scholarly journals A three-dimensional intelligent engineering management and control system for the construction of a long-span valve hall project based on a microservice architecture

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261012
Author(s):  
Qinghe Zeng ◽  
WeiHua Ming ◽  
Jin Luo ◽  
SongAn Zhang ◽  
Wei Hu ◽  
...  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Construction Management ◽  
Three Dimensional ◽  
Engineering Management ◽  
Engineering Structures ◽  
Entire Process ◽  
Long Span ◽  
And Control ◽  
Microservice Architecture

Three-dimensional intelligent engineering management and control systems (EMCS) based on the browser/server (B/S) model are an important part of intelligent engineering development. These systems are used for solving the difficulties encountered in engineering management with frequent cross-specialties and are vital tools for data exchange and service sharing among multiple departments. Currently, most engineering management and control systems are based on service-oriented architectures (SOAs). The integration mechanism and high coupling of SOAs leads to the reduction in system expansibility, service quality and service safety of the engineering system, making it difficult for these architectures to serve the construction of long-span valve hall engineering. To address these concerns, the management and application technology of the multidisciplinary data of valve hall engineering based on a microservice architecture (MSA) is proposed to improve the management efficiency of engineering data. A 3D integration modeling method for valve hall engineering structures and geological environments is proposed to establish the topological association between engineering structures and geological environments, without increasing the amount of model data required. A 3D intelligent engineering management and control technology for the entire process of the construction of long-span valve hall engineering is proposed, which realizes the entire process simulation and control of engineering construction based on WebGL technology. Accordingly, a three-dimensional intelligent engineering management and control system for the entire construction process of a long-span valve hall project in Southeast China is established, which can effectively manage and apply the data, display and analyze the three-dimensional model, and control and make decisions regarding the construction schedule. This study provides support for the construction of "smart engineering", promotes information communication and transmission between different project units, and speeds up the transformation from traditional construction management relying on drawings to three-dimensional intelligent construction management based on cloud services.

Reliability analysis and safety model checking of Safety-Critical and control Systems: A case study of NPP control system

2022 ◽  
Vol 166 ◽  
pp. 108812
Author(s):  
Vinay Kumar ◽  
Kailash Chandra Mishra ◽  
Pooja Singh ◽  
Aditya Narayan Hati ◽  
Mohan Rao Mamdikar ◽  
...  
Keyword(s):  
Control System ◽  
Model Checking ◽  
Reliability Analysis ◽  
Control Systems ◽  
Safety Critical ◽  
And Control

Performance Analysis of Integrated Communication and Control System Networks

1990 ◽  
Vol 112 (3) ◽  
pp. 365-371 ◽  
Author(s):  
Y. Halevi ◽  
A. Ray
Keyword(s):  
Control System ◽  
Statistical Analysis ◽  
Performance Analysis ◽  
Control Systems ◽  
Manufacturing Plants ◽  
Asynchronous Time Division Multiplexing ◽  
Processing Plants ◽  
Integrated Communication ◽  
Time Division ◽  
And Control

This paper presents statistical analysis of delays in Integrated Communication and Control System (ICCS) networks [1–4] that are based on asynchronous time-division multiplexing. The models are obtained in closed form for analyzing control systems with randomly varying delays. The results of this research are applicable to ICCS design for complex dynamical processes like advanced aircraft and spacecraft, autonomous manufacturing plants, and chemical and processing plants.

Development of Instrumentation and Control Systems for UK ABWR

2017 ◽  
Author(s):  
Itsuki Naito ◽  
Taisuke Koyamada ◽  
Keisuke Yamamoto ◽  
Kingo Igarashi ◽  
Hideo Harada ◽  
...  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Good Practice ◽  
Operating Experience ◽  
Severe Accident ◽  
Regulatory Regime ◽  
Design Assessment ◽  
Class 1 ◽  
The Uk ◽  
And Control

