A Review of Electro-Hydraulic Servovalve Research and Development

Authors

  • Paolo Tamburrano Department of Mechanics, Mathematics and Management (DMMM)–Polytechnic University of Bari, Via Orabona 4, 70125, Bari, Italy
  • Andrew R. Plummer Centre for power transmission and motion control (PTMC), Department of Mechanical Engineering, University of Bath, Claverton Down BA2 7AY, Bath, UK
  • Elia Distaso Department of Mechanics, Mathematics and Management (DMMM)–Polytechnic University of Bari, Via Orabona 4, 70125, Bari, Italy
  • Riccardo Amirante Department of Mechanics, Mathematics and Management (DMMM)–Polytechnic University of Bari, Via Orabona 4, 70125, Bari, Italy

DOI:

https://doi.org/10.13052/ijfp1439-9776.2013

Keywords:

Review, servovalve, control, piezoelectric actuator

Abstract

This paper provides a review of the state of the art of electro-hydraulic servovalves, which are widely used valves in industrial applications and aerospace, being key components for closed loop electrohydraulic motion control systems. The paper discusses their operating principles and the analytical models used to study these valves. Commercially available units are also analysed in detail, reporting the performance levels achieved by current servovalves in addition to discussing their advantages and drawbacks. Adetailed analysis of research that investigates these valves via computational fluid dynamic analysis is also provided. Research studies on novel control systems and novel configurations based on the use of smart materials, wh

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Author Biographies

Paolo Tamburrano, Department of Mechanics, Mathematics and Management (DMMM)–Polytechnic University of Bari, Via Orabona 4, 70125, Bari, Italy

Paolo Tamburrano, PhD, is a mechanical engineer. As of July 2018, he is a Marie Curie research fellow at the University of Bath and an assistant professor at the Polytechnic University of Bari. He received the doctorate degree from the Polytechnic University of Bari with dissertation of the thesis titled “Fluid dynamic design optimization of mechanical and energy systems”. His research interests regard servovalves, proportional valves, piezo actuators, renewable energies, gas turbines, combined cycles, ORC, heat exchangers, internal combustion engines, cyclone separators. To date, he is co-author of 40 papers indexed in Scopus.

Andrew R. Plummer, Centre for power transmission and motion control (PTMC), Department of Mechanical Engineering, University of Bath, Claverton Down BA2 7AY, Bath, UK

Andrew R. Plummer received his Ph.D from the University of Bath in 1991, for research into control of electro-hydraulic systems. He worked as a research engineer for Thales from 1990, developing flight simulator control technology, before joining the University of Leeds in 1994. From 1999 until 2006 he was global control systems R&D manager for Instron, manufacturers of materials and structural testing systems. He is now Director of the Centre for Power Transmission and Motion Control, University of Bath, and has published 160 papers in the field of motion and force control, many relating to electro-hydraulic servo-systems. Prof. Plummer is Past Chair of the Institution of Mechanical Engineers Mechatronics Informatics and Control Group and also the UK Automatic Control Council, and is Associate Editor of both the International Journal of Fluid Power and Control Engineering Practice. He is Chair of the Global Fluid Power Society.

Elia Distaso, Department of Mechanics, Mathematics and Management (DMMM)–Polytechnic University of Bari, Via Orabona 4, 70125, Bari, Italy

Elia Distaso was born in Foggia on July 5, 1989. Graduated with honors in Mechanical Engineering at Polytechnic of Bari (Italy) in 2013, defending a Master’s Thesis based on an experimental work carried out at the FCA Research Center in Foggia (Italy). At the beginning of 2017, he received his Ph.D. from Polytechnic of Bari (Italy). From 2014 to 2016, he worked as Honorary Associate/Fellow (visiting scholar) at the Engine Research Center of University ofWisconsin-Madison, USA, were he worked on soot modeling under the guidance of Emeritus Professor Rolf D. Reitz. He is currently a postdoc fellow at the Polytechnic of Bari and his research activities concern the study of the combustion and emission formation processes, the analysis and the design of energy generation and heat-exchange systems, the experimental and numerical analysis of multi-phases flows with applications in the design of proportional valves by means of optimization techniques.

