Relevant bibliographies by topics / Radial Piston Pump

Academic literature on the topic 'Radial Piston Pump'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Radial Piston Pump"

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Jiang, Wei, X. G. Qiu, Guo Zhong Chai, and Jian Xing Zhou. "Research of the Pressure Pulsation within Piston Chamber in Radial Piston Pump." Advanced Materials Research 69-70 (May 2009): 626–30. http://dx.doi.org/10.4028/www.scientific.net/amr.69-70.626.

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Noise reduction in piston pumps has been being the focus research. Many methods have been designed to smooth it. Research shows that noise takes place at the time when pistons enter the discharge port or enter the suction port. In fact, noise is induced by imbalance pressure in piston chamber. In this paper, piston initial volume and instantaneous controlled volume are deduced. Equations describing pressure angle-rate-of-change are also deduced. Keep the pressure increment equal when the pump eccentric distance is maximum and minimum, and then find out the optimal structure parameters. The parameters makes the pressure ripple minimize and makes the lowest noise.
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Jasiński, Ryszard. "Research of Hydrotronic Variable-Displacement Radial Piston Pump with Electro-Pneumatic Control." Solid State Phenomena 164 (June 2010): 37–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.164.37.

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The paper presents the developed new electro-pneumatic control (pneumotronic) system for hydraulic fixed-displacement radial piston pump. Hydraulic fixed-displacement radial piston pump equipped with the proposed control system changes into hydrotronic variable-displacement radial piston pump. Pump flow rate control is realized by means of programmable logic controller, electro-pneumatic valves, pneumatic cylinders and a sensor.
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3

Guo, Tong, Shengdun Zhao, and Chen Liu. "Study on flow characteristics and flow ripple reduction schemes of spool valves distributed radial piston pump." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 12 (February 6, 2016): 2291–301. http://dx.doi.org/10.1177/0954406216630570.

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This paper studies the flow characteristics and flow ripple reduction techniques of a spool valves distributed radial piston pump. The mathematical models of the pump are established, and simulations based on the mathematics are performed in AMESim environment. The results indicate that the spool valves distributed radial piston pump has fewer flow fluctuations than the pump distributed by check valves, due to the rigid motion of its distribution component—the spool valves. Then, in order to reduce the flow ripple of the spool valves distributed radial piston pump, three techniques, namely, time delay, relief chamfer and transition compression filter volume, are proposed and their working principles are illustrated. Particularly, the design method of time delay is elaborated and its effectiveness is evaluated. The simulation results suggest that with the usage of the time delay method, the fluctuation range of the spool valves distributed radial piston pump is expected to be reduced by 21.7%.
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Dong, Peng, Shengdun Zhao, Shuqin Fan, Muzhi Zhu, and Peng Zhang. "Double-rotator and valve plate distribution radial piston pump." Assembly Automation 40, no. 2 (November 3, 2019): 265–71. http://dx.doi.org/10.1108/aa-12-2018-0270.

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Purpose The drive shaft and the distribution shaft of a traditional radial piston pump are in a cantilever state. To solve this problem, this paper aims to present a radial piston pump with through shaft driving and valve plate distribution. Design/methodology/approach The working principle of the pump is discussed in detail. In this radial piston pump, valve plate distribution parts are designed to distribute oil to the piston chambers, and the distribution shaft is replaced. A bearing is installed between the stator and rotator to reduce the friction. The transmission shaft is supported by two bearings to ensure smooth operation. The support force of the transmission shaft is optimized. In addition, the flow pulsation principle is presented. To accomplish the change, the displacement of the radial piston pump, the proportional control system is designed. Findings After completing the machining and assembly of the pump, an experimental study was carried out. The results show that the output flow of the pump is basically the same as the theoretical flow. Originality/value The friction between the slipping shoes and the stator is greatly reduced due to the function of rolling bearings. The higher stability of the driveshaft is obtained for the reason of double-sided support. The radial piston pump has a novel structural design in reducing the friction between the shoes and the stator and improving the stability of the transmission shaft.
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Cai, Han Ming, and Ming Jie Tian. "Design of a Shaft Assignment Radial Piston Pump." Advanced Materials Research 510 (April 2012): 9–12. http://dx.doi.org/10.4028/www.scientific.net/amr.510.9.