This paper introduces the Instrumentation and Control (I&C) system for the proposed UK Advanced Boiling Water Reactor (UK ABWR) offered by Hitachi-GE Nuclear Energy, Ltd (Hitachi-GE). Hitachi-GE has been progressing the UK Generic Design Assessment (GDA) licensing process over the last 3 years. This is the process through which the Office for Nuclear Regulations (ONR) assesses the UK ABWR for suitability from a nuclear safety, security, environmental protection and waste management perspective and it is the first step towards proceeding with the construction phase in the UK. ONR’s regulatory expectations setting out relevant good practice are described in the Safety Assessment principles (SAPs), which are considered into the I&C design for UK ABWR. In addition, it has also been designed to take into account relevant good practices and regulations. In accordance with expectations derived from SAPs, the UK ABWR I&C systems are categorized and classified as required by IEC 61513 and IEC 61226. In addition, the overall I&C architecture, including all associated Human-Machine Interfaces (HMIs), abides by the principles independence and diversity of safety measures, segregation and separation of the protection and control systems. As a result, the UK ABWR I&C architecture is composed of major eight sub-systems. The eight sub-systems are: -Safety System Logic and Control system (SSLC) -Hardwired Backup System (HWBS) -Safety Auxiliary Control System (SACS) -Plant Control System (PCntlS) -Reactor/Turbine Auxiliary Control System (RTACS) -Plant Computer System (PCS) -Severe Accident Control and Instrumentation system (SA C&I) -Other dedicated C&I systems. The features for each sub-system such as redundancy of safety train or segregation among divisions are specified so that each sub-system will achieve its reliability as well as increase availability. While in the Japanese ABWR safety I&C system, the main protection system (SSLC), is microprocessor-based from the decades of successful operating experience in the past BWR, to meet the UK regulatory regime expectation on diversity between Class 1 platform and non-Class 1 platform, the SSLC (Class 1) for the UK ABWR is by Field Programmable Gate Array (FPGA). This system is currently under development and complies with IEC 62556. Its safety integrity level is planned to be SIL 3 (as a single division) and SIL 4 (as a four division system) as defined in IEC 61508. The HMIs which constitute an integral part of the I&C systems are also designed to comply with the I&C architecture regarding their categorization and classification with consideration of Human Factors (HF) modern methods taken into accounts.

scholarly journals PROPOSAL FOR NAVIGATION AND CONTROL SYSTEM FOR SMALL UAV

Aviation ◽  
2010 ◽  
Vol 14 (3) ◽  
pp. 77-82 ◽  
Author(s):  
Grzegorz Kopecki ◽  
Jacek Pieniążek ◽  
Tomasz Rogalski ◽  
Pawel Rzucidło ◽  
Andrzej Tomczyk
Keyword(s):  
Control System ◽  
Control Systems ◽  
Human Factor ◽  
General Structure ◽  
Failure Detection ◽  
System Reconfiguration ◽  
University Of Technology ◽  
Small Uav ◽  
Navigation And Control ◽  
And Control

The article presents the project of UAV control system realized at Department of Avionics and Control Systems of Rzeszów University of Technology. The project is based on earlier experiences. In the article general structure of the onboard control system is shown as well as the structure of control station. There are described in proposed control and navigation procedures as well as human factor, failure detection and system reconfiguration. Santrauka Šiame straipsnyje aprašomas bepiločiu orlaiviu kontroles sistemos projekto lgyvendinimas Ržešovo technologijos universiteto Aviadjos prietaisu ir kontroles sistemu katedroje. Projektas atliktas remiantis ankstesne patirtimi. Pateikta ne tik borto sistemu bendroji struktūra, bet ir kontroles stočiu struktūra. Darbe nagrinejamas žmogaus veiksnys, gedimu aptikimas ir sistemu rekonfigūravimas pasiūlytose kontroles ir navigacijos procedūrose.

Compensation of Measurement Precision for Three-Dimensional Position Measurement Device Based on Disturbance Observer

2011 ◽  
Vol 23 (1) ◽  
pp. 75-82
Author(s):  
Toshiaki Matsumoto ◽  
◽  
Satoru Takahashi
Keyword(s):  
Control System ◽  
Control Systems ◽  
Disturbance Observer ◽  
Three Dimensional ◽  
Measurement Precision ◽  
Significant Issue ◽  
Position Measurement ◽  
Positioning Precision ◽  
Unknown Disturbances ◽  
Series Of Experiments

Improvements in measurement precision will constitute a significant issue in designing control systems formeasurement devices. Specifically, positioning precision may be decreased if unpredicted disturbances from the environment are not taken into account. In this paper, we first estimate unknown disturbances based on the disturbance observer, then design control systems which can reduce the effects of such disturbances to propose a control system capable of compensating for any decreases in measurement precision due to such disturbances, and finally demonstrate the effectiveness of the proposed control system through a series of experiments.

scholarly journals Conceptual solutions for control systems of differential tensioners for belt conveyors

2021 ◽  
Vol 7 (4) ◽  
pp. 316-327
Author(s):  
K.A. Goncharov ◽  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traction Force ◽  
Tension Control ◽  
Belt Conveyor ◽  
Load Carrying ◽  
New Type ◽  
Belt Conveyors ◽  
Tension Control System ◽  
And Control

Differential tensioning devices for belt conveyors in general and intermediate drives of extended conveyors in the form of closed traction loops are a new type of automatic tensioning devices that differ from other known designs by the presence of a stepwise discrete belt tension control system with separation of compensation functions for belt stretching under load and control of its tension during the operation of the conveyor in order to create optimal modes of belt loading. The article analyzes the well-known and practical concepts of belt conveyor control systems in general. The possibility of controlling the traction force realized by the intermediate belt drive by controlling the tension of the traction and load-carrying belts is shown. On the basis of the analysis, conceptual solutions for control systems for differential tensioning devices of belt conveyors are proposed with the possibility of both autonomous use and application in the structure of an integrated conveyor control system. Possible structures of linear parts of differential tensioning devices are presented, as well as options for the implementation of executive parts that directly move tensioning elements.

