Modeling Analysis And Control Of Hydraulic Actuator For Forging

Author : Xinjiang Lu
Publisher : Springer
ISBN 13 : 9811055831
Total Pages : 228 pages
Book Rating : 4.36/5 ( download)

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Download or read book Modeling, Analysis and Control of Hydraulic Actuator for Forging written by Xinjiang Lu and published by Springer. This book was released on 2017-12-30 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes load modeling approaches for complex work pieces and batch forgings, and demonstrates analytical modeling and data-driven modeling approaches for known and unknown complex forging processes. It overcomes the current shortcomings of modeling, analysis and control approaches, presenting contributions in three major areas: In the first, several novel modeling approaches are proposed: a process/shape-decomposition modeling method to help estimate the deformation force; an online probabilistic learning machine for the modeling of batch forging processes; and several data-driven identification and modeling approaches for unknown forging processes under different work conditions. The second area develops model-based dynamic analysis methods to derive the conditions of stability and creep. Lastly, several novel intelligent control methods are proposed for complex forging processes. One of the most serious problems in forging forming involves the inaccurate forging conditions, velocity and position offered by the hydraulic actuator due to the complexity of both the deformation process of the metal work piece and the motion process of the hydraulic actuator. The book summarizes the current weaknesses of modeling, analysis and control approaches. are summarized as follows: a) With the current modeling approaches it is difficult to model complex forging processes with unknown parameters, as they only model the dynamics in local working areas but do not effectively model unknown nonlinear systems across multiple working areas; further, they do not take the batch forging process into account, let alone its distribution modeling. b) All previous dynamic analysis studies simplify the forging system to having a single-frequency pressure fluctuation and neglect the influences of non-linear load force. Further, they fail to take the flow equation in both valves and cylinders into account. c) Conventional control approaches only consider the linear deformation force and pay no attention to sudden changes and the motion synchronization for the multi-cylinder system, making them less effective for complex, nonlinear time-varying forging processes subject to sudden changes.

Author : A. L. Helinski
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.95/5 ( download)

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Download or read book Hydraulic Control Design and Modeling Techniques written by A. L. Helinski and published by . This book was released on 1989 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report details the analysis of a hydraulic actuator system. The analysis consists of designing control compensation by means of deriving a frequency response from a non-linear mathematical model and using classical control theory. This hydraulic actuator system will be used on the Turret Motion Base Simulator (TMBS) which is a unique six degree of freedom simulator being developed. A considerable effort is being made to develop analytical models of laboratory simulators so that a complete assessment can be made before testing is conducted. Analytical studies may point to various problems with the system and control design considerations may be made early in the development stage. The results of selected command signals representing terrain profiles can be simulated with the analytical model before being applied to the actual system. As the level of complexity in laboratory testing is increased the more important becomes analytical studies. (JES).

Author : Basil Jacob Joseph
Publisher :
ISBN 13 :
Total Pages : 380 pages
Book Rating : 4.60/5 ( download)

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Download or read book Modeling and Performance of a Hydraulic Actuator System written by Basil Jacob Joseph and published by . This book was released on 1995 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Yan Dong Wang
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038260932
Total Pages : 1078 pages
Book Rating : 4.36/5 ( download)

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Download or read book Mechanical Science and Engineering III written by Yan Dong Wang and published by Trans Tech Publications Ltd. This book was released on 2013-06-27 with total page 1078 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collection of 189 peer reviewed paper communicates the latest progress and research results, including new theory, technology, methods and equipment in mechanical science and engineering. The major topics covered include: Mechanism Theory & Application, Mechanical Dynamics, Manufacturing System and Automation, Micro and Nano Manufacturing, and others related areas in mechanical science and engineering.

