Electro-Hydraulic Components and Systems

Hydraulic Systems

Author: Medhat M K Dr Khalil

Publisher: N.A

ISBN: 9780997763423


Page: N.A

View: 655

This book is the second in its series. The book focuses on the electrohydraulic valves in building open-loop and closed-loop control systems. The book also covers the control electronics that drive the EH valves.

Electro-Hydraulic Components and Systems - Workbook

Author: Dr Medhat Khalil

Publisher: N.A

ISBN: 9780997781625


Page: N.A

View: 5723

This Workbook is a complementary part to the textbook of the same title. This book is used as a workbook for students to take notes during the course delivery. It contains colored printout of the PowerPoint slides that are designed to present the course. Each chapter is followed by a number of review questions and assignments for homework.

Hydraulic and Electro-Hydraulic Control Systems

Author: R.B. Walters

Publisher: Springer Science & Business Media

ISBN: 9401138400

Category: Technology & Engineering

Page: 268

View: 2240

Force and motion control systems of varying degrees of sophistication have shaped the lives of all individuals living in industrialized countries all over the world, and together with communication technology are largely responsible for the high standard ofliving prevalent in many communities. The brains of the vast majority of current control systems are electronic, in the shape of computers, microprocessors or programmable logic controllers (PLC), the nerves are provided by sensors, mainly electromech anical transducers, and the muscle comprises the drive system, in most cases either electric, pneumatic or hydraulic. The factors governing the choice of the most suitable drive are the nature of the application, the performance specification, size, weight, environ mental and safety constraints, with higher power levels favouring hydraulic drives. Past experience, especially in the machine tool sector, has clearly shown that, in the face of competition from electric drives, it is difficult to make a convincing case for hydraulic drives at the bottom end of the power at fractional horsepower level. A further, and frequently range, specifically overriding factor in the choice of drive is the familiarity of the system designer with a particular discipline, which can inhibit the selection of the optimum and most cost-effective solution for a given application. One of the objectives of this book is to help the electrical engineer overcome his natural reluctance to apply any other than electric drives.

Hydraulic Control Systems

Author: Herbert Merritt,Herbert E. Merritt

Publisher: John Wiley & Sons

ISBN: 9780471596172

Category: Technology & Engineering

Page: 358

View: 6936

The use of hydraulic control is rapidly growing and the objective of this book is to present a rational and well-balanced treatment of its components and systems. Coverage includes a review of applicable topics in fluid mechanisms; components encountered in hydraulic servo controlled systems; systems oriented issues and much more. Also offers practical suggestions concerning testing and limit cycle oscillation problems.

Pneumatic and Hydraulic Components and Instruments in Automatic Control

Proceedings of the IFAC Symposium, Warsaw, Poland, 20-23 May 1980

Author: H. J. Leskiewicz,M. Zaremba

Publisher: Elsevier

ISBN: 1483155315

Category: Technology & Engineering

Page: 290

View: 8625

Pneumatic and Hydraulic Components and Instruments in Automatic Control covers the proceedings of the International Federation of Automatic Control (IFAC) Symposium. The book reviews papers that tackle topics relating to the use of pneumatic and hydraulic equipment in automatic control. This text discusses topics such as dynamic behavior analysis of pneumatic components by numerical techniques and application of bond graphs to the digital simulation of a two-stage relief valve dynamic behavior. Topics including mathematical modeling of cavitation in hydraulic pumps; pro and contra electro-fluid analogies in digital simulation of fluid circuits; and improvement in accuracy of pneumatic delay are covered as well. This book will be of great use to researchers and professionals whose work involves the designing of automatic control systems.