scholarly journals Power Level Control of Nuclear Power Plant Based on Asymptotical State Observer under Neutron Sensor Fault

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Liming Zhang ◽  
Hongyun Xie ◽  
Qizhi Duan ◽  
Chao Lu ◽  
Jixue Li ◽  
...  
Keyword(s):  
Control System ◽  
Power Control ◽  
Control Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Power Level ◽  
Level Control ◽  
Power Control System ◽  
Neutron Sensors ◽  
And Control

Power level control is one of the critical functions in the instrument and control system of nuclear power plants (NPPs). In most power level control systems of NPPs, the power level or average neutron flux in reactor cores provided by out-of-core neutron sensors are usually measured as feedback of power control systems, while, as critical measuring devices, there is a risk of damage to out-of-core neutron sensors. For improving the operation reliability of NPPs under the neutron sensors’ failure, a power control system based on power observer is developed in this work. The simulation based on NPP simulator shows the power control system based on the observer is effective when neutron sensors fail.

scholarly journals Three-Dimensional Modeling and Control of a Tethered UAV-Buoy System

2021 ◽  
Author(s):  
Ahmad Kourani ◽  
Naseem Daher
Keyword(s):  
Control System ◽  
Three Dimensional ◽  
Vertical Motion ◽  
Robotic System ◽  
Three Dimensions ◽  
Spherical Coordinate ◽  
Nonlinear Dynamical ◽  
Modeling And Control ◽  
Three Dimensional Modeling ◽  
And Control

Abstract This work presents the nonlinear dynamical model and motion controller of a system consisting of an unmanned aerial vehicle (UAV) that is tethered to a floating buoy in the three-dimensional (3D) space. Detailed models of the UAV, buoy, and the coupled tethered system dynamics are presented in a marine environment that includes surface-water currents and oscillating gravity waves, in addition to wind gusts. This work extends the previously modeled planar (vertical) motion of this novel robotic system to allow its free motion in all three dimensions. Furthermore, a Directional Surge Velocity Control System (DSVCS) is hereby proposed to allow both the free movement of the UAV around the buoy when the cable is slack, and the manipulation of the buoy’s surge velocity when the cable is taut. Using a spherical coordinate system centered at the buoy, the control system commands the UAV to apply forces on the buoy at specific azimuth and elevation angles via the tether, which yields a more appropriate realization of the control problem as compared to the Cartesian coordinates where the traditional x- , y- , and z -coordinates do not intuitively describe the tether’s tension and orientation. The proposed robotic system and controller offer a new method of interaction and collaboration between UAVs and marine systems from a locomotion perspective. The system is validated in a virtual high-fidelity simulation environment, which was specifically developed for this purpose, while considering various settings and wave scenarios.

scholarly journals Analyzing the Impact of Cybersecurity on Monitoring and Control Systems in the Energy Sector

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 218
Author(s):  
Mohammed Alghassab
Keyword(s):  
Control System ◽  
Control Systems ◽  
Cyber Security ◽  
Energy Sector ◽  
Industrial Control System ◽  
Monitoring And Control ◽  
Industrial Control ◽  
Industrial Control Systems ◽  
Monitoring And Control Systems ◽  
And Control

Monitoring and control systems in the energy sector are specialized information structures that are not governed by the same information technology standards as the rest of the world’s information systems. Such industrial control systems are also used to handle important infrastructures, including smart grids, oil and gas facilities, nuclear power plants, water management systems, and so on. Industry equipment is handled by systems connected to the internet, either via wireless or cable connectivity, in the present digital age. Further, the system must work without fail, with the system’s availability rate being of paramount importance. Furthermore, to certify that the system is not subject to a cyber-attack, the entire system must be safeguarded against cyber security vulnerabilities, threats, and hazards. In addition, the article looks at and evaluates cyber security evaluations for industrial control systems, as well as their possible impact on the accessibility of industrial control system operations in the energy sector. This research work discovers that the hesitant fuzzy-based method of the Analytic Hierarchy Process (AHP) and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) is an operational procedure for estimating industrial control system cyber security assessments by understanding the numerous characteristics and their impacts on cyber security industrial control systems. The author evaluated the outputs of six distinct projects to determine the quality of the outcomes and their sensitivity. According to the results of the robustness analysis, alternative 1 shows the utmost effective cybersecurity project for the industrial control system. This research work will be a conclusive reference for highly secure and managed monitoring and control systems.

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