Author : Noah D. Manring
Publisher : John Wiley & Sons
ISBN 13 : 1119416477
Total Pages : 416 pages
Book Rating : 4.70/5 ( download)

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Download or read book Hydraulic Control Systems written by Noah D. Manring and published by John Wiley & Sons. This book was released on 2019-09-24 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides key updates to a must-have text on hydraulic control systems This fully updated, second edition offers students and professionals a reliable and comprehensive guide to the 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. The book also offers all new information on: advanced control topics; auxiliary components (reservoirs, accumulators, coolers, filters); hybrid transmissions; multi-circuit systems; and digital hydraulics. Chapters in Hydraulic Control Systems, 2nd Edition cover; fluid properties; fluid mechanics; dynamic systems and control; hydraulic valves, pumps, and actuators; auxiliary components; and both valve and pump controlled hydraulic systems. The book presents illustrative case studies throughout that highlight important topics and demonstrate how equations can be implemented and used in the real world. It also features end-of-chapter exercises to help facilitate learning. It is a powerful tool for developing a solid understanding of hydraulic control systems that will serve all practicing engineers in the field. Provides a useful review of fluid mechanics and system dynamics Offers thorough analysis of transient fluid flow forces within valves Adds all new information on: advanced control topics; auxiliary components; hybrid transmissions; multi-circuit systems; and digital hydraulics Discusses flow ripple for both gear pumps and axial piston pumps Presents updated analysis of the pump control problems associated with swash plate type machines Showcases a successful methodology for hydraulic system design Features reduced-order models and PID controllers showing control objectives of position, velocity, and effort Hydraulic Control Systems, 2nd Edition is an important book for undergraduate and first-year graduate students taking courses in fluid power. It is also an excellent resource for practicing engineers in the field of fluid power.

Author :
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.38/5 ( download)

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Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Peter Dransfield
Publisher : Springer
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.08/5 ( download)

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Download or read book Hydraulic Control Systems--design and Analysis of Their Dynamics written by Peter Dransfield and published by Springer. This book was released on 1981 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces, explains, demonstrates, & utilizes the use of power bond graphs for hydraulic control systems as an approach to the development of dynamic models.

Author : Vladimir Pastrakuljic
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.72/5 ( download)

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Download or read book Design and Modeling of a New Electro Hydraulic Actuator written by Vladimir Pastrakuljic and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the issues of design and mathematical model identification of an advanced hydraulic system referred to as Electro Hydraulic Actuator (EHA). In the design part, insights into system design methodology are presented and used for the EHA prototype manufacturing. To get better knowledge of the system behavior, extensive open loop tests were performed. Test results are presented in the time and frequency domain, and it was concluded that system behavior is nonlinear. In the modeling part, a nonlinear mathematical model of the EHA is derived. Some of the unknown model parameters had to be identified experimentally by optimization. The last step in the system mathematical modeling was open and closed loop model validation using the experimental data. Proposed nonlinear mathematical model gives good correspondence with experimental data and can be used for system studying or controller design. Performed test show that the EHA system has high positioning accuracy (0.01mm), fairly high bandwidth (23 Hz with 20kg inertial load) and is easy to control. It shows significant benefits when compared to conventional hydraulic systems in the areas of control, efficiency and physical dimensions.

Author : Gregory Alan Bass
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.41/5 ( download)

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Download or read book Modeling and Control of a Hydro-pneumatic Actuator written by Gregory Alan Bass and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Brian E. Suisse
Publisher :
ISBN 13 : 9780542227219
Total Pages : pages
Book Rating : 4.15/5 ( download)

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Download or read book Research for Dynamic Seal Friction Modeling in Linear Motion Hydraulic Piston Applications written by Brian E. Suisse and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a unique physics-based analytic model for dynamic seal friction in hydraulic actuators as a function of cylinder pressure, seal material, piston rod dimensions, piston rod seal gland dimensions, and other influencing factors. Results from a series of friction tests are presented. Finite element analysis of an installed seal is used to predict contact stress between the seal and the gland, providing a normal force against the sealing surface. This information is used to determine coefficients of friction within the test specimen. From the analysis, a pressure-sensitive model is generated. The friction model is overlaid on the test data and proves to be suitable for use in a hydraulic actuator simulation. Results from a simple closed-loop servo actuator model are then presented with friction effects included. Recommendations are proposed for further study and development to provide better versatility in dynamic seal friction modeling.