scholarly journals Discussion on Integrated Design of Emergency Storage Facilities for Dangerous Chemicals Transportation Accidents and Bridge Drainage Run off Treatment Facilities of Expressway

2020 ◽  
Vol 145 ◽  
pp. 02045
Author(s):  
Jing Zhao ◽  
Shegang Shao ◽  
Dong Ni ◽  
Minmin Yuan ◽  
Dong Zhang ◽  
...  
Keyword(s):  
Bridge Deck ◽  
Functional Unit ◽  
Integrated Design ◽  
Simultaneous Treatment ◽  
Run Off ◽  
Treatment Facilities ◽  
Rainwater Runoff ◽  
Design Idea ◽  
And Control ◽  
Flow Plane

Based on the investigation on the collection and treatment of the runoff from the bridge-deck of some expressways involving sensitive water bodies, this paper proposed an integrated design idea of the emergency storage facility and the bridge-deck rainwater runoff treatment facility for the transportation accident of dangerous chemicals in the expressway. The integrated design idea improves the disadvantages of simultaneous treatment of rainwater and accident-water in the bridge-deck runoff treatment system. The process flow, plane layout, functional unit volume design, conversion device, and control system involved in the integrated design are discussed.

scholarly journals Integrated Design of Facilities and Control Systems in the Context of Regional Sustainable Development

2021 ◽  
pp. 007-025
Author(s):  
O. V. Milovanova ◽  
◽  
N. S. Popov ◽  
A. A. Balamutova ◽  
◽  
...  
Keyword(s):  
Sustainable Development ◽  
Control Systems ◽  
Integrated Design ◽  
Long Distance ◽  
Future Challenges ◽  
The Face ◽  
Regional Sustainable Development ◽  
Treatment Facilities ◽  
And Control ◽  
Functional Transformations

The strategy for managing the process of sustainable development is reduced to the need for periodic implementation of structural and functional transformations in the objects of the regional economy, arising from the objective appearance of qualitatively new challenges (disturbances) from society and nature. At the same time, the design of new and reconstruction of existing facilities with a long service life (more than 20 years) should be aimed at the preventive elimination of challenges not only of the present, but also of the future. Long-distance calls need to be predicted and taken into account in order to reduce the overhead of object evolution. The problem of reconstruction of urban treatment facilities together with a control system is considered in order to ensure their operability in the face of uncertainty of future challenges.

scholarly journals Study of the effect of inter-pass temperature on weld overlap start-stop defects and mitigation by application of laser defocusing

2021 ◽  
Vol 114 (1-2) ◽  
pp. 117-130
Author(s):  
Wai Jun Lai ◽  
Supriyo Ganguly ◽  
Wojciech Suder
Keyword(s):  
Thermal Cycle ◽  
Laser Initiation ◽  
Thick Section ◽  
Keyhole Welding ◽  
Run Off ◽  
And Control ◽  
Laser Keyhole Welding

AbstractLaser keyhole initiation and termination-related defects, such as cracking and keyhole cavities due to keyhole collapse, are a well-known issue in laser keyhole welding of thick section steels. In longitudinal welding, run-on and run-off plates are used to avoid this problem. However, such an approach is not applicable in circumferential welding where start/stop defects remain within the workpiece. These issues can hinder industry from applying laser keyhole welding for circumferential welding applications. In this paper, the effect of inter-pass temperature on laser keyhole initiation and termination at the weld overlap start-stop region was investigated. This study has identified that defects occurring within this region were due to laser termination rather than laser initiation because of keyhole instabilities regardless of the thermal cycle. The laser termination defects were mitigated by applying a laser defocusing termination regime to reduce the keyhole depth gradually and control the closure of the keyhole.

Application of PID in Controllable Pitch Propeller of a Multipurpose Ocean Tug

2013 ◽  
Vol 464 ◽  
pp. 253-257
Author(s):  
Hui Fang Chen
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
High Reliability ◽  
Control Process ◽  
Good Control ◽  
Control Performance ◽  
Hardware Configuration ◽  
Design Idea ◽  
And Control

This paper takes the automatic control system of controllable pitch propeller in a multipurpose ocean tug as an example to describe the application of the S7-200 series PLC in the control system of 4500 horse power controllable pitch propeller in detail. The principle of control system is addressed, as well as the hardware configuration, the design idea of the main software and control process. The system shows high reliability, accuracy and good control performance in practical in practical running.

Integrated Design and Control of Active Aerodynamic Features for High Performance Electric Vehicles

2021 ◽  
Author(s):  
Alessandro Ferraris ◽  
Davide De Cupis ◽  
Henrique de Carvalho Pinheiro ◽  
Alessandro Messana ◽  
Lorenzo Sisca ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
High Performance ◽  
Integrated Design ◽  
And Control

scholarly journals Control of Systems of Reservoirs with the Use of Risk Analysis

10.14311/538 ◽  
2004 ◽  
Vol 44 (2) ◽  
Author(s):  
P. Fošumpaur ◽  
L. Satrapa
Keyword(s):  
Risk Analysis ◽  
Flood Control ◽  
Water System ◽  
Water Reservoir ◽  
The Czech Republic ◽  
Run Off ◽  
Hydropower Plants ◽  
Basic Functions ◽  
And Control

A system of reservoirs is usually defined as a system of water management elements, that are mutually linked by inner and outer connections in a purpose-built complex. Combined elements consist of reservoirs, river sections, dams, weirs, hydropower plants, water treatment plants and other hydraulic structures. These elements also include the rainfall system, the run-off system, the ground water system, etc. A system of reservoirs serves many purposes, which result from the basic functions of water reservoirs: storage, flood control and environmental functions. Most reservoirs serve several purposes at the same time. They are so called multi-purposes reservoirs. Optimum design and control of a system of reservoirs depends strongly on identifying the particular purposes. In order to assess these purposes and to evaluate the appropriate set of criteria, risk analysis can be used. Design and control of water reservoir functions is consequently solved with the use of multi-objective optimisation. This paper deals with the use of the risk analysis to determine criteria for controlling the system. This approach is tested on a case study of the Pastviny dam in the Czech Republic.

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