Riccardo Amirante, Department of Mechanics, Mathematics and Management (DMMM)–Polytechnic University of Bari, Via Orabona 4, 70125, Bari, Italy

Riccardo Amirante received the first degree (5 years) with honours in Civil Engineering during Academic Years 1991/92 and the Ph.D. in “Machineengineering” in 1997, both from the Polytechnic University of Bari. He has been assistant professor at the University of Molise since from 1996 and is assistant professor of Energy systems, Internal Combustion Engines and Turbomachinery at the Polytechnic University of Bari from 2000. He has been associate professor from 2012 and full professor from 2017. Initially his research interests are in the field of fluid dynamic design problems applied to horizontal centrifugal separators and with their applications to industrial process. During this period, he obtained the first national prize for the better scientific paper about olive oil industry. Successively his research interests are in the field of Hydraulic transmissions, and he is actually first manager of Hydraulic and pneumatic laboratory of Department. He strongly cooperated in
many national research projects. During the last years, he teaches many courses in University of Molise and Polytechnic University di Bari: Fluid Automation, Hydraulic transmissions, Agro alimentary machineries and plants, Energy systems, and so on. He is co-author of about 100 papers, most of which presented at international conferences or published in international journals. </p>

References

Amirante, R., Catalano, L. A., & Tamburrano, P. (2014a). The importance of

a full 3D fluid dynamic analysis to evaluate the flow forces in a hydraulic

directional proportional valve. Engineering Computations, 31(5), 898–922.

https://doi.org/10.1108/EC-09-2012-0221

Amirante, R., Catalano, L. A., Poloni, C., & Tamburrano, P. (2014b).

Fluid-dynamic design optimization of hydraulic proportional directional

valves. Engineering Optimization, 46(10), 1295–1314. https://doi.org/

1080/0305215X.2013.836638

Amirante, R., Distaso, E., & Tamburrano, P. (2014c). Experimental

and numerical analysis of cavitation in hydraulic proportional directional

valves. Energy Conversion and Management, 87, 208–219.

https://doi.org/10.1016/j.enconman.2014.07.031

Amirante, R., Distaso, E., & Tamburrano, P. (2016). Sliding spool design

for reducing the actuation forces in direct operated proportional directional

valves: Experimental validation. Energy Conversion and Management, 119,

–410. https://doi.org/10.1016/j.enconman.2016.04.068

Anderson, R. T., & Li, P. Y. (2002). Mathematical Modeling of a Two

Spool Flow Control Servovalve Using a Pressure Control Pilot. Journal

of Dynamic Systems, Measurement, and Control, 124(3), 420–427.

https://doi.org/10.1115/1.1485287

Atchley, R. D. (1959). U.S. patent 2884907 R.D. Atchley. FiledAugust 1957 –

issued May 1959.

Aung, N. Z., & Li, S. (2014). A numerical study of cavitation phenomenon

in a flapper-nozzle pilot stage of an electrohydraulic servo-valve with an

innovative flapper shape. Energy Conversion and Management, 77, 31–39.

https://doi.org/10.1016/j.enconman.2013.09.009

Aung, N. Z., Yang, Q., Chen, M., & Li, S. (2014). CFD analysis of flow

forces and energy loss characteristics in a flapper-nozzle pilot valve with

different null clearances. Energy Conversion and Management, 83, 284–

https://doi.org/10.1016/j.enconman.2014.03.076

Bang, Y. B., Joo, C. S., Lee, K. I., Hur, J. W., & Lim, W. K.