Industrial Hydraulic Systems

Theory and Practice

Author: Joji Parambath

Publisher: Universal-Publishers

ISBN: 1627340580


Page: 592

View: 1624

Industrial Hydraulic Systems provides an in-depth coverage of conventional hydraulic systems encompassing fixed-displacement pumps, control valves, and actuators as well as the most modern hydraulic systems encompassing highly efficient variable-displacement pumps, electro-hydraulic proportional valves and/or servo valves with integrated electronics. The coverage is further supplemented by many typical hydraulic and electro-hydraulic circuits. Details of different types of auxiliary devices such as reservoirs, filters, accumulators, and piping have also been described in this book. Topics on hydrostatic transmission, cartridge valves, load sensing pump controls, fluids, filters, and seals are given in detail. Design, installation, and maintenance aspects of hydraulic systems are added to make the book more useful to actual practitioners of these systems. Understanding the fundamental laws and principles allows the reader to use basic theoretical concepts in practical applications. The unique feature of this textbook is that all quantities are given in the SI system as well as in the English system of units. This book provides an extensive coverage of fluid power to designers, engineers, technicians, and students of engineering colleges, polytechnics, and vocational training institutes. This book, prepared especially with an academic interest in mind, contains a large number of numerical examples, design problems, and sections for 'Test your Knowledge' and end of chapter questions. This book is intended to provide the most current information available on hydraulic technology.

Electro Hydraulic Control Theory and Its Applications Under Extreme Environment

Author: Yaobao Yin

Publisher: Butterworth-Heinemann

ISBN: 9780128140567


Page: 300

View: 3213

Electro hydraulic Control Theory and its Applications Under Extreme Environment not only presents an overview on the topic, but also delves into the fundamental mathematic models of electro hydraulic control and the application of key hydraulic components under extreme environments. The book contains chapters on hydraulic system design, including thermal analysis on hydraulic power systems in aircraft, power matching designs of hydraulic rudder, and flow matching control of asymmetric valves and cylinders. With additional coverage on new devices, experiments and application technologies, this book is an ideal reference on the research and development of significant equipment. Addresses valves' application in aircrafts, including servo valves, relief valves and pressure reducing valves Presents a qualitative and quantitative forecast of future electro-hydraulic servo systems, service performance, and mechanization in harsh environments Provides analysis methods, mathematical models and optimization design methods of electro-hydraulic servo valves under extreme environments

On Electrohydraulic Pressure Control for Power Steering Applications

Active Steering for Road Vehicles

Author: Alessandro Dell'Amico

Publisher: Linköping University Electronic Press

ISBN: 9176858383


Page: 187

View: 5184

This thesis deals with the Electrohydraulic Power Steering system for road vehicles, using electronic pressure control valves. With an ever increasing demand for safer vehicles and fewer traffic accidents, steering-related active safety functions are becoming more common in modern vehicles. Future road vehicles will also evolve towards autonomous vehicles, with several safety, environmental and financial benefits. A key component in realising such solutions is active steering. The power steering system was initially developed to ease the driver's workload by assisting in turning the wheels. This is traditionally done through a passive open-centre hydraulic system and heavy trucks must still rely on fluid power, due to the heavy work forces. Since the purpose of the original system is to control the assistive pressure, one way would be to use proportional pressure control valves. Since these are electronically controlled, active steering is possible and with closed-centre, energy efficiency can be significantly improved on. In this work, such a system is analysed in detail with the purpose of investigating the possible use of the system for Boost curve control and position control for autonomous driving. Commercially available valves are investigated since they provide an attractive solution. A model-based approach is adopted, where simulation of the system is an important tool. Another important tool is hardware-in-the-loop simulation. A test rig of an electrohydraulic power steering system, is developed. This work has shown how proportional pressure control valves can be used for Boost curve control and position control and what implications this has on a system level. As it turns out, the valves add a great deal of time lag and with the high gain from the Boost curve, this creates a control challenge. The problem can be handled by tuning the Boost gain, pressure response and damping and has been effectively shown through simulation and experiments. For position control, there is greater freedom to design the controller to fit the system. The pressure response can be made fast enough for this case and the time lag is much less critical.