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This paper introduces a kind of shaft structure improvement after assignment radial piston pump, its structure and working principle to improve the axial flow past with radial piston pump shaft with flow the stress of the situation, and improve the hydraulic pump pressure of work and service life.
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Zhou, Tian Yue. "Research on Velocity Vibration Characteristics of Stator of Radial Piston Pump in Time Domain." Advanced Materials Research 681 (April 2013): 229–33. http://dx.doi.org/10.4028/www.scientific.net/amr.681.229.

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The working mode of constant-pressure radial piston pump includes the mode of constant flow and constant pressure. The dynamic model of stator vibration was established and the analysis was made on the stator vibrating velocity in time domain to the two modes. Measurement mechanism was designed to test the vibration of stator of JB32H-type radial piston pump. It is concluded from the analysis and test results that the velocity of stator vibrates periodically on the two modes. The maximum amplitude on the mode of constant pressure is smaller than the one on the mode of constant flow. The conclusions are helpful to the noise control of piston pump.
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Zhou, Tian Yue. "Analysis on Velocity Vibration Characteristics of Stator of Radial Piston Pump." Advanced Materials Research 230-232 (May 2011): 679–84. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.679.

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The working mode of constant-pressure radial piston pump includes the mode of constant flow and constant pressure. The dynamic model of stator vibration was established and the analysis was made on the stator vibrating velocity in frequency domain to the two modes. Measurement mechanism was designed to test the vibration of stator of JB32H-type radial piston pump. It is concluded from the analysis and test results that the velocity of stator vibrates periodically on the two modes. Stator velocity vibrates in the range of higher frequency on the mode of constant flow than on the mode of constant pressure. The conclusions are helpful to the noise control of piston pump.
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Shen, Hui, Zhuxin Zhou, Dong Guan, Zhongtao Liu, Li Jing, and Chun Zhang. "Dynamic Contact Analysis of the Piston and Slipper Pair in Axial Piston Pump." Coatings 10, no. 12 (December 13, 2020): 1217. http://dx.doi.org/10.3390/coatings10121217.

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The dynamic analysis model of axial piston pump was established; both the kinematics and dynamics simulation analysis were conducted by virtual prototyping approach. The displacement, velocity, acceleration and stress curves of the piston under different working conditions were investigated. In addition, a ball-in-socket contact model was established, and the effects of hydraulic pressure, piston radius and radial clearance on normal displacement, contact radius, maximum contact pressure, normal contact stiffness and tangential contact stiffness were analyzed comprehensively. The results indicate that the normal displacement, maximum contact pressure, contact radius, normal contact stiffness and tangential contact stiffness can be improved by enlarging the piston radius and decreasing the radial clearance.
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Guan, Dong, Li Jing, Harry H. Hilton, and Junjie Gong. "Dynamic lubrication analysis for a spherical pump." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 1 (February 28, 2018): 18–29. http://dx.doi.org/10.1177/1350650118762603.

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Dynamic lubrication analyses for a spherical pump, consisting of a piston and cylinder, are presented. Contact forces between piston and cylinder are modeled first using an equivalent ball-on-plane model. Both the effects of external loads and operating conditions are considered in a dynamic elastohydrodynamic lubrication model, which is derived from Reynolds equation. Two assumed time-dependent sine-wave and square-wave loads are applied to the model. Fluid film thicknesses are estimated using the model and assumed loads, effects of different structural, and operational parameters, such as piston diameter, radial clearance, applied load, piston speed, lubricant viscosity, and surface roughness, on fluid film thickness are investigated. Fluid film thickness reactions of more realistic smooth and continuous sine wave loads are compared to discontinuous ones in order to verify whether or not assumed ideal loads are acceptable and reliable. Results indicate that piston diameter, speed, lubricant viscosity have positive relations on the dynamic lubrication performance, and increasing these values can improve the dynamic lubrication regime. While the parameters such as radial clearance, applied load, and surface roughness have the verse effects. Furthermore, the impacts of all the above parameters on fluid film are different either. These obtained results can be used to effectively optimize spherical pump lubrication performance.
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MUKAI, Hiroshi. "Basic study on Variable Displacement Radial Piston Pump." Proceedings of Mechanical Engineering Congress, Japan 2016 (2016): S1120203. http://dx.doi.org/10.1299/jsmemecj.2016.s1120203.

