality of the product, but not to lose the efficiency of the productivity. Machines where the running window is important in maximizing the quality of the product are rotating cylindrical rolls in line contact for example in paper machines and grinding machines. In that kind of machines resonance situations are the most dangerous operation situations. The on-line measurement from rotating machine components requires wireless measurement data transfer applications. Sophisticated systems for that purpose need transfer capacity of several channels and two-way communications. Two-way communications allows the control of the measurement, versatile analysis of measurement signals and the control or supervised control of the running situation of the machine. If network solutions, for example via www are used, it is possible to use remote operation monitoring and control. In this paper a supervised operation monitoring and control system of a pilot roll station at Tampere University of Technology is described. The main components of the system are measurement unit on the end flange of the rotating roll, wireless local area network for measurement data transfer from the rotating roll to the control room computer and the local area network that connects the process control and signal analysis computers together. The system contains also a WWW-based remote control system for measurement signals from the rotating rolls and for the process variables. One possibility in this kind of complicated control situation is to use the fuzzy logics principle. Fuzzy logics are principally suitable for process control when knowledge-based systems fit well in diagnostics. However, fuzzy rule-based control can be defined as a knowledge-based system. For finding out the suitable running windows in the pilot roll station a fuzzy rule-based, supervised roll rotational speed control system is used. The paper describes also the fuzzy systems and comprises preliminary experimental results.

Development of a Substation Digital Protection and Control System Using a Fiber-Optic Local Area Network

1989 ◽  
Vol 9 (7) ◽  
pp. 51-52 ◽  
Author(s):  
M. Suzuki ◽  
T. Matsuda ◽  
N. Ohashi ◽  
Y. Sano ◽  
R. Tsukui ◽  
...  
Keyword(s):  
Control System ◽  
Fiber Optic ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Digital Protection ◽  
Protection And Control ◽  
And Control

Development of a substation digital protection and control system using fiber-optic local area network

1989 ◽  
Vol 4 (3) ◽  
pp. 1668-1675 ◽  
Author(s):  
M. Suzuki ◽  
T. Matsuda ◽  
N. Ohashi ◽  
Y. Sano ◽  
R. Tsukui ◽  
...  
Keyword(s):  
Control System ◽  
Fiber Optic ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Digital Protection ◽  
Protection And Control ◽  
And Control

scholarly journals Data Processing Method in Medium Range Coastal Radar Complex

2018 ◽  
pp. 35-41
Author(s):  
Dang Quang Hieu ◽  
Nguyen Xuan Truong
Keyword(s):  
Situation Awareness ◽  
Local Area Network ◽  
Local Area ◽  
Radar Data ◽  
System Structure ◽  
Local Network ◽  
Area Network ◽  
Monitoring And Control ◽  
Fusion Algorithm ◽  
And Control

The article presents the basic principles of design and development of integrated middle range Coastal Surveillance System (CSS) used for water surface lookout. It provides solutions for such missions as command and control of maritime forces, border monitoring and control, prevention of illegal activities such as piracy, smuggling, illegal immigration, illegal fishing, supporting search and rescue (SAR) operations, and creates a common situation awareness picture of the Naval Theatre. The system structure diagram is designed to solve computational overload problem when processing large volume of data received from radar stations. The measurement-level fusion algorithm is developed based on the JPDA framework, in which radar data received from a single or group of radars and AIS data is aggregated in a processing center. The servers and workstations make use of local area network (LAN), using standard Gigabit Ethernet technologies for local network communications. Acquisition, analysis, storage and distribution of target data is executed in servers, then the data is sent to automated operator stations (console), where functional operations for managing, identifying and displaying of target on digital situational map are performed.

Development of a Web-Based Controller for Remote Sensing and Control of Manufacturing Processes

1998 ◽  
Author(s):  
Swee M. Mok
Keyword(s):  
Local Area Network ◽  
Transmission Control Protocol ◽  
Cost Effective ◽  
Local Area ◽  
Area Network ◽  
Large Set ◽  
Monitoring And Control ◽  
Finite State ◽  
Server Design ◽  
And Control

Abstract This paper introduces the concept of a networked controller that leverages the capability of web services. By doing so, it enables the implementation of a large set of factory monitoring and control equipment that is cost effective and manageable. By using the factory local area network for communication, and industrial computers based on standard hardware and software as the controller platform, cost is minimized. A networked solution based on Transmission Control Protocol / Internet Protocol (TCP/IP) allows the controller to communicate with factory engineers through their desktop computers as efficiently as it can with other computers. Engineers can set up each unit for its intended function by installing the appropriate sensors. Java applet technology is employed for remote setup and control. Controller requirements such as remote configuration, client processing, and data presentation are presented. A method for overcoming real time issues is proposed using a client/server design. A prototype was built to demonstrate some of the concepts. Discussions are then made on possible future work using a Finite State Machine design methodology to improve overall system reliability.

