Mechatronic Modeling of Real Time Wheel Rail Contact

Author: Nicola Bosso
Publisher: Springer Science & Business Media
ISBN: 364236246X
Format: PDF
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Real-time simulations of the behaviour of a rail vehicle require realistic solutions of the wheel-rail contact problem which can work in a real-time mode. Examples of such solutions for the online mode have been well known and are implemented within standard and commercial tools for the simulation codes for rail vehicle dynamics. This book is the result of the research activities carried out by the Railway Technology Lab of the Department of Mechanical and Aerospace Engineering at Politecnico di Torino. This book presents work on the project for the development of a real-time wheel-rail contact model and provides the simulation results obtained with dSpace real-time hardware. Besides this, the implementation of the contact model for the development of a real-time model for the complex mechatronic system of a scaled test rig is presented in this book and may be useful for the further validation of the real-time contact model with experiments on a full scale test rig.

Design and Simulation of Rail Vehicles

Author: Maksym Spiryagin
Publisher: CRC Press
ISBN: 1466575662
Format: PDF, ePub
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Keep Up with Advancements in the Field of Rail Vehicle Design A thorough understanding of the issues that affect dynamic performance, as well as more inventive methods for controlling rail vehicle dynamics, is needed to meet the demands for safer rail vehicles with higher speed and loads. Design and Simulation of Rail Vehicles examines the field of rail vehicle design, maintenance, and modification, as well as performance issues related to these types of vehicles. This text analyzes rail vehicle design issues and dynamic responses, describes the design and features of rail vehicles, and introduces methods that address the operational conditions of this complex system. Progresses from Basic Concepts and Terminology to Detailed Explanations and Techniques Focused on both non-powered and powered rail vehicles—freight and passenger rolling stock, locomotives, and self-powered vehicles used for public transport—this book introduces the problems involved in designing and modeling all types of rail vehicles. It explores the applications of vehicle dynamics, train operations, and track infrastructure maintenance. It introduces the fundamentals of locomotive design, multibody dynamics, and longitudinal train dynamics, and discusses co-simulation techniques. It also highlights recent advances in rail vehicle design, and contains applicable standards and acceptance tests from around the world. • Includes multidisciplinary simulation approaches • Contains an understanding of rail vehicle design and simulation techniques • Establishes the connection between theory and many simulation examples • Presents simple to advanced rail vehicle design and simulation methodologies Design and Simulation of Rail Vehicles serves as an introductory text for graduate or senior undergraduate students, and as a reference for practicing engineers and researchers investigating performance issues related to these types of vehicles.

New Trends in Mechanism and Machine Science

Author: Paulo Flores
Publisher: Springer
ISBN: 3319094114
Format: PDF, ePub, Mobi
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This work presents the most recent research in the mechanism and machine science field and its applications. The topics covered include: theoretical kinematics, computational kinematics, mechanism design, experimental mechanics, mechanics of robots, dynamics of machinery, dynamics of multi-body systems, control issues of mechanical systems, mechanisms for biomechanics, novel designs, mechanical transmissions, linkages and manipulators, micro-mechanisms, teaching methods, history of mechanism science and industrial and non-industrial applications. This volume consists of the Proceedings of the 5th European Conference on Mechanisms Science (EUCOMES) that was held in Guimarães, Portugal, from September 16 – 20, 2014. The EUCOMES is the main forum for the European community working in Mechanisms and Machine Science.

Dynamics of Vehicles on Roads and Tracks Volume 2

Author: Maksym Spiryagin
Publisher: CRC Press
ISBN: 1351057162
Format: PDF, Mobi
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The International Symposium on Dynamics of Vehicles on Roads and Tracks is the leading international gathering of scientists and engineers from academia and industry in the field of ground vehicle dynamics to present and exchange their latest ideas and breakthroughs. The International Association of Vehicle System Dynamics (IAVSD) was established in Vienna in 1977 and has since held its biennial symposia throughout Europe and in the USA, Canada, Japan, South Africa and China. The IAVSD, while celebrating its first 40 years, held the 25th Symposium at Rockhampton, Queensland, Australia in August 2017. The symposium was hosted by the Centre for Railway Engineering at Central Queensland University. The papers presented at the symposium are now published in these Proceedings to provide a comprehensive review of the latest innovative developments and practical applications in road and rail vehicle dynamics. The papers will contribute greatly to a better understanding of related problems and serve as a reference for researchers and engineers active in this specialised field. IAVSD2017 focused on the following topics related to road and rail vehicles and trains: dynamics and stability vibration and comfort suspension steering traction and braking active safety systems advanced driver assistance systems autonomous road and rail vehicles adhesion and friction wheel-rail contact tyre-road interaction aerodynamics and crosswind pantograph-catenary dynamics modelling and simulation driver-vehicle interaction field and laboratory testing vehicle control and mechatronics performance and optimisation instrumentation and condition monitoring environmental considerations