(2003). Development of a two-stage high speed electrohydraulic servovalve

systems using stack-type piezoelectric elements. In IEEE/ASME

International Conference on Advanced Intelligent Mechatronics,AIM (Vol.

, pp. 131–136). https://doi.org/10.1109/AIM.2003.1225084

Bertin, M. (2017). Piezoelectric actuation of an aero engine fuel metering

valve. PhD Thesis. Department of Mechanical Engineering Centre for

Power Transmission and Motion Control, University of Bath.

Bertin, M. J. F., Bowen, C. R., Plummer, A. R., & Johnston, D. N. (2014).

An Investigation of Piezoelectric Ring Benders and Their Potential for

Actuating Servo Valves. In Proceedings of the Bath/ASME Symposium on

Fluid Power and Motion Control, Bath, United Kingdom, September 10–

, 2014 (p. 6). https://doi.org/10.1115/FPMC2014-7852

Blackburn, J. F., Reethof, G., & Shearer, J. L. (1960). Fluid power control,

The Mit press and Wiley.

Boyar, R. E., Johnson, B. A., & Schmid, L. (1955). Hydraulic Servo Control

Valves. WADC Technical Report 55-29, Wright-Patterson Air Force Base,

Ohio, 23–35.

Branson, D. T., Wang, F. C., Johnston, D. N., Tilley, D. G., Bowen, C. R.,

& Keogh, P. S. (2011). Piezoelectrically actuated hydraulic valve design

for high bandwidth and flow performance. Proceedings of the Institution of

Mechanical Engineers. Part I: Journal of Systems and Control Engineering,

(3), 345–359. https://doi.org/10.1177/09596518JSCE1037

Brito, A. G., Filho, W. C. L., & Hemerly, E. M. (2013). Identification

of a Hammerstein model for an aerospace electrohydraulic servovalve.

In IFAC Proceedings Volumes (IFAC-PapersOnline) 46(19), 459–463.

https://doi.org/10.3182/20130902-5-DE-2040.00119

Carson, T. H. (1960). U.S. patent 2934765. Filed Sept. 1955 – issued April

Cedrat. (2017). http://www.cedrat-technologies.com/en/products/actuators/

apa.html. Accessed September 2017.

Cheng, G. M., Li, P., Yang, Z. G. E, S. J., & Liu, J.F. (2005). Doublenozzle

piezoelectric servovalve. Guangxue Jingmi Gongcheng/Optics and

Precision Engineering, 13(3), 276–282.

Claeyssen, F., Lhermet, N., & Maillard, T. (2003). Magnetostrictive actuators

compared to piezoelectric actuators. In Proceedings of SPIE – The

International Society for Optical Engineering.

Di Rito, G., & Galatolo, R. (2008). Experimental and theoretical study of

the electrical failures in a fault-tolerant direct-drive servovalve for primary

flight actuators. Proceedings of the Institution of Mechanical Engineers.

Part I: Journal of Systems and Control Engineering, 222(8), 757–769.

https://doi.org/10.1243/09596518JSCE588

El-Araby, M., El-Kafrawy, A., & Fahmy, A. (2011). Dynamic performance of

a nonlinear non-dimensional two stage electrohydraulic servovalve model.

International Journal of Mechanics and Materials in Design, 7(2), 99–110.

https://doi.org/10.1007/s10999-011-9150-x

Fang, X., Yao, J., Yin, X., Chen, X., & Zhang, C. (2013). Physicsof-

failure models of erosion wear in electrohydraulic servovalve, and

erosion wear life prediction method. Mechatronics, 23(8), 1202–1214.

https://doi.org/10.1016/j.mechatronics.2013.09.006

Fink, A., & Singh, T. (1998). Discrete sliding mode controller for pressure

control with an electrohydraulic servovalve. Proceedings of the 1998 IEEE

International Conference on Control Applications, 1(September), 378–382.

Ghasemi, E., Jazayeri, S. A., & Moosavian, S. A. A. (2008). Model

improvement for a servovalve with force feedback and back pressure.

