Design and control of material transport system for automated guided vehicle

2012 ◽  
Author(s):  
Xing Wu ◽  
Peihuang Lou ◽  
Qixiang Cai ◽  
Chidong Zhou ◽  
ke Shen ◽  
...  
Keyword(s):  
Transport System ◽  
Automated Guided Vehicle ◽  
Material Transport ◽  
And Control

Design of an Intelligent Remote Monitoring and Control of Bangladesh Railway Transport System Using Information and Communication Technologies (ICTs)

2008 ◽  
Author(s):  
Md. Abdullah Al Harun Khan Chowdhury
Keyword(s):  
Information And Communication Technologies ◽  
Transport System ◽  
Asset Management ◽  
Communication Technologies ◽  
Transport Systems ◽  
Railway Transport ◽  
Sensors And Actuators ◽  
Efficient Operation ◽  
Information And Communication ◽  
And Control

In Bangladesh, transport sectors are developing rapidly to meet the increasing demand for transporting passengers and freight inside and outside the country. But there is not such development in railway transport system. The Bangladesh Railway transport system is still using an old technology to monitor and control signalling, scheduling, operations etc. This paper describes various problems in the existing systems and also solutions have been provided considering the existing railway transport systems of Bangladesh. A new system has been developed to control and monitor the total railway transport system from remote locations. While designing the system, various sensors and actuators have been introduced and also Information and Communication Technologies (ICTs) have been applied in the field of railway transport. So a Machatronics aspect of system has been designed to ensure a collision free, safe and efficient operation and management of railway transport system. This system is not only for monitoring and controlling of railway transport but also ensures efficient asset management. As a result face-to-face accidents, cross-road accidents and accidents due to railway line displacements or breakage can be avoided and there will be no loss of assets and valuable human lives.

scholarly journals Kinetics and mechanism of planar nanowire growth

2019 ◽  
Vol 117 (1) ◽  
pp. 152-160 ◽  
Author(s):  
Amnon Rothman ◽  
Vladimir G. Dubrovskii ◽  
Ernesto Joselevich
Keyword(s):  
Surface Diffusion ◽  
Large Scale ◽  
Nanowire Growth ◽  
Power Exponent ◽  
Material Transport ◽  
Guided Growth ◽  
Large Scale Integration ◽  
Scale Integration ◽  
And Control ◽  
Kinetics Of

Surface-guided growth of planar nanowires offers the possibility to control their position, direction, length, and crystallographic orientation and to enable their large-scale integration into practical devices. However, understanding of and control over planar nanowire growth are still limited. Here, we study theoretically and experimentally the growth kinetics of surface-guided planar nanowires. We present a model that considers different kinetic pathways of material transport into the planar nanowires. Two limiting regimes are established by the Gibbs–Thomson effect for thinner nanowires and by surface diffusion for thicker nanowires. By fitting the experimental data for the length–diameter dependence to the kinetic model, we determine the power exponent, which represents the dimensionality of surface diffusion, and results to be different for planar vs. nonplanar nanowires. Excellent correlation between the model predictions and the data is obtained for surface-guided Au-catalyzed ZnSe and ZnS nanowires growing on both flat and faceted sapphire surfaces. These data are compared with those of nonplanar nanowire growth under similar conditions. The results indicate that, whereas nonplanar growth is usually dominated by surface diffusion of precursor adatoms over the nanowire walls, planar growth is dominated by surface diffusion over the substrate. This mechanism of planar nanowire growth can be extended to a broad range of material–substrate combinations for higher control toward large-scale integration into practical devices.

scholarly journals Design and Control of Automated Guided Vehicle Systems: A Case Study

2011 ◽  
Vol 44 (1) ◽  
pp. 13852-13857 ◽  
Author(s):  
Q. Li ◽  
A.C. Adriaansen ◽  
J.T. Udding ◽  
A.Y. Pogromsky
Keyword(s):  
Automated Guided Vehicle ◽  
Vehicle Systems ◽  
And Control

scholarly journals A survey in the design and control of automated guided vehicle systems

2019 ◽  
Vol 12 (2) ◽  
pp. 41-49
Author(s):  
A. P. Vancea ◽  
I. Orha
Keyword(s):  
Production System ◽  
Production Efficiency ◽  
Ground Level ◽  
Small Scale ◽  
Automated Guided Vehicle ◽  
Total Production ◽  
Automatic Guided Vehicles ◽  
Small Scale Industry ◽  
Vehicle Systems ◽  
And Control

Abstract Automatic guided vehicles (AGVs) play an important role in the small-scale industry as well as the largescale industry in handling materials inside factories from one place to another. In the last days, the materials to be handled are more numerous and as production and demand increase, it strongly influences the transport of materials in desperate need of a vehicle to distribute, position the materials within the industry. AGVs are generally installed with wires at ground level and signals are transmitted through them to be controlled. Due to the emergence of the AGV, the workload of the human being gradually decreased and the production efficiency increased. Thus, the need for an AGV has become more technologically important in the advanced robotic world. Normally, these systems are integrated into a global production system, where is a need to make direct changes in the design and planning of the floor store to get most of them. But in the rapidly changing production system and the adaptable floor store, the implementation of AGV has become very important and difficult, because it depends on many systems, such as wires, frequency, total production, etc. Therefore, it is necessary to develop an independent AGV, which can operate on its own and make decisions based on changes in the environment.

scholarly journals Formalized model and algorithm for managing complex interaction of heterogeneous transport

2021 ◽  
Vol 2061 (1) ◽  
pp. 012118
Author(s):  
A P Shramko
Keyword(s):  
Transport System ◽  
Heterogeneous Systems ◽  
Complex Interaction ◽  
Transport Processes ◽  
Point Of View ◽  
Transport Systems ◽  
Integrated Regulation ◽  
Local Transport ◽  
And Control ◽  
Efficiency And Reliability

Abstract The problem of ensuring the reliability of heterogeneous transport systems is extremely multifaceted and covers all stages of development - from design to operation. To increase efficiency, there is a need to harmonize the processes taking place in heterogeneous systems within the framework of single transport communication. The lack of appropriate theoretical justification leads in practice to the emergence of insufficiently substantiated decisions, because of which subsequent efforts made to eliminate the discovered shortcomings are, as a rule, costly and ineffective. Assessment of the system of integrated regulation of the transport system, from the point of view of its sustainability, is an indispensable condition for its operational efficiency and reliability. The efficiency of transport processes assumes that the effective functioning of local transport systems is ensured by the level of interaction between participants in the transport process, modes of transport that create positive dynamics of transit freight turnover. The paper substantiates the need for complex interaction in the management of the regional transport system, considering the interaction of adjacent modes of transport in a single information space. The method describes in detail the solution of forecasting and coordination problems in maritime transport systems, harmonization of the interests of heterogeneous transport in solving forecasting and control problems.

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