Wireless Starting System and Emergency Stop for Teleoperated Hydraulic Mobile Machine

2004 ◽  
Author(s):  
Jarno R. A. Uusisalo ◽  
Albert Raneda ◽  
Jani M. Vilenius ◽  
Kalevi J. Huhtala
Keyword(s):  
Control System ◽  
Wireless Local Area Network ◽  
Data Transfer ◽  
Local Area Network ◽  
Diagnostic System ◽  
Cost Effective ◽  
Area Network ◽  
Safe Place ◽  
Emergency Stop ◽  
Mobile Machine

A small general-purpose teleoperated hydraulic mobile machine is studied at the Institute of Hydraulics and Automation at the Tampere University of Technology. Thanks to teleoperation, the operator of the machine is able to be in safe place during the driving when necessary. However, the actions of the machine can be dangerous for the people or the objects in the environment if problems appear for instance in the control system. On that account, safety issues must be considered carefully. Special attention has to be paid to stop the machine and start the engine again once the machine has recovered from an error situation. The goal of this paper is to describe the design and implementation of different kind of solutions to start and stop the machine wirelessly. The emergency stop can be activated through the wireless connection by the operator or by the automatic diagnostic system of the hydraulic mobile machine. The control system monitors the state of several hydraulic components such as hydraulic valves and motors by means of sensors during the operations of machine. The machine is teleoperated by using WLAN (Wireless Local Area Network) connection. The developed wireless starting system and emergency stop is totally independent of the WLAN link. In the first prototype of the wireless starting system and emergency stop, the wireless connection is carried out by using commercial, cost effective RF (Radio Frequency) modules. The data transfer protocol which is used by the modules is designed for this application. Protocol implementation is carried out with microcontrollers. Another version of the wireless starting system and emergency stop is carried out by using radio modems. The modems have better properties than the cost effective RF modules used in the first prototype due to their higher RF output power. Programmatically carried out automatic emergency stop, which stops the machine, if the WLAN connection between the control station and the machine breaks, is discussed. In that case, the independent wireless emergency stop connection is not needed. Implementations of the system are introduced in this paper. Also, some testing results and user experiences are described. Properties of these different implementations are compared: cost of the system, range, reliability and complexity of the implementation. By means of the studied results the most suitable solution to start the engine and stop the actions of the machine is chosen.

Application of Linked Personal Computers for Automatic Control in Large Sewage Works

1992 ◽  
Vol 26 (5-6) ◽  
pp. 1375-1380
Author(s):  
M. Bongards ◽  
J. Braun ◽  
H. A. Feyen
Keyword(s):  
Automatic Control ◽  
Data Transfer ◽  
Local Area Network ◽  
Sewage Treatment ◽  
Operating Experience ◽  
Local Area ◽  
Personal Computers ◽  
Area Network ◽  
Real Process ◽  
High Investment

So far only very large sewage treatment plants (STP) are equipped with real process computers. High investment costs and complicated handling prevented their application in medium-sized and smaller STPs. Meanwhile Personal Computers became so efficient and reliable that they can be used for automatic control of industrial processes. In this paper the successful enlargement of the central STP of Stolberg-Steinfurt for 120,000 inhabitant equivalents is described. In the central facility seven linked personal computers co-operate in a local area network (LAN) for monitoring and optimization of different processes. They are connected with seven programmable controllers in outstations on site. The data transfer between the central control room and the outstations takes place using RS 232 C interfaces. Because of the use of common office computers in combination with industrially proved controllers the operators very soon accepted the system. After one year of operating experience they assess the system as a valuable tool.

scholarly journals Using netmeeting for remote configuration of the Otto Bock C-Leg: Technical considerations