Common Rail System for GDI Engines

Author: Giovanni Fiengo
Publisher: Springer Science & Business Media
ISBN: 1447144686
Format: PDF, ePub
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Progressive reductions in vehicle emission requirements have forced the automotive industry to invest in research and development of alternative control strategies. Continual control action exerted by a dedicated electronic control unit ensures that best performance in terms of pollutant emissions and power density is married with driveability and diagnostics. Gasoline direct injection (GDI) engine technology is a way to attain these goals. This brief describes the functioning of a GDI engine equipped with a common rail (CR) system, and the devices necessary to run test-bench experiments in detail. The text should prove instructive to researchers in engine control and students are recommended to this brief as their first approach to this technology. Later chapters of the brief relate an innovative strategy designed to assist with the engine management system; injection pressure regulation for fuel pressure stabilization in the CR fuel line is proposed and validated by experiment. The resulting control scheme is composed of a feedback integral action and a static model-based feed-forward action, the gains of which are scheduled as a function of fundamental plant parameters. The tuning of closed-loop performance is supported by an analysis of the phase-margin and the sensitivity function. Experimental results confirm the effectiveness of the control algorithm in regulating the mean-value rail pressure independently from engine working conditions (engine speed and time of injection) with limited design effort.

System identification SYSID 94

Author: M. Blanke
Publisher: Pergamon Pr
ISBN: 9780080422251
Format: PDF, Docs
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The everyday use of system identification is now widespread, with new and challenging problem areas continually being discovered due, mainly, to new applicaton requirements. Leading researchers and industrial practitioners were able to discuss and evaluate current developments and future reseach directions at the IFAC Symposium on System Identification, SYSID '94. This is one of the most prestigious conferences which has been held every three years since 1967. This publication focuses on new subject areas together with new results from more established areas covered at the symposium. Detailed assessment of important, active subject areas include: Wavelets, Model Quality, Robust Identification and Neural Nets in System Identification, Laguerre and Kautz Models, Bounded Noise, Industrial Use, Subspace Methods, Closed Loop Issues and the interplay between Identification and Signal Processing.

Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems

Author: Yihui Wang
Publisher: Springer
ISBN: 3319308890
Format: PDF, Kindle
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This book contributes to making urban rail transport fast, punctual and energy-efficient –significant factors in the importance of public transportation systems to economic, environmental and social requirements at both municipal and national levels. It proposes new methods for shortening passenger travel times and for reducing energy consumption, addressing two major topics: (1) train trajectory planning: the authors derive a nonlinear model for the operation of trains and present several approaches for calculating optimal and energy-efficient trajectories within a given schedule; and (2) train scheduling: the authors develop a train scheduling model for urban rail systems and optimization approaches with which to balance total passenger travel time with energy efficiency and other costs to the operator. Mixed-integer linear programming and pseudospectral methods are among the new methods proposed for single- and multi-train systems for the solution of the nonlinear trajectory planning problem which involves constraints such as varying speed restrictions and maximum traction/braking force. Signaling systems and their effects are also accounted for in the trajectory planning model. Origin–destination passenger demand is included in the model formulation for train scheduling. Iterative convex programming and efficient bi-level approaches are utilized in the solution of the train-scheduling problem. In addition, the splitting rates and route choices of passengers are also optimized from the system point of view. The problems and solutions described in Optimal Trajectory Planning and Train Scheduling for Urban Rail Transit Systems will interest researchers studying public transport systems and logistics whether from an academic or practitioner background as well as providing a real application for anybody studying optimization theory and predictive control.

Applied Dynamics

Author: Werner Schiehlen
Publisher: Springer
ISBN: 3319073354
Format: PDF
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Applied Dynamics is an important branch of engineering mechanics widely applied to mechanical and automotive engineering, aerospace and biomechanics as well as control engineering and mechatronics. The computational methods presented are based on common fundamentals. For this purpose analytical mechanics turns out to be very useful where D’Alembert’s principle in the Lagrangian formulation proves to be most efficient. The method of multibody systems, finite element systems and continuous systems are treated consistently. Thus, students get a much better understanding of dynamical phenomena, and engineers in design and development departments using computer codes may check the results more easily by choosing models of different complexity for vibration and stress analysis.