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Dissertations / Theses on the topic "Radial Piston Pump"

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Michael, Paul W., and Shreya Mettakadapa. "Bulk Modulus and Traction Effects in an Axial Piston Pump and a Radial Piston Motor." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200173.

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This paper describes an investigation into the effects of fluid bulk modulus and traction coefficient properties on piston pump flow losses and radial pison motor torque losses through experimentation, modelling and simulation. Synthetic ester, high bulk modulus, multi-grade, and single grade mineral oils were evaluated. The high bulk modulus fluid exhibited 20% lower pump case and compensator flow losses than a conventional mineral oil of the same viscosity grade. Low traction coefficient fluids reduced the lowspeed torque losses of the radial piston motor by 50%. Physical models for pump case flow and motor torque losses were derived from the experimental data. Field data was collected from a hydraulically propelled agricultural machine. This data was used to model fluid performance in the machine. The simulation results predict that at an operating temperature of 80⁰C, optimizing the bulk modulus and traction coefficients of the fluid could reduce flow losses by 18% and torque losses by 5%. These findings demonstrate the potential of combining comprehensive fluid analysis with modeling and simulation to optimize fluids for the efficient transmission of power.
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Book chapters on the topic "Radial Piston Pump"

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Shatokhin, Vladimir, Boris Granko, Vladimir Sobol, Leonid K. Polishchuk, Olexander Manzhilevskyy, Konrad Gromaszek, Mukhtar Junisbekov, Nataliya Denissova, and Kuanysh Muslimov. "Vibration diagnostic of wear for cylinder-piston couples of pumps of a radial piston hydromachine." In Mechatronic Systems 1, 39–51. London: Routledge, 2021. http://dx.doi.org/10.1201/9781003224136-4.

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Kozyrskyi, Volodymyr, Andrii Petrenko, Mykola Trehub, and Yangibay Charyev. "The Exploitation of Wind Systems in Rural Electrical Network." In Advances in Computer and Electrical Engineering, 197–228. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-9179-5.ch009.

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The activity of farm enterprises is directly connected with the efficient use of resources such as electrical energy and water. Taking such conditions as factors of economic expediency and ecological safety into account, it is more reasonable to use wind stations in order to provide consumers with energy and water. The use of conventional wind and electrical stations is an easy and reliable solution. However, annual wind velocity on most settled territories does not exceed 6 m/s or even 4 m/s. It makes the efficient use of wind electrical stations more complicated. One of the solutions can probably be the use of wind and electrical stations on the basis of slow speed non-transmission arc-shaped-stator inductor-type generators with an integrated radial and ring-shaped rotor. Another efficient solution to provide areas with water and electrical energy is to use a combined wind station with a crank-and-rod mechanism and the rod of the driving mechanism of the back-and-forth motion of the core of a magnetic and electrical linear generator and the piston of a plunger pump.
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Conference papers on the topic "Radial Piston Pump"

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Dong, Peng, Shengdun Zhao, Yongfei Wang, Peng Zhang, Xiaolan Han, Chen Liu, Dean Meng, and Yuanzhe Dong. "Design and Experimental Study of Radial Piston Pump With Valve Plate Distribution." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11286.

