scholarly journals ArcoNet: A Proposal for a Standard Network for Communication and Control in Real-Time Performance

Leonardo ◽  
1990 ◽  
Vol 23 (1) ◽  
pp. 91
Author(s):  
Kristi Allik ◽  
Shane Dunne ◽  
Robert Mulder
Keyword(s):  
Real Time ◽  
Time Performance ◽  
And Control

Design and implementation of distributed asynchronous data aided computer information interaction system

2020 ◽  
Vol 39 (6) ◽  
pp. 9007-9014
Author(s):  
Jiwei Li
Keyword(s):  
Data Processing ◽  
Real Time ◽  
Management System ◽  
Prevention And Control ◽  
Time Performance ◽  
Interaction System ◽  
Information Interaction ◽  
Processing Ability ◽  
Virus Pneumonia ◽  
And Control

Under the influence of novel corona virus pneumonia epidemic prevention and control, it has put forward higher requirements for data storage and processing for personnel management system. The distributed asynchronous data aided computer information interaction system can solve the problem of multi node concurrent data processing. The traditional computer information interaction system has poor real-time performance, low precision and asynchronous data processing ability. The invocation features of message queuing asynchronous caching mode are combined with the standardization of Web services and cross language with cross platform access features in this paper. Through the combination of the two technologies, a flexible and universal asynchronous interaction architecture of distributed system is established. Based on Web service technology and system to system access, the call and response of tasks between modules are carried out in the system, which makes the interaction between the whole system have the characteristics of message driven. The test result shows that the system proposed in this paper has good real-time performance and strong data processing ability. It is suitable for the data interaction of distributed personal management system under the influence of novel corona virus pneumonia epidemic prevention and control.

Characteristic Analyzation of Cyber Physical Systems

2014 ◽  
Vol 484-485 ◽  
pp. 427-430
Author(s):  
Zhe Jun Kuang ◽  
Liang Hu ◽  
Chen Zhang
Keyword(s):  
Real Time ◽  
Heterogeneous Systems ◽  
Physical World ◽  
Cyber Physical Systems ◽  
Physical Processes ◽  
Physical Systems ◽  
Time Performance ◽  
Research Challenges ◽  
Computer Mediated ◽  
And Control

Cyber-physical systems (CPS) are complex distributed heterogeneous systems which integrating cyber and physical processes by computation, communication and control. During interaction between cyber and physical world, the traditional theories and applications has been difficult to satisfy real-time performance and efficient. Cyber-physical systems clearly have a role to play in developing a new theory of computer-mediated physical systems. The aim of this work is to analysis the features and relation technology of CPS that get better understanding for this new field. We summarized the research progresses from different perspectives such as modeling, classical tools and applications. Finally, the research challenges for CPS are in brief outlined.

A CORBA-based simulation and control framework for mobile robots

Robotica ◽  
2009 ◽  
Vol 27 (3) ◽  
pp. 459-468 ◽  
Author(s):  
Zhang Zhen ◽  
Cao Qixin ◽  
Charles Lo ◽  
Zhang Lei
Keyword(s):  
Mobile Robots ◽  
Real Time ◽  
Distributed System ◽  
Map Building ◽  
Time Performance ◽  
Control Functions ◽  
Simulation And Control ◽  
Robot Configuration ◽  
Index Value ◽  
And Control

SUMMARYThis paper presents a distributed multiple mobile robots framework which allows programming and control of virtual and real mobile robots. The system provides the map building, path planning, robot task planning, simulation, and actual robot control functions in an indoor environment. Users can program the virtual robots in a customized simulation environment and check the performance of execution, i.e., if the simulation result is satisfying, users can download the code to a real robot. The paper focuses on the distributed architecture and key technologies of virtual robots simulation and control of real robots. A method for construction and transfer of a key index value (which stores the robot configuration) is proposed. Using this method, only the robot key configuration index is needed to build the robot in the virtual environment. This results in reduced network load and improved real time performance of the distributed system. Experiments were conducted to compare the performance of the proposed system with the performance of a centralized system. The results show that the distributed system uses less system resources and has better real time performance. What is more, this framework has been applied to Yaskawa's robot “SmartPal.” The simulation and experiment results show that our robotic framework can simulate and control the robot to perform complex tasks.

Design of an Information Integration Control Network for Hybrid Electric Trucks

2013 ◽  
Vol 694-697 ◽  
pp. 2572-2575
Author(s):  
Jun Xu ◽  
Gang Yan Li ◽  
Fei Yang
Keyword(s):  
Real Time ◽  
Information Integration ◽  
Control Strategies ◽  
Bench Test ◽  
Control Network ◽  
Signal Acquisition ◽  
Time Performance ◽  
Load Rate ◽  
Hybrid Electric ◽  
And Control

In view of the requirements on multi-target information interaction and implementing complicated control strategies among different ECUs in hybrid electric trucks, an information integration control network based on CAN bus is proposed. A HCS12 dual-core processor MC9S12XDG128 is adopted to design an information integration module for sensor signal acquisition and data transmission in the network. Application layer protocol is defined to optimize the message transmission mechanism. Meanwhile, Rate Monotonic Analysis (RMA) method is adopted to analyze bus load rate and real-time performance of the network. Bench test results have shown that the designed information integration control network for hybrid electric trucks owns good real-time performance and is reliable to implement communication and control tasks with low bus load rate.

