Design and control characteristics of guidance system for passive maglev transport system

2016 ◽  
Author(s):  
Younghak Lee ◽  
Jin-Woo Park ◽  
Chang-Wan Ha ◽  
Jaewon Lim ◽  
Chang-Hyun Kim
Keyword(s):  
Transport System ◽  
Guidance System ◽  
And Control

scholarly journals Autonomous Underwater Vehicles and Field of View in Underwater Operations

2021 ◽  
Vol 9 (3) ◽  
pp. 277
Author(s):  
Isaac Segovia Ramírez ◽  
Pedro José Bernalte Sánchez ◽  
Mayorkinos Papaelias ◽  
Fausto Pedro García Márquez
Keyword(s):  
Autonomous Underwater Vehicles ◽  
Underwater Vehicles ◽  
Field Of View ◽  
Guidance System ◽  
Control Algorithms ◽  
Deep Waters ◽  
Underwater Cameras ◽  
Optimal Resolution ◽  
Acquisition Processes ◽  
And Control

Submarine inspections and surveys require underwater vehicles to operate in deep waters efficiently, safely and reliably. Autonomous Underwater Vehicles employing advanced navigation and control systems present several advantages. Robust control algorithms and novel improvements in positioning and navigation are needed to optimize underwater operations. This paper proposes a new general formulation of this problem together with a basic approach for the management of deep underwater operations. This approach considers the field of view and the operational requirements as a fundamental input in the development of the trajectory in the autonomous guidance system. The constraints and involved variables are also defined, providing more accurate modelling compared with traditional formulations of the positioning system. Different case studies are presented based on commercial underwater cameras/sonars, analysing the influence of the main variables in the measurement process to obtain optimal resolution results. The application of this approach in autonomous underwater operations ensures suitable data acquisition processes according to the payload installed onboard.

Three-dimensional adaptive fixed-time guidance law against maneuvering targets with impact angle constraints and control input saturation

2021 ◽  
pp. 014233122110598
Author(s):  
Fei Ma ◽  
Yunjie Wu ◽  
Siqi Wang ◽  
Xiaofei Yang ◽  
Yueyang Hua
Keyword(s):  
Sliding Mode ◽  
Input Saturation ◽  
Three Dimensional ◽  
Fixed Time ◽  
Impact Angle ◽  
Guidance System ◽  
Control Input ◽  
Guidance Law ◽  
The Stability ◽  
And Control

This paper presents an adaptive fixed-time guidance law for the three-dimensional interception guidance problem with impact angle constraints and control input saturation against a maneuvering target. First, a coupled guidance model formulated by the relative motion equation is established. On this basis, a fixed-time disturbance observer is employed to estimate the lumped disturbances. With the help of this estimation technique, the adaptive fixed-time sliding mode guidance law is designed to accomplish accurate interception. The stability of the closed-loop guidance system is proven by the Lyapunov method. Simulation results of different scenarios are executed to validate the effectiveness and superiority of the proposed guidance law.

Research of Traffic Flow Guidance System Coordinated with Traffic Control Based on the Key Point of Network

2013 ◽  
Vol 361-363 ◽  
pp. 2185-2190
Author(s):  
Xu Hui Ma ◽  
Bao Tian Dong ◽  
Zhi Jian Wang
Keyword(s):  
Traffic Control ◽  
Urban Traffic ◽  
Guidance System ◽  
Traffic Jam ◽  
Guidance And Control ◽  
Cooperation Strategy ◽  
Traffic Control System ◽  
Traffic Guidance ◽  
Urban Traffic Control ◽  
And Control

It is necessary and essential to coordinate Urban Traffic Control System with Urban Traffic Guidance System, which can integrate traffic facilities and establish the intelligent and economical transportation system. In the paper, we aim to solve the traffic jam of the key point of network utilizing the coordination technology based on the traffic guidance and control. To proving the algorithm, we set a network to simulate the cooperation strategy based on the paper. Simulation results show that the coordination strategy and technology can efftetively release the traffic jam.

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 Nonlinear Finite-Horizon Regulation and Tracking for Systems with Incomplete State Information Using Differential State Dependent Riccati Equation

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Ahmed Khamis ◽  
D. Subbaram Naidu ◽  
Ahmed M. Kamel
Keyword(s):  
Riccati Equation ◽  
Stochastic Systems ◽  
Finite Horizon ◽  
Guidance System ◽  
State Dependent ◽  
Wide Range ◽  
Linearized System ◽  
Estimation And Control ◽  
Regulation And Tracking ◽  
And Control

This paper presents an efficient online technique used for finite-horizon, nonlinear, stochastic, regulator, and tracking problems. This can be accomplished by the integration of the differential SDRE filter algorithm and the finite-horizon state dependent Riccati equation (SDRE) technique. Unlike the previous methods which deal with the linearized system, this technique provides finite-horizon estimation and control of the nonlinear stochastic systems. Further, the proposed technique is effective for a wide range of operating points. Simulation results of a missile guidance system are presented to illustrate the effectiveness of the proposed technique.

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.

A Review of Guidance Laws Applicable to Unmanned Underwater Vehicles

2003 ◽  
Vol 56 (1) ◽  
pp. 15-29 ◽  
Author(s):  
W. Naeem ◽  
R. Sutton ◽  
S. M. Ahmad ◽  
R. S. Burns
Keyword(s):  
Autonomous Underwater Vehicles ◽  
Underwater Vehicles ◽  
Guidance System ◽  
Unmanned Underwater Vehicles ◽  
Guidance And Control ◽  
Autonomous Operation ◽  
Guidance Law ◽  
Guidance Strategies ◽  
And Control ◽  
Guidance Laws

The main problem in bringing autonomy to any vehicle lies in the design of a suitable guidance law. For truly autonomous operation, the vehicle needs to have a reliable Navigation, Guidance and Control (NGC) system of which the guidance system is the key element that generates suitable trajectories to be followed. In this review paper, various guidance laws found in the literature and their relevance to autonomous underwater vehicles (AUVs) are discussed. Since existing guidance laws for underwater vehicles have emulated from tactical airborne missile systems, a number of approaches for the missile guidance systems are considered. Finally, potential guidance strategies for AUVs are proposed.

Modeling and control of a nuclear power plant's fuel transport system

2015 ◽  
Author(s):  
Umer Hameed Shah ◽  
Mingxu Piao ◽  
Gyoung-Hahn Kim ◽  
Keum-Shik Hong ◽  
Jae Young Jeon
Keyword(s):  
Transport System ◽  
Nuclear Power ◽  
Modeling And Control ◽  
And Control
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