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Abstract In the field of forging machinery and construction machinery, the hydraulic transmission has become the preferred transmission mode for its high efficiency. The hydraulic pump is the core component of the transmission system as the power component. It is also the main research focus in the field of hydraulic transmission in recent years. According to the axis direction of the piston and the drive shaft, the piston pump can be grouped into radial piston pump and axial piston pump. There are two shafts in the conventional radial piston pumps, which are distribution shaft and drive shaft to complete distribution the pump and transmission work, and the friction between the shoes and the stator is high for its high load and relative sliding speed. In order to reduce the impact of these drawbacks on pump performance, a valve plate is designed to distribute the oil to avoid the stress of the conventional distribution shaft in this paper. The working principle of the radial piston pump is discussed. An electro-hydraulic proportional servo control system was adopted to control the displacement of the pump. The design and manufacturing of the radial piston pump were completed. A test platform is carried out to test the performance and the variable displacement control system of the radial piston pump with a good test result. The radial piston pump has a certain novelty in structure and has practical value.
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Xu, Yang-Zeng, and Gen-Xi Li. "Producing Hydraulic Radial Piston Pump by Integrated CAD/CAM Technique." In International Off-Highway & Powerplant Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/911868.

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Nahin, Md Minal, Garrett R. Bohach, F. N. U. Nishanth, Eric L. Severson, and James D. Van de Ven. "Dynamic Modeling and Design of a Radial Hydrostatic Piston Pump for Integrated Pump-Motor." In ASME/BATH 2021 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/fpmc2021-68788.

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Abstract There is a current trend towards the electrification of high force/torque density machines that have traditionally been dominated by diesel engine driven hydraulics. Power dense electric machines tend to favor high operating speeds whereas a hydraulic pump is more efficient at low speed and high torque conditions. The power density of a pump can be increased by decreasing the displacement and increasing the operating speed to provide the flow demand. This miniaturization of the pump allows it to be directly integrated into an electric motor inside a single casing. This integrated pump-motor is free of shaft seals and eliminates a set of bearings otherwise required when coupling an electric motor and pump with a shaft. Additionally, the leakage from the hydraulic pump can be used as coolant for the electrical machine, thereby improving the power density. In this paper, a hydrostatic radial piston pump has been evaluated for integration with an axial flux PM machine. The proposed hydrostatic piston pump uses a spherical head piston that can tilt while reciprocating inside the cylinder, eliminating the need for a joint at the slipper. To reduce the frictional loss between the slipper pad and the cam at high operating speeds, the cam freely rotates. A detailed model of the pump, with focus on the hydrostatic piston slipper, has been developed and a grid search approach has been utilized to select the critical parameters of the pump. Finally, an efficiency map has been presented for this pump at different operating conditions which shows around 86% efficiency at the 12500 rpm speed for 7 MPa pressure differentials.
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Bohach, Garrett R., Nishanth, Eric Severson, and James D. Van de Ven. "Modeling and Optimization Study of a Tightly Integrated Rotary Electric Motor-Hydraulic Pump." In ASME/BATH 2019 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/fpmc2019-1626.

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Abstract To meet the growing trend of electrification of mechanical systems, this paper presents a compactly integrated electric motor and hydraulic pump. The proposed application for this machine requires high flow rates at low pressure differentials and four quadrant operation. The hydraulic pump architecture selected for this machine is a radial ball piston pump. An inside impinged version of this architecture allows for efficient filling of the chambers and is radial balanced, both of which allow highspeed operation for increased power density. The radial ball piston pump is less expensive to manufacture and is radially more compact than a standard radial cylindrical piston pump. A model of the pump and the integrated electric motor have been created to study scaling relationships and drive detailed design and optimization. The scaling study considers how displacement is affected by pump diameter, and how the diameter and required torque change with angular velocity. The detailed model considers the effect of valve timing, piston-cylinder clearance, and pump geometry on the efficiency. The model is then exercised in an optimization of the machine parameters.
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Mehta, Viral S., and Noah D. Manring. "Piston Pump Noise Attenuation Through Modification of Piston Travel Trajectory." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37394.