2002 ◽  
Vol 26 (2) ◽  
pp. 154-158 ◽  
Author(s):  
E. D. Lemaire ◽  
J. A. Fawcett
Keyword(s):  
Data Transfer ◽  
Local Area Network ◽  
Cost Effective ◽  
Local Area ◽  
Area Network ◽  
Prosthetic Devices ◽  
Clinical Support ◽  
Peak Knee ◽  
Application Sharing ◽  
Use Of Internet

Telehealth has the potential to be a valuable tool for technical and clinical support of computer controlled prosthetic devices. This pilot study examined the use of Internet-based, desktop video conferencing for remote configuration of the Otto Bock C-Leg. Laboratory tests involved connecting two computers running Microsoft NetMeeting over a local area network (IP protocol). Over 56Kbs−1, DSL/Cable, and 10Mbs−1 LAN speeds, a prosthetist remotely configured a user's C-Leg by using Application Sharing, Live Video, and Live Audio. A similar test between sites in Ottawa and Toronto, Canada was limited by the notebook computer's 28Kbs−1 modem. At the 28Kbs-1 Internet-connection speed, NetMeeting's application sharing feature was not able to update the remote Sliders window fast enough to display peak toe loads and peak knee angles. These results support the use of NetMeeting as an accessible and cost-effective tool for remote C-Leg configuration, provided that sufficient Internet data transfer speed is available.

scholarly journals Design, Deployment and Implementation of Local Area Network (LAN) at BAEC Head Quarter

2021 ◽  
Vol 10 (5) ◽  
pp. 15-23
Author(s):  
Osman Goni
Keyword(s):  
Data Storage ◽  
Computer Network ◽  
Data Transfer ◽  
Local Area Network ◽  
Atomic Energy Commission ◽  
Distributed Processing ◽  
Geographical Area ◽  
Local Area ◽  
Area Network ◽  
Security Measures

A local area network (LAN) is a computer network within a small geographical area such as a home, school, computer laboratory, office building or group of buildings. A LAN is composed of interconnected workstations and personal computers which are each capable of accessing and sharing data and devices, such as printers, scanners and data storage devices, anywhere on the LAN. LANs are characterized by higher communication and data transfer rates and the lack of any need for leased communication lines. Communication between remote parties can be achieved through a process called Networking, involving the connection of computers, media and networking devices. When we talk about networks, we need to keep in mind three concepts, distributed processing, network criteria and network structure. The purpose of this Network is to design a Local Area Network (LAN) for a BAEC (Bangladesh Atomic Energy Commission) Head Quarter and implement security measures to protect network resources and system services. To do so, we will deal with the physical and logical design of a LAN. The goal of this Network is to examine of the Local Area Network set up for a BAEC HQ and build a secure LAN system.

Local Area Network Operations: A Security, Control and Audit Perspective

1990 ◽  
Vol 5 (2) ◽  
pp. 63-72 ◽  
Author(s):  
Rodger Jamieson ◽  
Graham Low
Keyword(s):  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Security Measures ◽  
Security Risks ◽  
Information Systems Management ◽  
Security Officers ◽  
Network Operations ◽  
And Control ◽  
Functional Areas

This paper provides a framework for the review of security and control within a local area network environment. Network operations are subdivided into several functional areas or components for further review. Each component or area is briefly explained and the security risks, issues and concerns highlighted. Controls and security measures are proposed as guidelines to counter these threats. An approach to the audit of each major area of network operations is proposed. This suggested framework provides guidance to information system security officers, auditors, communications and network administrators, consultants and information systems management for the review of local area network security during network operations.

Development of Field Control System of Automated Guided Vehicle Based on Wireless Local Area Network and CAN Bus

2013 ◽  
Vol 579-580 ◽  
pp. 792-797
Author(s):  
Yan Wang ◽  
Zhong Da Yu ◽  
Chen Xing Bao ◽  
Dong Xiang Shao
Keyword(s):  
Control System ◽  
Real Time ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Can Bus ◽  
Control Unit ◽  
Local Area ◽  
Automated Guided Vehicle ◽  
Area Network ◽  
Control Units

In this paper, we realize a real-time communication based on wireless local area network (WIFI) and controller area network (CAN) bus and develop a distributed control system for an automated guided vehicle (AGV). The system consists of two levels: (1) communication between AGVs and main computer based on WIFI, (2) communicationg between control units of AGV based on CAN bus. A real-time operating system μC/OS-II was used to control time, which significantly reduces the time for program and improves development efficiency. Finally, a small-size distributed AGV controller is developed as the main control unit of AGV and a distributed I/O system is developed based on it.

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