In 2008 IEEE International Conference on Robotics, Automation and

Mechatronics,RAM2008 (pp. 895–900). https://doi.org/10.1109/RAMECH.

4681461

Gordi´c, D., Babi´c, M., & Joviˇci´c, N. (2004). Modelling of spool position

feedback servovalves. International Journal of Fluid Power, 5(1), 37–51.

https://doi.org/10.1080/14399776.2004.10781182

Gordi´c, D., Babi´c, M., Joviˇci´c, N., & Milovanovi´c, D. (2008). Effects of the

variation of torque motor parameters on servovalve performance. Strojniski

Vestnik/Journal of Mechanical Engineering, 54(12), 866–873.

Grunwald, A., & Olabi, A. G. (2008). Design of a magnetostrictive

(MS) actuator. Sensors and Actuators, A: Physical, 144(1), 161–175.

https://doi.org/10.1016/j.sna.2007.12.034

Hiremath, S. (2013). Modeling and simulation of fluid structure interaction

in jet pipe electrohydraulic servovalve. International Journal of Recent

Advances in Mechanical Engineering (IJMECH), 2(4), 1–14.

Hiremath, S. S., & Singaperumal, M. (2010). Fluid structure interaction in

electrohydraulic servovalve: A finite element approach. In Proceedings of

SPIE – The International Society for Optical Engineering (Vol. 7500).

Hunt, T., & Vaughan, N. (1996). The Hydraulic Handbook, 9th edition,

copyright Elsevier science LTD.

Istanto, I., Kim, H. H., & Lee, I. Y. (2017). Effects of major design

parameters on three-stage electro-hydraulic servovalve performance.

In Lecture Notes in Electrical Engineering, 415 (LNEE), 459–468.

https://doi.org/10.1007/978-3-319-50904-4 49

Jacob, McHenya, M., Zhang, S., & Li, S. (2011). A study of flow-field

distribution between the flapper and nozzle in a hydraulic servo-valve.

Proceedings of 2011 International Conference on Fluid Power and Mechatronics,

FPM 2011, 658–662. https://doi.org/10.1109/FPM.2011.6045844

Jeon, J., Han, C., Han, Y. M., & Choi, S. B. (2014). A new type of a directdrive

valve system driven by a piezostack actuator and sliding spool. Smart

Materials and Structures, 23(7), 075002. https://doi.org/10.1088/0964-

/23/7/075002

Karunanidhi, S., & Singaperumal, M. (2010a). Mathematical modelling and

experimental characterization of a high dynamic servo valve integrated

with piezoelectric actuator. Proceedings of the Institution of Mechanical

Engineers. Part I: Journal of Systems and Control Engineering, 224(4),

–435. https://doi.org/10.1243/09596518JSCE899

Karunanidhi, S., & Singaperumal, M. (2010b). Design, analysis and

simulation of magnetostrictive actuator and its application to high dynamic

servo valve. Sensors and Actuators, A: Physical, 157(2), 185–197.

https://doi.org/10.1016/j.sna.2009.11.014

Li, L., Yan, H., Zhang, H., & Li, J. (2018). Numerical simulation and

experimental research of the flow force and forced vibration in the nozzleflapper

valve. Mechanical Systems and Signal Processing, 99, 550–566.

https://doi.org/10.1016/j.ymssp.2017.06.024

Li, P. Y. (2002). Dynamic Redesign of a Flow Control Servovalve Using a

Pressure Control Pilot. Journal of Dynamic Systems, Measurement, and

Control, 124(3), 428–434. https://doi.org/10.1115/1.1485288

Li, S., Aung, N. Z., Zhang, S., Cao, J., & Xue, X. (2013). Experimental

and numerical investigation of cavitation phenomenon in flapper-nozzle

pilot stage of an electrohydraulic servo-valve. Computers and Fluids, 88,

–598. https://doi.org/10.1016/j.compfluid.2013.10.016

Li, Y. (2016). Mathematical modelling and characteristics of the pilot valve

applied to a jet-pipe/deflector-jet servovalve. Sensors and Actuators, A:

Physical, 245, 150–159. https://doi.org/10.1016/j.sna.2016.04.048

Lin, S. J., & Akers, A. (1989). A Dynamic Model of the Flapper-

Nozzle Component of an Electrohydraulic Servovalve. Journal of Dynamic Systems, Measurement, and Control, 111(1), 105–109.

https://doi.org/10.1115/1.3153006

Lindler, J. E.,&Anderson, E. H. (2002). Piezoelectric direct drive servovalve.

In SPIE’s 9th Annual International Symposium on Smart Structures and

Materials, 2002, San Diego, California, United States.

Liu, X., He, J., Ye, Z., Cong, D., & Han, J. (2009). Modeling and

key technologies study of three-stage electro-hydraulic servo valve.

In Proceedings – 2009 International Asia Conference on Informatics

in Control, Automation, and Robotics, CAR 2009 (pp. 317–320).

https://doi.org/10.1109/CAR.2009.78

Maré, J. -C., & Attar, B. (2008). Realistic modelling of electrohydraulic

servovalves. In 6th International Fluid Power Conference – IFK 2008.

Maskrey, R. H., & Thayer, W. J. (1978). A Brief History of Electrohydraulic

Servomechanisms. Journal of Dynamic Systems, Measurement, and

Control, 100(2), 110–116. https://doi.org/10.1115/1.3426352

Mcnea, M., & Duan, S. S. (2013). The Effects of Orifice Sizes on a Hydraulic

Servo Valve Control System. In ASME 2013 International Mechanical

Engineering Congress and Exposition.

Merritt, H. (1967). Hydraulic Control System. John Wiley and Sons.

Milecki, A. (2006). Modelling & investigations of electrohydraulic servo

valve with piezo element. Maszyn i Automatyzacji,Archiwum Technologii,

(2), 177–184.

Mondal, N., & Datta, B. (2017). Effect of damping length on

dynamic performance of two-stage two-spool electrohydraulic servovalve.

Lecture Notes in Mechanical Engineering, Part F8, 1213–1222.

https://doi.org/10.1007/978-81-322-2743-4 115

Mondal, N., & Datta, B. N. (2013). A study on electro hydraulic servovalve

controlled by a two spool valve. International Journal of Emerging Technology

and Advanced Engineering An ISO Certified Int. Journal, 3(9001),

–484. Retrieved from www.ijetae.com

Moog. (1953). U.S. Patent 2625136 W.C. Moog filed April 1950-issued

January 1953.

Moog. (1965). U.S. Patent 2767689 W.C. Moog filed May 1953-issued

October 1965.

Moog. (2017). http://www.moog.com/products/servovalves-servo-proportio

nal-valves.html. Accessed September 2017.

Noliac. (2017). http://www.noliac.com/products/actuators/plate-stacks/.Accessed

September 2017.

Pan, X., Wang, G., & Lu, Z. (2011). Flow field simulation and a flow model

of servo-valve spool valve orifice. Energy Conversion and Management,

(10), 3249–3256. https://doi.org/10.1016/j.enconman.2011.05.010

Parr,A. (2011). Hydraulics and Pneumatics (Third edition) A technician’s and

engineer’s guide. (Elsevier, Ed.). Butterworth-Heinemann, The Boulevard,

Langford Lane, Kidlington, Oxford OX5 1GB, UK.

Persson, J., Plummer, A., Bowen, C., & Elliott, P. (2017). Non-linear Control

of a Piezoelectric Two Stage Servovalve. The 15th Scandinavian International

Conference on Fluid Power, SICFP’17, June 7-9, 2017, Link¨oping,

Sweden.