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Piston pumps are widely used in industrial and mobile applications to transmit power. These pumps emit loud and objectionable noise when operated at high pressure and high speeds. It is generally accepted that large amplitude of flow ripple causes pumps to produce unacceptable noise level. The flow ripple could be thought of composed of two components — a kinematic component resulting out of periodic nature of flow and a dynamic component resulting due to compression and decompression of fluid. There has been considerable research activity to reduce the noise induced by the dynamic component however very little is done to attenuate the noise generated due to the periodic nature of flow. This research investigated one method to reduce noise associated with kinematic component for axial and radial type piston pumps. A theoretical analysis is presented deriving the equations defining the motion of pistons on their regular trajectory as well as their modified trajectory. It is shown here that by altering the trajectory of the piston travel the amplitude of the kinematic flow component could be reduced by up to 85% in some conditions. While effectiveness of the techniques aimed at reducing the dynamic flow component are speed and pressure dependent, the techniques presented here work with same effectiveness throughout the entire spectrum of speed and pressure towards reducing the noise.
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Bohach, Garrett, Md Minal Nahin, Eric Severson, and James D. Van de Ven. "Impact of Dynamics on the Losses at Radial Ball Piston Pump Interfaces." In BATH/ASME 2020 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fpmc2020-2769.

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Abstract This paper presents a mathematical model of a radial ball piston pump/motor. The specific application of the pump is for direct integration with a high speed electric motor for use in off highway vehicles. The pump/motor must operate across all four quadrants with high flow rates at a low pressure differential. The model captures the major mechanical and volumetric losses within the hydraulic machine with specific attention given to the ball-cylinder interface and the pintle-rotor interface. The leakage and shear at the ball piston interface are dependent on the position of the ball piston in the cylinder; therefore, the dynamics of the ball piston are calculated. The pintle-rotor model includes the port geometry, which influences the flow rates into and out of the pump/motor. Leakage and shear at the interface are dependent on the gap height between the two surfaces; consequently, the model calculates the radial forces acting on the rotor and uses journal bearing theory to predict the eccentricity. This eccentricity balances the other forces and is necessary to determine the interface losses. Lastly, the importance of these dynamics is evaluated to determine which are needed in a future optimization framework. It is shown that considering the dynamics of both interfaces captures significantly more losses and results in a more accurate model than an earlier simplified one.
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Qiu, Xinguo, Libin Chen, and Wei Jiang. "Simulation of the Flow Control of Radial Piston Pump Based on Simulink." In 2010 2nd International Conference on Information Engineering and Computer Science (ICIECS). IEEE, 2010. http://dx.doi.org/10.1109/iciecs.2010.5678140.

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Wang, Sanwu, Wenkai Ou, Yuandong Qiu, Jiang Wu, and Yaodeng Fan. "Research of the radial piston pump shaft dynamic balance and structure improvement." In 2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA). IEEE, 2016. http://dx.doi.org/10.1109/iciea.2016.7603594.

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Batdorff, Mark A., and John H. Lumkes. "Virtually Variable Displacement Hydraulic Pump Including Compressability and Switching Losses." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14838.

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Hydraulic pumps can be fixed or variable displacement. Fixed displacement pumps are typically smaller, lighter, less expensive, and can be of any design (gear, vane, axial piston, radial piston, ect.)[1]. Variable displacement pumps are often axial piston with an adjustable swash plate. A virtually variable displacement pump (VVDP) is a fixed displacement pump combined with a fast switching control valve that performs the same function as a variable displacement pump. This is done by always pumping full flow, but using the control valve to divert only a certain percentage of flow to the system, and the rest back to tank. A VVDP has several advantages over a traditional variable swash axial piston pump. First, the pump can be of any design, not just axial piston. Second, the flow control bandwidth can be much faster because it is only limited by the bandwidth of the fast switching control valve and system accumulator, not the bandwidth of a swash plate. Third, a VVDP pump can be more efficient because it can operate at its optimum pressure and flow setting. On the downside a VVDP will require a high speed valve. There are also added switching power losses due to constant metering over valves, compressing and decompressing hydraulic oil, and metering during transition between pumping to system and tank. This paper concentrates on modeling these three switching losses.
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Guo, Tong, Shengdun Zhao, Xiaolan Han, Renfeng Zhao, and Sheng Li. "Research on the rotational inertia of radial piston pump and the optimization method of the pump parameters." In 2014 11th IEEE International Conference on Control & Automation (ICCA). IEEE, 2014. http://dx.doi.org/10.1109/icca.2014.6870955.

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