Download or read book Investigation of Hydraulic Poppet Valve Stability written by Donald Edwin Wandling and published by . This book was released on 1967 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics and Stability Issues of Poppet Type Pressure Relief Valves written by Ferris M. Pfeiffer and published by . This book was released on 2004 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the dynamics of a poppet-type relief valve are studied for the purposes of generating an accurate linear model and stability criterion that may be used in design and simulation of hydraulic systems. This study begins by developing a flow rate model for the fluid flow through the valve. Next, a nonlinear model of the valve system, including the steady and transient flow forces that act on the poppet, is developed. From here, a linearized third order model is produced from which a stability criterion for the system is deduced using the Routh-Hurwitz method. The nonlinear and linearized models are compared using simulation studies. The simulation studies show the accuracy of the linear model. Design sensitivity analysis is performed, and recommendations are made that lead to improved stability characteristics of future valve designs. The linear model is shown to be valid for sufficiently stable systems. The stability criterion is shown to be valid for the system under consideration.
Download or read book Dynamic Stability of Hydraulic Poppet Valves written by Jens-Erik Jørgensen and published by . This book was released on 1963 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of the Stability of Hydraulic Pressure Relief Valves written by Pandompatom Radhakrishnan and published by . This book was released on 1960 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Stability of Hydraulic Poppet Valves written by and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: By Jens E. Jörgensen.
Download or read book Hydraulic Poppet Valve Stability written by D. E. Wandling and published by . This book was released on 1972 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of the Flow Forces in the Hydraulic Poppet Valve written by Yermek Tyurebekov and published by . This book was released on 2010 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Theoretical and Experimental Study of Hydraulic Pressure Regulating Valve Dynamics and Stability written by Muhammed Athar Masood and published by . This book was released on 1987 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iowa State Engineering Research written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Phase Relationship Between Pressure Fluctuation and Valve Displacement in a Hydraulic Conduit poppet Valve System written by Robert Lawrence Turano and published by . This book was released on 1957 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Digital Program to Determine the Operational Characteristics of a Pilot actuated Water relief Valve written by D. D. Schultz and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Hydraulic Laboratory Research in the United States written by and published by . This book was released on 1962 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
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 Nonlinear Control and Active Damping of a Forced feedback Metering Poppet Valve written by Curtis Harvey Omari Cline and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For a metering poppet valve which was developed at the University of Missouri (MU valve), the valve can be configured for performance at the cost of stability. It is desirable to achieve both performance and stability using electronic control. Presently, in the MU valve, the pilot poppet motion is damped by the flow of hydraulic fluid through a channel or orifice running through the poppet. In this research, it is proposed that the solenoid be used to provide damping (active damping) to the pilot poppet. The damping input signal to the solenoid is determined as a function of the pilot poppet velocity. In practice, the velocity is difficult to measure due to the MU valve's configuration and it is estimated according to the self-sensing actuator concept. Theoretical results demonstrated that a valve actuator could be designed with an emphasis on high speed performance while an electronic control system is used to damp unwanted oscillations. For flow control, several researchers have used feedback linearization to cancel part of a hydraulic system's nonlinearities in spool valves. In the case of the metering poppet valve, feedback linearization is an attractive approach since experimental studies have shown that poppet instabilities are caused by nonlinear mechanisms like flow forces. In this work, nonlinearities are cancelled in the input-output relationship of the metering poppet valve. The controller was shown to achieve robust tracking of a reference trajectory.
Download or read book Hydraulic Control Systems written by Noah D. Manring and published by John Wiley & Sons. This book was released on 2019-09-04 with total page 509 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.
Download or read book Hydraulic Research in the United States written by and published by . This book was released on 1960 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