Persson, J., Plummer, A. R., Bowen, C. R., & Brooks, I. (2015).

Design and Modelling of a Novel Servovalve Actuated by a Piezoelectric

Ring Bender. In ASME/BATH 2015 Symposium on Fluid Power

and Motion Control, October 12–14, 2015, Chicago, Illinois, USA.

https://doi.org/10.1115/FPMC2015-9576

Persson, J., Plummer, A. R., Bowen, C. R., & Elliott, P. L. (2016). Dynamic

Modelling and Performance of a Two Stage Piezoelectric Servovalve. In

th FPNI Ph. D. Symposium on Fluid Power. American Society of Mechanic

Engineers.

Plummer,A. (2016). Electrohydraulic servovalves – past , present , and future.

th International Fluid Power Conference (IFK2016), 405–424.

Rashidy, H., Rezeka, S., Saafan, A., & Awad, T. (2003). A hierarchical

neuro-fuzzy system for identification of simultaneous faults in hydraulic

servovalves. Proceedings of the 2003 American Control Conference, 2003,

, 4269–4274. https://doi.org/10.1109/ACC.2003.1240507

Reichert, M. (2006). High response hydraulic servovalve with piezo-actuators

in the pilot stage. Olhydraulik and Pneumatik, 12, 1–17.

Samakwong, T., & Assawinchaichote, W. (2016). PID Controller

Design for Electro-hydraulic Servo Valve System with Genetic

Algorithm. In Procedia Computer Science (Vol. 86, pp. 91–94).

https://doi.org/10.1016/j.procs.2016.05.023

Sangiah, D. K., Plummer, A. R., Bowen, C. R., & Guerrier, P. (2011).

Modelling and Experimental Validation of a Novel Piezohydraulic Servovalve.

In ASME 2011 Dynamic Systems and Control Conference and

Bath/ASME Symposium on Fluid Power and Motion Control, Volume 2

(Vol. 2, pp. 343–350). https://doi.org/10.1115/DSCC2011-5940

Sangiah, D. K., Plummer, A. R., Bowen, C. R., & Guerrier, P. (2013).

A novel piezohydraulic aerospace servovalve. Part 1: Design and

modelling. Proceedings of the Institution of Mechanical Engineers.

art I: Journal of Systems and Control Engineering, 227(4), 371–389.

https://doi.org/10.1177/0959651813478288

Sedziak, D. (2010). Investigations of Electrohydraulic Servo Valves with

Piezo Bender as Control Element. In 7th International Fluid Power

Conference (pp. 1–12).

Sell, N. P., Johnston, D. N., Plummer, A. R., & Kudzma, S. (2013). Control

of a fast switching valve for digital hydraulics. The 13th Scandinavian

International Conference on Fluid Power, 497–503.

Stefanski, F., Minorowicz, B., Persson, J., Plummer, A., & Bowen, C. (2017).

Non-linear control of a hydraulic piezo-valve using a generalised Prandtl–

Ishlinskii hysteresis model. Mechanical Systems and Signal Processing,

, 412–431. https://doi.org/10.1016/j.ymssp.2016.05.032

Tamburrano, P., Amirante, R., Distaso, E.,&Plummer, A. R. (2018a).Anovel

piezoelectric double-flapper servovalve pilot stage: Operating principle and

performance prediction. In Bath/ASME Symposium on Fluid Power and

Motion Control FPMC. 2018, 12–14 September 2018, University of Bath,

Bath (UK).

Tamburrano, P., Amirante, R., Distaso, E., & Plummer, A. R. (2018b). Full

simulation of a piezoelectric double nozzle flapper pilot valve coupled with

a main stage spool valve. Energy Procedia 148, 487–494.

Tamburrano, P., Plummer, A. R., Distaso, E., & Amirante, R. (2019). A

review of direct drive proportional electrohydraulic spool valves: industrial

state-of-the-art and research advancements. Journal of Dynamic Systems,

Measurement, and Control, 141(2), 020801. doi:10.1115/1.4041063.