Aircraft hydraulic systems

an introduction to the analysis of systems and components

Author: William L. Green

Publisher: John Wiley & Sons

ISBN: 9780471908487

Category: Technology & Engineering

Page: 137

View: 5463

A comprehensive introduction, suitable for both students and practicing engineers. Thoroughly explains the aircraft General Services and Flying Control Systems and their common components, covers the flying control unit, fluid compressibility, the performance of powered flying controls, stability, and methods for component selection. Worked examples, self-assessment exercises, numerical questions, and references are included.

Lab Manual-Msoe02-Ufpt

Author: Medhat Khalil

Publisher: N.A

ISBN: 9780997781687


Page: N.A

View: 2538

Universal Trainer Lab Manual associated with the text book HSV2 and course MSOE02 (Electro-Hydraulic Components and Systems). The manual contains lab numbers 9 to 29. It also contains instructions about the lab objectives, the devices used in the lab, the step-by-step procedure of the lab and the expected observations.



Publisher: PHI Learning Pvt. Ltd.

ISBN: 8120353218

Category: Science

Page: 320

View: 371

This introductory textbook designed for undergraduate courses in Hydraulics and Pneumatics/Fluid Power/Oil Hydraulics offered to Mechanical, Production, Industrial and Mechatronics students of Engineering disciplines, now in its third edition, introduces Hydraulic Proportional Valves and replaces some circuit designs with more clear drawings for better grasping. Besides focusing on the fundamentals, the book is a basic, practical guide that reflects field practices in design, operation and maintenance of fluid power systems—making it a useful reference for practising engineers specializing in the area of fluid power technology. It provides simple and logical explanation of programmable logic controllers used in hydraulic and pneumatic circuits. The accompanying CD-ROM acquaints readers with the engineering specifications of several pumps and valves being manufactured by the industry. KEY FEATURES • Gives step-by-step methods of designing hydraulic and pneumatic circuits. • Explains applications of hydraulic circuits in the machine tool industry. • Elaborates on practical problems in a chapter on troubleshooting. • Chapter-end review questions help students understand the fundamental principles and practical techniques for obtaining solutions. NEW TO THE THIRD EDITION • Provides clear drawings/circuits in the hydraulics section • Discusses ‘Cartridge Valves’ independently in Chapter 11 • Includes a new chapter on ‘Hydraulic Proportional Valves’ (Chapter 12)

Fluid Power Troubleshooting, Second Edition,

Author: Anton Hehn

Publisher: CRC Press

ISBN: 9780824792756

Category: Technology & Engineering

Page: 664

View: 5287

Presents practical methods for detecting, diagnosing and correcting fluid power problems within a system. The work details the design, maintenance, and troubleshooting of pneumatic, hydraulic and electrical systems and components. This second edition stresses: developments in understanding the complex interactions of components within a fluid power system; cartridge valve systems, proportional valve and servo-systems, and compressed air drying and filtering; noise reduction and other environmental concerns; and more.;This work should be of interest to mechanical, maintenance, manufacturing, system and machine design, hydraulic, pneumatic, industrial, chemical, electrical and electronics, lubrication, plastics processing, automotive, process control, and power system engineers; manufacturers of hydraulic and pneumatic machinery; systems maintenance personnel; and upper-level undergraduate and graduate students in these disciplines.

