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Keywords: pumps
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. January 2012, 134(1): 011019.
Published Online: December 6, 2011
...Longke Wang; Wayne J. Book; James D. Huggins This paper proposes a novel hydraulic circuit for a single rod cylinder controlled by a variable displacement pump. The circuit arrangement not only gives the system high energy efficiency but also improves upon the internal instability of traditional...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. January 2012, 134(1): 014501.
Published Online: December 2, 2011
...Mohammed A. El Sayed; Saeid Habibi This article presents the development of a multiple inner-loop control strategy for improving the performance of hydrostatic actuation systems. In these actuators, the presence of nonlinearities associated with pump/motor static friction and backlash, pressure...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. November 2011, 133(6): 064505.
Published Online: November 22, 2011
...M. Z. Norhirni; M. Hamdi; S. Nurmaya Musa; L. H. Saw; N. A. Mardi; N. Hilman In an axial piston pump design, the swash plate plays an important role in controlling the displacement of the pump, especially in a closed loop system. In this paper, the axial piston pump is incorporated into the design...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. November 2011, 133(6): 061005.
Published Online: September 29, 2011
...Noah D. Manring; Viral S. Mehta The objectives of this paper are to identify the design parameters that have the greatest impact on the bandwidth frequency of a pressure controlled, axial-piston pump. This study is motivated by the fact that a physical limitation for these machines has been...
Journal Articles
Stan van der Meulen, Rokus van Iperen, Bram de Jager, Frans Veldpaus, Francis van der Sluis, Maarten Steinbuch
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. July 2011, 133(4): 041004.
Published Online: April 6, 2011
... is characterized by a relatively low complexity and a reasonably high accuracy. A modular approach is pursued with respect to the first principles models of the hydraulic components, i.e., a hydraulic pump, spool valves, proportional solenoid valves, channels, and hydraulic cylinders, which reduces complexity...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. January 2011, 133(1): 011003.
Published Online: November 23, 2010
...James D. Van de Ven; Allan Katz Hydraulic applications requiring a variation in the speed or torque of actuators have historically used throttling valve control or a variable displacement pump or motor. An alternative method is switch-mode control that uses a high-speed valve to rapidly switch...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. September 2010, 132(5): 054502.
Published Online: August 16, 2010
...Wenjun Meng; Jeffrey C. Suhling A combined controller (CT-PBC) by contact task control (CTC) with passivity based controller (PBC) is introduced to control test system of high capacity hydraulic pump (HCHP) to measure its properties. It is compared with a vector controller; a torque feedback based...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. January 2010, 132(1): 011002.
Published Online: December 1, 2009
...Zhiru Shi; Gordon Parker; Jonathan Granstrom Variable displacement, swash-plate controlled, axial-piston pumps are widely used in applications that require high pressure and variable flow rates. The pump consists of a rotating barrel assembly that houses several pistons in a circular array. A swash...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. January 2008, 130(1): 011011.
Published Online: January 8, 2008
...J. M. Bergada; J. Watton; S. Kumar This paper analyzes the pressure distribution, leakage, force, and torque between the barrel and the port plate of an axial piston pump. A detailed set of new equations is developed, which takes into account important parameters such as tilt, clearance...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. July 2007, 129(4): 456–468.
Published Online: December 11, 2006
...Alessandro Roccatello; Salvatore Mancò; Nicola Nervegna Analysis of a variable displacement axial piston pump, as in other complex fluid power and mechanical systems, requires appropriate insight into three multidisciplinary domains, i.e., hydraulics, mechanics and tribology. In recent years...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. May 2007, 129(3): 367–371.
Published Online: December 7, 2006
...Noah D. Manring; Viral S. Mehta; Frank J. Raab; Kevin J. Graf The objective of this study is to identify the best indexed position of two rotating groups within a tandem axial-piston pump for attenuating the torque ripple amplitude that is exerted on the shaft. By attenuating the torque ripple...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. July 2007, 129(4): 446–455.
Published Online: October 24, 2006
...Massimo Rundo; Nicola Nervegna The paper brings to evidence the effect that geometry of the stator ring of variable displacement radial pumps bears on performance characteristics of these units. The type of motion of the stator ring (linear or rotational), the location of the center of rotation...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. March 2004, 126(1): 65–74.
Published Online: April 12, 2004
...Noah D. Manring; Zhilin Dong In this paper, the control and containment forces acting on the swash plate of an axial-piston pump are examined. The most novel aspect of this research is that it includes the analysis of a secondary swash-plate angle that is occasionally used in aerospace pump...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. March 2004, 126(1): 75–81.
Published Online: April 12, 2004
...Timothy G. McGee, Graduate Student; Justin W. Raade, Graduate Student; H. Kazerooni, Professor The authors present a novel power supply for mobile robotic systems. A monopropellant (e.g., hydrogen peroxide) decomposes into high temperature gases, which drive a free piston hydraulic pump (FPHP...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. December 2003, 125(4): 618–629.
Published Online: January 29, 2004
... switches for more efficient power conversion and/or to incorporate a control structure. A variety of power converters including electronic converters, hydraulic pumps, and clutched transmissions/differentials employ switches. It is shown how reduced order models can be derived using bond graphs and a VSS...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. September 2003, 125(3): 396–404.
Published Online: September 18, 2003
...Noah D. Manring; Suresh B. Kasaragadda In this paper, the theoretical flow ripple of an external gear pump is studied for pumps of similar size using different numbers of teeth on the driving and driven gears. In this work, the flow ripple equation is derived based upon the flow of incompressible...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. December 2002, 124(4): 613–616.
Published Online: December 16, 2002
...X. Zhang; S. S. Nair; N. D. Manring A robust adaptive pressure control strategy is proposed for a novel indexing variable-displacement pump. In the proposed approach, parametric uncertainties and unmodeled dynamics are identified to the extent possible using a model free learning network and used...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. September 2002, 124(3): 443–451.
Published Online: July 23, 2002
...Osama Gad; M. Galal Rabie; Refaat M. El-Taher This paper deals with the static and dynamic behavior of a variable displacement bent axis axial piston pump with power control. A mathematical model is deduced to predict the performance of the pump and its controller. The pump static and dynamic...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. September 2001, 123(3): 479–487.
Published Online: January 4, 2000
...Noah D. Manring; Yihong Zhang In this research, the volumetric efficiency of the axial-piston pump is examined as it relates to the compressibility losses of the fluid. In particular, two valve-plate geometries are compared to show that alterations in the valve-plate design can cause differences...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. September 2001, 123(3): 463–470.
Published Online: November 12, 1999
...X. Zhang; J. Cho, Graduate Students; S. S. Nair, Professor; N. D. Manring, Program Manager, A new, open-loop, reduced order model is proposed for the swash plate dynamics of an axial piston pump. The difference from previous reduced order models is the modeling of a damping mechanism not reported...
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