Thorlabs. (2017). https://www.thorlabs.com/thorproduct.cfm?partnumber=P

B4NB2W. Accessed September 2017.

Tinsley. (1949). English patent 620688 . Applied May 1946-accepted March

Urata, P. E., Suzuki, K., & Mori, T. (2008). The Stiffness of Armature

Support in Servovalve Torque-Motors. In 6th International Fluid Power

Conference – IFK 2008 (pp. 113–126).

Wolpin, M. P. (1965). U.S. patent 3209782 M.P. Wolpin. Filed May 1955 –

issued October 1965.

Yang, Z., He, Z., Li, D., Xue, G., & Cui, X. (2014). Hydraulic amplifier

design and its application to direct drive valve based on magnetostrictive

actuator. Sensors and Actuators, A: Physical, 216, 52–63.

https://doi.org/10.1016/j.sna.2014.05.005

Yang, Q., Aung, N. Z., & Li, S. (2015a). Confirmation on the

effectiveness of rectangle-shaped flapper in reducing cavitation in flappernozzle

pilot valve. Energy Conversion and Management, 98, 184–198.

https://doi.org/10.1016/j.enconman.2015.03.096

Yang, Z., He, Z., Li, D., Yu, J., Cui, X., & Zhao, Z. (2015b). Direct drive

servo valve based on magnetostrictive actuator: Multi-coupled modeling

and its compound control strategy. Sensors and Actuators, A: Physical, 235,

–130. https://doi.org/10.1016/j.sna.2015.09.032

Ye, J., Xiong,Y., Li, F.,&Chen, S. (2010). Experimental study of effects of air

content on cavitation and pressure fluctuations. Journal of Hydrodynamics,

(5), 634–638. https://doi.org/10.1016/S1001-6058(09)60097-4

Yu, J., Zhuang, J., & Yu, D. (2014). Modeling and analysis of a rotary

direct drive servovalve. Chinese Journal of Mechanical Engineering, 27(5),

–1074. https://doi.org/10.3901/CJME.2014.0725.127

Zhang, K., Yao, J., & Jiang, T. (2014). Degradation assessment and life

prediction of electro-hydraulic servo valve under erosion wear. Engineering

Failure Analysis, 36, 284–300. https://doi.org/10.1016/j.engfailanal.2013.

017

Zhang, S., & Li, S. (2015). Cavity shedding dynamics in a flappernozzle

pilot stage of an electro-hydraulic servo-valve: Experiments and

numerical study. Energy Conversion and Management, 100, 370–379.

https://doi.org/10.1016/j.enconman.2015.04.047

Zhu, L., Shiju, E., Zhu, X., & Gao, C. (2010). Development of Hydroelectric

Servo-Valve Based on Piezoelectric Elements. In 2010 Int. Conf. Mech.

Autom. Control Eng. MACE2010 (pp. 3330– 3333).

Zhu, Y., & Li, Y. (2014). Development of a deflector-jet electrohydraulic

servovalve using a giant magnetostrictive material. Smart Materials and

Structures, 23(11). https://doi.org/10.1088/0964-1726/23/11/115001

Zhu, Y., Yang, X., & Wang, X. (2015). Development of a fournozzle

flapper servovalve driven by a giant magnetostrictive actuator.

Proceedings of the Institution of Mechanical Engineers. Part

I: Journal of Systems and Control Engineering, 229(4), 293–307.

https://doi.org/10.1177/0959651814565829

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Published

2019-04-18

How to Cite

Tamburrano, P., Plummer, A. R., Distaso, E., & Amirante, R. (2019). A Review of Electro-Hydraulic Servovalve Research and Development. International Journal of Fluid Power, 20(1), 53–98. https://doi.org/10.13052/ijfp1439-9776.2013

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2019: Vol 20 Iss 1

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Original Article