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Mobile Working Hydraulic System Dynamics
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Book Synopsis Mobile Working Hydraulic System Dynamics by : Mikael Axin
Download or read book Mobile Working Hydraulic System Dynamics written by Mikael Axin and published by Linköping University Electronic Press. This book was released on 2015-09-07 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with innovative working hydraulic systems for mobile machines. Flow control systems are studied as an alternative to load sensing. The fundamental difference is that the pump is controlled based on the operator’s command signals rather than feedback signals from the loads. This control approach enables higher energy efficiency and there is no load pressure feedback causing stability issues. Experimental results show a reduced pump pressure margin and energy saving potential for a wheel loader application. The damping contribution from the inlet and outlet orifice in directional valves is studied. Design rules are developed and verified by experiments. A novel system architecture is proposed where flow control, load sensing and open-centre are merged into a generalized system description. The proposed system is configurable and the operator can realize the characteristics of any of the standard systems without compromising energy efficiency. This can be done non-discretely on-the-fly. Experiments show that it is possible to avoid unnecessary energy losses while improving system response and increasing stability margins compared to load sensing. Static and dynamic differences between different control modes are also demonstrated experimentally.
Book Synopsis Mobile Working Machines by : Marcus Geimer
Download or read book Mobile Working Machines written by Marcus Geimer and published by SAE International. This book was released on 2020-12-31 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile Working Machines are defined by three characteristics. These machines have a cer-tain task of doing a working process, they are mobile, and they have a signifi cant energy share in their working functions. The machines should be as productive, efficient and of high quality as possible. All these machines in the fi eld of agriculture, forestry, construction, logistics, municipal sector, and in other special applications work in different applications. But, many technologies placed in the machines are the same, similar or comparable; therefore, different branches can learn from each other. Mobile Working Machines provides a wide and deep view into the technologies used in these machines. Appropriate for new engineers as well as those who wish to increase their knowledge in this field, this book brings together all the latest research and development into one place.
Book Synopsis INDEPENDENT METERING SYSTEM WITH ELECTRO-HYDRAULIC CONTROL by : Min Cheng
Download or read book INDEPENDENT METERING SYSTEM WITH ELECTRO-HYDRAULIC CONTROL written by Min Cheng and published by Springer Nature. This book was released on 2024 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows an independent metering electro-hydraulic control system involving its flexible hardware layouts, complex software control, representative products and applications. The book includes one chapter introducing the background and motivation of the independent metering electro-hydraulic control system. It also includes one chapter to summarize various hardware layouts involving the utilized hydraulic components and circuits, as well as analyze their advantages and disadvantages. It emphatically consists of four chapters demonstrating the detailed multivariable control strategies from three levels: load, valve and pump, together with fault-tolerant control under the fault condition. It includes a last chapter, in which products of independent metering control valve and their applications in some typical heavy-duty mobile machinery are collective works of reviews illustrative of recent advances. This book is interesting and useful to a wide readership in the various fields of fluid power transmission and control.
Book Synopsis Fluid Power Pumps and the Electrification by : Samuel Kärnell
Download or read book Fluid Power Pumps and the Electrification written by Samuel Kärnell and published by Linköping University Electronic Press. This book was released on 2020-05-25 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: More and more vehicles are being electrified. Mobile working machines and heavy trucks are not excluded, and these machines are often hydraulically intense. Electrification entails new requirements for the hydraulic system and its components, and these requirements must be taken into consideration. Hydraulic systems have looked similar for a long time, but now there is an opportunity to advance. Many things change when a diesel engine is replaced with an electric motor. For example, variable-speed control becomes more relevant, electric regeneration becomes possible, and the use of multiple prime movers becomes an attractive alternative. The noise from the hydraulic system will also be more noticeable when the diesel engine is gone. Furthermore, the introduction of batteries to the system makes the energy more valuable, since batteries are heavy and costly compared to a diesel tank. Therefore, it is commercially viable to invest in the hydraulic system. This thesis revolves around the heart of the hydraulic system, that also is the root of all evil. That is the pump. Traditionally, a pump has had either a fixed displacement or a continuously variable displacement. Here, the focus is on something in between, namely a pump with discrete displacement. The idea of discrete displacement is far from unique, but has not been investigated in detail in combination with variable speed before. In this thesis, a novel design for a quiet pump with discrete displacement is presented and analysed. The results show that discrete displacement is relevant from an energy perspective for machines working extensively at high pressure levels and with low flow rates, and that a few discrete values are enough to make a significant difference. However, for other cycles, the possible energy gains are very limited, but the discrete displacement can be a valuable feature if downsizing the electric machine is of interest.
