Modelling Of An Electro Hydraulic Servo System
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Modelling Of An Electro Hydraulic Servo System
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Author : Keith Caney
language : en
Publisher:
Release Date : 1977
Modelling Of An Electro Hydraulic Servo System written by Keith Caney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Hydraulic servomechanisms categories.
Computer Aided Design And Simulation Procedures Of Electro Hydraulic Servo Mechanisms
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Author : Qunhua Zhu
language : en
Publisher:
Release Date : 1988
Computer Aided Design And Simulation Procedures Of Electro Hydraulic Servo Mechanisms written by Qunhua Zhu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Hydraulic servo mechanisms combine hydraulic power and feedback techniques to achieve rapid, accurate regulation. In recent years with the development of electronic technology, electro-hydraulic servo control systems have found more usage in industry and military systems of all types. This thesis deals with the mathematical modelling and computer simulation of an electro-hydraulic servovalve controlled motor for both speed and position schemes. As a preliminary investigation, these systems are simplified to achieve insight into the physical problem. In the speed control scheme, linear equations are employed to describe the system. However in the position control scheme, the equations describing the system are nonlinear. Control theory is used to analyse the system and thereafter simulation programs for both speed control and position control are designed to investigate dynamic behaviour and simulated results of each system are shown graphically. Some improved control concepsions are also given in this thesis. In speed control scheme, a slope command signal is utilised instead of a sudden change of command signal, and this improvement achieves the reduction of the system overshoot and oscillation. In position control, which is a variable torque system, so called 'equigain' and 'varigain' control schemes are established to improve the accuracy of trajectory control. Finally recommendations for further work are presented with references for initiating these enquires.
Modelling And Controller Design Of An Industrial Electro Hydraulic Actuator System Using Servo Valve
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Author : Jason Micheal
language : en
Publisher:
Release Date : 2012
Modelling And Controller Design Of An Industrial Electro Hydraulic Actuator System Using Servo Valve written by Jason Micheal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
The Model Based Condition Monitoring Of Electro Hydraulic Servo Systems
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Author : Ali Hassan El-Shanti
language : en
Publisher:
Release Date : 2002
The Model Based Condition Monitoring Of Electro Hydraulic Servo Systems written by Ali Hassan El-Shanti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Hydraulic Servo Systems
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Author : Mohieddine Jelali
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Hydraulic Servo Systems written by Mohieddine Jelali and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This up-to-date book details the basic concepts of many recent developments of nonlinear identification and nonlinear control, and their application to hydraulic servo-systems. It is very application-oriented and provides the reader with detailed working procedures and hints for implementation routines and software tools.
Numerical Simulations
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Author : Lutz Angermann
language : en
Publisher: IntechOpen
Release Date : 2011-01-30
Numerical Simulations written by Lutz Angermann and has been published by IntechOpen this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-30 with Computers categories.
This book will interest researchers, scientists, engineers and graduate students in many disciplines, who make use of mathematical modeling and computer simulation. Although it represents only a small sample of the research activity on numerical simulations, the book will certainly serve as a valuable tool for researchers interested in getting involved in this multidisciplinary field. It will be useful to encourage further experimental and theoretical researches in the above mentioned areas of numerical simulation.
Electro Hydraulic Actuation Systems
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Author : J. Jaidev Vyas
language : en
Publisher: Springer
Release Date : 2018-09-01
Electro Hydraulic Actuation Systems written by J. Jaidev Vyas and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-01 with Technology & Engineering categories.
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.
Research And Demonstration Of A Digital Flight Control System Electro Hydraulic Servo Control Valve Actuator Experimental Model
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Author : D. S. Seidel
language : en
Publisher:
Release Date : 1964
Research And Demonstration Of A Digital Flight Control System Electro Hydraulic Servo Control Valve Actuator Experimental Model written by D. S. Seidel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
This report discusses the applicability of various electrohydraulic servo valve (and servo actuator) configurations for use in digital flight control systems. The research and de velopmental effort was conducted in five phases: Initial research and analysis, interface study, choice of experimental model configuration, experimental model design analysis, and experimental model physical design and evaluation. During the initial research and analysis phase, three servo actuator configurations capable of response to serial digital information and one servo actuator configuration capable of response to parallel digital information were investigated. The configurations responsive to serial digital information were termed incremental servo actuators and operated essentially in a bangbang mode during each actuation cycle. The configurations responsive to parallel digital information were termed parallel binary servo actuators (PBSA). The PBSA configuration discussed in this report is an analog servo actuator configuration utilizing a multicoil torque motor for binary weighting and summation operations. (Author).
Simulation Of Fluid Power Systems With Simcenter Amesim
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Author : Nicolae Vasiliu
language : en
Publisher: CRC Press
Release Date : 2018-04-09
Simulation Of Fluid Power Systems With Simcenter Amesim written by Nicolae Vasiliu and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-09 with Science categories.
This book illustrates numerical simulation of fluid power systems by LMS Amesim Platform covering hydrostatic transmissions, electro hydraulic servo valves, hydraulic servomechanisms for aerospace engineering, speed governors for power machines, fuel injection systems, and automotive servo systems It includes hydrostatic transmissions, automotive fuel injection, hydropower speed units governor, aerospace servo systems along with case studies of specified companies Aids in predicting and optimizing the static and dynamic performances related to the systems under study
The Dynamic Characteristics Of An Electro Hydraulic Servo Valve
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Author :
language : en
Publisher:
Release Date : 1974
The Dynamic Characteristics Of An Electro Hydraulic Servo Valve written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
In the design of hydraulic systems which include servo-valves it is usual to describe the valve characteristics using steady-state considerations. Demands of increased precision and speed of response placed on these systems in recent times have necessitated further investigation into the dynamic response of electro-hydraulic servo-valves.A survey of research carried out on servo-valve characteristics and the transducers available for measuring pulsating flow is presented in Chapter A new, indirect method for measuring the oscillating flow-rate froma servo-valve is described in Chapter 2. The theory of the technique and the assumptions used are discussed.Verification of the usefulness of the technique was obtained with an analogue model. Accurate prediction of the flow-rate from a valve model with both steady-state and frequency dependent characteristics was obtained as detailed in Chapters 3 and 4«An experimental apparatus is described in Chapter 5 for implementing the indirect method. Measurement of the component characteristics and parameters and the calibration and measurement of the dynamic responses of the transducers are described.Three models for a servo-valve are discussed in Chapter 6 and used in simulations of the experimental system. One model uses the measured steady-state valve characteristic whilst the other models are based upon the analyses of other researchers which are extended for application to the experimental system.In Chapter 7 the responses of the models and the experimental system are compared. It is found that the three models agree closely. Frequency responses of the experimental system and the steady-state model arepresented and a possible explanation for their difference is described. Frequency compensation is shown to greatly extend the useful bandwidth of the steady-state model for system design and stability considerations.