Development of Public Lighting Remote Monitoring System Controller

2012 ◽  
Vol 433-440 ◽  
pp. 7400-7406
Author(s):  
Mei Qian Chen ◽  
Tun Dong Liu ◽  
Wen Bo Zhou ◽  
Rong Jie Wang
Keyword(s):  
Automatic Control ◽  
Data Acquisition ◽  
Energy Saving ◽  
Real Time ◽  
Monitoring System ◽  
Remote Monitoring ◽  
Remote Monitoring System ◽  
Time Performance ◽  
Intelligent Management ◽  
And Control

To realize the efficient and stable real-time monitoring and intelligent management of the urban public lighting, the remote monitoring system is developed. The system is composed of monitoring center and monitoring terminals, and realizes network connection via the advanced remote wireless communication technology GPRS. It uses TI Company’s MSP430 processor chip as the monitoring terminal controller, which integrates automatic control, data acquisition, communication and other technologies and has such functions as monitoring, remote control, anti-electricity theft, remote meter reading and communication. It’s proved by practice that the designed controller features reliable running, sound real-time performance and low cost, and has a broad and bright application prospect. The monitoring and management of public lighting is a typical sector and important part of the civil work. Due to the continuous development of urban construction and ever-enlarging lighting coverage, the traditional lighting management methods can not realize centralized monitoring, have poor real-time performance and cost lots of human and material resources; thus, can not satisfy the requirements of energy saving and efficiency improvement[1]. GPRS (General Packet Radio Service), the wireless packet exchange technology based on the second generation mobile communication system GSM, is very suitable for transmitting non-continuous, unexpected and small sets of street lamp monitoring data. Also, quick & easy log-on, real-time online, high-speed transmission, sound economical efficiency and many other advantages make GPRS become the first choice for remote measurement and control system[2]. Therefore, the development of GPRS-based public lighting remote monitoring system becomes a necessity. The designed monitoring system in this article is a typical distributed monitoring and data acquisition system integrating computer technologies, modern communication technologies and automatic control technologies. It conducts centralized monitoring and control on the cabinet transformer substations, transformer cabinets, control cabinets and other slave monitoring systems of the public lighting such as street lamps and landscape lamps of the city, to realize the real-time, remote monitoring and intelligent management of public lighting and ensure the efficient, all-weather running and on-demand, energy-saving lighting.

Microstructural investigation of surface roughness in MBE-grown AlAs

1995 ◽  
Vol 53 ◽  
pp. 454-455
Author(s):  
R. Rajesh ◽  
R. Droopad ◽  
C. H. Kuo ◽  
R. W. Carpenter ◽  
G. N. Maracas
Keyword(s):  
Thin Film ◽  
Real Time ◽  
Growth Control ◽  
Native Oxide ◽  
Effusion Cell ◽  
Surface Oxide Layer ◽  
Microstructural Investigation ◽  
Mbe Growth ◽  
Film Substrate ◽  
And Control

Knowledge of material pseudodielectric functions at MBE growth temperatures is essential for achieving in-situ, real time growth control. This allows us to accurately monitor and control thicknesses of the layers during growth. Undesired effusion cell temperature fluctuations during growth can thus be compensated for in real-time by spectroscopic ellipsometry. The accuracy in determining pseudodielectric functions is increased if one does not require applying a structure model to correct for the presence of an unknown surface layer such as a native oxide. Performing these measurements in an MBE reactor on as-grown material gives us this advantage. Thus, a simple three phase model (vacuum/thin film/substrate) can be used to obtain thin film data without uncertainties arising from a surface oxide layer of unknown composition and temperature dependence.In this study, we obtain the pseudodielectric functions of MBE-grown AlAs from growth temperature (650°C) to room temperature (30°C). The profile of the wavelength-dependent function from the ellipsometry data indicated a rough surface after growth of 0.5 μm of AlAs at a substrate temperature of 600°C, which is typical for MBE-growth of GaAs.

Adaptive Signal Analysis and Interpretation for Real-time Intelligent Patient Monitoring

1994 ◽  
Vol 33 (01) ◽  
pp. 60-63 ◽  
Author(s):  
E. J. Manders ◽  
D. P. Lindstrom ◽  
B. M. Dawant
Keyword(s):  
Computer Architecture ◽  
Real Time ◽  
Data Abstraction ◽  
Monitoring Strategy ◽  
Intelligent Monitoring ◽  
Patient Status ◽  
On Line ◽  
Main Components ◽  
And Control ◽  
Adaptive Signal

Abstract:On-line intelligent monitoring, diagnosis, and control of dynamic systems such as patients in intensive care units necessitates the context-dependent acquisition, processing, analysis, and interpretation of large amounts of possibly noisy and incomplete data. The dynamic nature of the process also requires a continuous evaluation and adaptation of the monitoring strategy to respond to changes both in the monitored patient and in the monitoring equipment. Moreover, real-time constraints may imply data losses, the importance of which has to be minimized. This paper presents a computer architecture designed to accomplish these tasks. Its main components are a model and a data abstraction module. The model provides the system with a monitoring context related to the patient status. The data abstraction module relies on that information to adapt the monitoring strategy and provide the model with the necessary information. This paper focuses on the data abstraction module and its interaction with the model.

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