Book Synopsis Hydraulic Control Systems by : Noah Manring
Download or read book Hydraulic Control Systems written by Noah Manring and published by John Wiley & Sons. This book was released on 2005-04-15 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique resource that demystifies the physical basics of hydraulic systems Hydraulic Control Systems offers students and professionals a reliable, complete volume of the most up-to-date hows and whys of today's hydraulic control system fundamentals. Complete with insightful industry examples, it features the latest coverage of modeling and control systems with a widely accepted approach to systems design. Hydraulic Control Systems is a powerful tool for developing a solid understanding of hydraulic control systems that will serve the practicing engineer in the field. Throughout the book, illustrative case studies highlight important topics and demonstrate how equations can be implemented and used in the real world. Featuring exercise problems at the end of every chapter, Hydraulic Control Systems presents: A useful review of fluid mechanics and system dynamics Thorough analysis of transient fluid flow forces within valves Discussions of flow ripple for both gear pumps and axial piston pumps Updated analysis of the pump control problems associated with swash plate type machines A successful methodology for hydraulic system design—starting from the load point of the system and working backward to the ultimate power source Reduced-order models and PID controllers showing control objectives of position, velocity, and effort
Download or read book System Dynamics written by Karl A. Seeler and published by Springer. This book was released on 2014-08-26 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique textbook takes the student from the initial steps in modeling a dynamic system through development of the mathematical models needed for feedback control. The generously-illustrated, student-friendly text focuses on fundamental theoretical development rather than the application of commercial software. Practical details of machine design are included to motivate the non-mathematically inclined student.
Book Synopsis Hydraulic Systems for Mobile Equipment by : TIMOTHY W. DELL
Download or read book Hydraulic Systems for Mobile Equipment written by TIMOTHY W. DELL and published by . This book was released on 2021-12-06 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic Systems for Mobile Equipment is the gold standard for hydraulics instruction, offering a comprehensive, single-source resource for introductory and advanced content. It provides very detailed, high-level instruction for students studying to become professional mobile hydraulics service technicians. With a primary emphasis on agricultural and construction machinery, it can also empower students working in any related field of hydraulics. The textbook is correlated to the competencies of the AED Hydraulics/Hydrostatics and Administrative/Safety Standards and the ASE Education Foundation Heavy Trucks Task List.
Book Synopsis Hydraulic Power System Analysis by : Arthur Akers
Download or read book Hydraulic Power System Analysis written by Arthur Akers and published by CRC Press. This book was released on 2006-04-17 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: The excitement and the glitz of mechatronics has shifted the engineering community's attention away from fluid power systems in recent years. However, fluid power still remains advantageous in many applications compared to electrical or mechanical power transmission methods. Designers are left with few practical resources to help in the design and
Book Synopsis Hydraulic Systems Volume 7 by : Medhat Khalil
Download or read book Hydraulic Systems Volume 7 written by Medhat Khalil and published by Compudraulic LLC. This book was released on 2020-06 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book adopted lumped modeling technique, using Matlab-Simulink, to model discrete hydraulic components that can be re-characterized and used repeatedly in system models.
Book Synopsis Active Tip-Over Prevention for Mobile Excavators by : Mehmet Nureddin Bennett
Download or read book Active Tip-Over Prevention for Mobile Excavators written by Mehmet Nureddin Bennett and published by Apprimus Wissenschaftsverlag. This book was released on 2020-01-21 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic Excavators are subjected to tip-over situations with potential hazardous outcome. The given work analyses the state of the art of tip-over protection methods, including the current mandatory overload protection system. Using methods derived from the area of robotics, an algorithm for use as an assistance system was developed to predict and actively prevent dangerous tip-over situations. The developed method was evaluated in multi-body simulation models and in physical field tests.
Book Synopsis Mechatronic Systems 1 by : Waldemar Wójcik
Download or read book Mechatronic Systems 1 written by Waldemar Wójcik and published by Routledge. This book was released on 2021-12-29 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of the first volume is the issues related to the components and systems of transport machines. Motor vehicle systems tests are described: suspension dampers, steering, brakes and differentials. Design issues of machine elements operating in extreme conditions are also addressed. The possibility of increasing wear resistance in high-speed and ethanol-powered engines is analyzed. An extensive part covers the dynamics of hydraulic, electro-hydraulic and mechanical-hydraulic systems and the issues of diagnostics and automatic control in such systems. Aspects of the regional system of motor transport, public transport and transport and logistics of agricultural machinery are also addressed. The volume also examines selected technical and economic issues of gas transport. Topics on modelling of production processes with the transport of products are a complement.
Book Synopsis Hydraulic Control Systems: Theory And Practice by : Shizurou Konami
Download or read book Hydraulic Control Systems: Theory And Practice written by Shizurou Konami and published by World Scientific Publishing Company. This book was released on 2016-08-19 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hydraulic system controls the transmission of energy. It transforms the mechanical energy of a prime motor into fluid energy. It controls the fluid configuration and transforms the fluid energy into mechanical work at specified locations. Hydraulic systems feature high power density, sensitive response and precision of control, especially when operating under computer control. Thus, they have been widely used as the energy transmission control systems in aircraft, ships, construction machinery, machine tools and others. Therefore, it is indispensable for a mechanical engineer to become versed with hydraulic control technology. The technology is mainly associated with fluid mechanics and control theories, but it is related to the wider field of engineering as well.This book provides a comprehensive treatment of the analysis and design of hydraulic control systems which will be invaluable for practising engineers, as well as undergraduate and graduate students specializing in mechanical engineering. Firstly, the fundamental concepts of hydraulic control systems are addressed, and illustrated by reference to applications in the field of aviation engineering. Secondly, the fluid mechanics necessary for the comprehension of hydraulic elements are provided. The technology of the hydraulic components composing hydraulic control systems is addressed, the key focus being on how to apply theoretical concepts into the design and analysis of hydraulic components and systems. Finally, there is a discussion on fundamental control technology and its application to hydraulic servo systems. This includes the formation of hydraulic servo systems, basic control theorems, methods identifying the dynamic characteristics of hydraulic actuator systems, and a design method for hydraulic control systems. Numerical exercises are provided at the end of each chapter.