In-Flight Simulators and Fly-by-Wire/Light Demonstrators

A Historical Account of International Aeronautical Research

Author: Peter G. Hamel

Publisher: Springer

ISBN: 3319539973

Category: Technology & Engineering

Page: 345

View: 8292

This book offers the first complete account of more than sixty years of international research on In-Flight Simulation and related development of electronic and electro-optic flight control system technologies (“Fly-by-Wire” and “Fly-by-Light”). They have provided a versatile and experimental procedure that is of particular importance for verification, optimization, and evaluation of flying qualities and flight safety of manned or unmanned aircraft systems. Extensive coverage is given in the book to both fundamental information related to flight testing and state-of-the-art advances in the design and implementation of electronic and electro-optic flight control systems, which have made In-Flight Simulation possible. Written by experts, the respective chapters clearly show the interdependence between various aeronautical disciplines and in-flight simulation methods. Taken together, they form a truly multidisciplinary book that addresses the needs of not just flight test engineers, but also other aeronautical scientists, engineers and project managers and historians as well. Students with a general interest in aeronautics as well as researchers in countries with growing aeronautical ambitions will also find the book useful. The omission of mathematical equations and in-depth theoretical discussions in favor of fresh discussions on innovative experiments, together with the inclusion of anecdotes and fascinating photos, make this book not only an enjoyable read, but also an important incentive to future research. The book, translated from the German by Ravindra Jategaonkar, is an extended and revised English edition of the book Fliegende Simulatoren und Technologieträger , edited by Peter Hamel and published by Appelhans in 2014.

Electro-Hydraulic Actuation Systems

Design, Testing, Identification and Validation

Author: J. Jaidev Vyas,Balamurugan Gopalsamy,Harshavardhan Joshi

Publisher: Springer

ISBN: 9789811325465

Category: Technology & Engineering

Page: 63

View: 624

The book serves as a unique integrated platform, which not only describes the design methodology of electro-hydraulic actuation systems but also provides insights into the design of the servo valve, which is the most important component in the system. It presents a step-by-step design process, comparative tables, illustrative figures, and detailed explanations. The book focuses on the design and testing of electro-hydraulic actuation systems, which are increasingly being used in motion control applications, particularly in those where precision actuation at high operational rates is of prime importance. It describes in detail the design philosophy of such high-performance systems, presenting a system used as a physical test setup together with experimental results to corroborate the calculations. Of particular interest are the electro-hydraulic servo valves that form the heart of these actuations. These valves are complex and not much data is available in open literature due to OEM propriety issues. In this context, the book discusses the elaborate mathematical models that have been derived and an approach to validate the mathematical models with test results. Presenting the complex methodology in simple language, it will prove to be a valuable resource for students, researchers, and professional engineers alike.

Basics of Hydraulic Systems

Author: Qin Zhang

Publisher: CRC Press

ISBN: 1420071025

Category: Technology & Engineering

Page: 336

View: 3449

Draws the Link Between Service Knowledge and the Advanced Theory of Fluid Power Providing the fundamental knowledge on how a typical hydraulic system generates, delivers, and deploys fluid power, Basics of Hydraulic Systems highlights the key configuration features of the components that are needed to support their functionality in a system, such as operating principles, structural features, functionalities, and applications of core composing elements. It also shows how those components work together to perform the designated power transmission task. Moves from a System to Instructional ComponentsApproach By presenting the ins and outs of hydraulic systems in an easy-to-follow way, this example-filled textbook provides students, engineers, and technical managers an effective nuts-and-bolts reference for studying the fundamentals of fluid power transmission technology. Rather than bogging readers down with extensive mathematical equations, this resource uses a visual, expressive approach with many graphic illustrations. It also includes examples and problems within each chapter and a solutions manual for qualifying course adoptions. The text includes a section devoted to hydraulic energy storage and regeneration elements, since both play an important role in many hybrid power transmission systems, such as diesel-hydraulic hybrid vehicles. As a hydraulics expert and holder of seven US patents, the author’s experience gives readers a practical view of the field that they can then immediately apply.

Engineering Applications of Pneumatics and Hydraulics

Author: Ian C Turner

Publisher: Routledge

ISBN: 1317761391

Category: Technology & Engineering

Page: 167

View: 9354

Assuming only the most basic knowledge of the physics of fluids, this book aims to equip the reader with a sound understanding of fluid power systems and their uses in practical engineering. In line with the strongly practical bias of the book, maintenance and trouble-shooting are covered, with particular emphasis on safety systems and regulations.