Book Synopsis Dynamics of Machines and Hydraulic Systems by : Michał Stosiak
Download or read book Dynamics of Machines and Hydraulic Systems written by Michał Stosiak and published by Springer Nature. This book was released on with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical System Dynamics by : Friedrich Pfeiffer
Download or read book Mechanical System Dynamics written by Friedrich Pfeiffer and published by Springer Science & Business Media. This book was released on 2008-09-27 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics as a fundamental science in Physics and in Engineering deals with interactions of forces resulting in motion and deformation of material bodies. Similar to other sciences Mechanics serves in the world of Physics and in that of Engineering in a di?erent way, in spite of many and increasing inter- pendencies. Machines and mechanisms are for physicists tools for cognition and research, for engineers they are the objectives of research, according to a famous statement of the Frankfurt physicist and biologist Friedrich Dessauer. Physicists apply machines to support their questions to Nature with the goal of new insights into our physical world. Engineers apply physical knowledge to support the realization process of their ideas and their intuition. Physics is an analytical Science searching for answers to questions concerning the world around us. Engineering is a synthetic Science, where the physical and ma- ematical fundamentals play the role of a kind of reinsurance with respect to a really functioning and e?ciently operating machine. Engineering is also an iterative Science resulting in typical long-time evolutions of their products, but also in terms of the relatively short-time developments of improving an existing product or in developing a new one. Every physical or mathematical Science has to face these properties by developing on their side new methods, new practice-proved algorithms up to new fundamentals adaptable to new technological developments. This is as a matter of fact also true for the ?eld of Mechanics.
Book Synopsis Multibody System Dynamics, Robotics and Control by : Hubert Gattringer
Download or read book Multibody System Dynamics, Robotics and Control written by Hubert Gattringer and published by Springer Science & Business Media. This book was released on 2013-01-06 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume contains 19 contributions by international experts in the field of multibody system dynamics, robotics and control. The book aims to bridge the gap between the modeling of mechanical systems by means of multibody dynamics formulations and robotics. In the classical approach, a multibody dynamics model contains a very high level of detail, however, the application of such models to robotics or control is usually limited. The papers aim to connect the different scientific communities in multibody dynamics, robotics and control. Main topics are flexible multibody systems, humanoid robots, elastic robots, nonlinear control, optimal path planning, and identification.
Book Synopsis Simulation of Fluid Power Systems with Simcenter Amesim by : Nicolae Vasiliu
Download or read book Simulation of Fluid Power Systems with Simcenter Amesim written by Nicolae Vasiliu and published by CRC Press. This book was released on 2018-04-09 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis System Dynamics for Engineering Students by : Nicolae Lobontiu
Download or read book System Dynamics for Engineering Students written by Nicolae Lobontiu and published by Academic Press. This book was released on 2017-08-29 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering system dynamics focuses on deriving mathematical models based on simplified physical representations of actual systems, such as mechanical, electrical, fluid, or thermal, and on solving these models for analysis or design purposes. System Dynamics for Engineering Students: Concepts and Applications features a classical approach to system dynamics and is designed to be utilized as a one-semester system dynamics text for upper-level undergraduate students with emphasis on mechanical, aerospace, or electrical engineering. It is the first system dynamics textbook to include examples from compliant (flexible) mechanisms and micro/nano electromechanical systems (MEMS/NEMS). This new second edition has been updated to provide more balance between analytical and computational approaches; introduces additional in-text coverage of Controls; and includes numerous fully solved examples and exercises. - Features a more balanced treatment of mechanical, electrical, fluid, and thermal systems than other texts - Introduces examples from compliant (flexible) mechanisms and MEMS/NEMS - Includes a chapter on coupled-field systems - Incorporates MATLAB® and Simulink® computational software tools throughout the book - Supplements the text with extensive instructor support available online: instructor's solution manual, image bank, and PowerPoint lecture slides NEW FOR THE SECOND EDITION - Provides more balance between analytical and computational approaches, including integration of Lagrangian equations as another modelling technique of dynamic systems - Includes additional in-text coverage of Controls, to meet the needs of schools that cover both controls and system dynamics in the course - Features a broader range of applications, including additional applications in pneumatic and hydraulic systems, and new applications in aerospace, automotive, and bioengineering systems, making the book even more appealing to mechanical engineers - Updates include new and revised examples and end-of-chapter exercises with a wider variety of engineering applications
