High flow rate electrohydraulic servo valve is widely applied in hydraulic servo systems. Typical high flow rate servo valve is three-stage nozzle flapper pilot structure which is complicated, unreliable, and highly costly. This study proposed a new two-stage structure high flow rate and quick response electrohydraulic spiral pilot servo valve (ESPV) using a novel hydraulic full bridge spiral pilot stage (FBSPS) as hydraulic amplifier. Its structure is simpler than traditional servo valve which could increase reliability. A design parameters optimization method for servo valve is proposed. It is using an optimization objective function which can balance dynamic performance, static performance, and pilot state efficiency for different design objectives. The particle swarm optimization (PSO) method was applied to get the best key design parameters of ESPV. A research prototype was developed based on the optimized parameters for fast response. The experimental results indicated that the frequency bandwidth (−3 dB amplitude attenuation and −90 deg phase lag) of the ESPV is up to 150 Hz at 20% of full range. This frequency response performance is competitive with existing servo valves, and the simpler structure can improve reliability and reduce cost. Thus, it may have great potential in hydraulic servo system with high reliability requirement, such as aircraft hydraulic servo control system.

References

References
1.
Merritt
,
H. E.
,
1967
,
Hydraulic Control Systems, Wiley
, New York.
2.
Marco
,
D.
, and
Gordon
,
P.
,
2001
, “
Dissecting High-Performance Electrohydraulic Valves
,”
Mach. Des.
,
73
(
7
), pp.
84
89
.
3.
Li
,
S.
, and
Song
,
Y.
,
2007
, “
Dynamic Response of a Hydraulic Servo-Valve Torque Motor With Magnetic Fluids
,”
Mechatronics
,
17
(
8
), pp.
442
447
.10.1016/j.mechatronics.2007.04.011
4.
Aung
,
N. Z.
,
Yang
,
Q.
,
Chen
,
M.
, and
Li
,
S.
,
2014
, “
CFD Analysis of Flow Forces and Energy Loss Characteristics in a Flapper-Nozzle Pilot Valve With Different Null Clearances
,”
Energy Convers. Manage.
,
83
, pp.
284
295
.10.1016/j.enconman.2014.03.076
5.
Aung
,
N.
, and
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 Convers. Manage.
,
77
, pp.
31
39
.10.1016/j.enconman.2013.09.009
6.
Pham
,
X. H. S.
, and
Yin
,
Y. B.
,
2012
, “
Research on Fluid Characteristics of Jet Pipe Electro-Hydraulic Servo-Valve Based on Structural Parameters
,”
2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics
(
IHMSC
), Vol.
2
, pp.
310
313
.10.1109/IHMSC.2012.170
7.
Bao
,
Y. Y.
,
Son
,
P. X. H.
, and
Zhang
,
X.
,
2012
, “
Dynamic Stiffness Analysis of Feedback Spring Pole in Jet Pipe Electro-Hydraulic Servo-Valve
,”
31st Chinese Control Conference (CCC)
, pp.
7245
7249
.
8.
Wang
,
X.
,
Li
,
Z.
,
Sun
,
S.
, and
Zheng
,
G.
,
2012
, “
Research on the Influence Factors of Cavitating Jet in Jet Pipe Amplifier Nozzle
,”
Appl. Mech. Mater.
,
229
, pp.
617
620
.10.4028/www.scientific.net/AMM.229-231.617
9.
Zhou
,
M.
,
Gao
,
W.
,
Tian
,
Y.
, and
Yang
,
Z.
,
2013
, “
Design and Experiment of Novel Piezoelectric Double Nozzle Flapper Electro-Hydraulic Servo Valve
,”
Int. J. Mater. Prod. Technol.
,
45
, pp.
41
52
.10.1504/IJMPT.2012.051330
10.
Liu
,
X.
,
He
,
J.
,
Ye
,
Z.
,
Cong
,
D.
, and
Han
,
J.
,
2009
, “
Modeling and Key Technologies Study of Three-Stage Electro-Hydraulic Servo Valve
,”
CAR’09
International Asia Conference on Informatics in Control
, Automation and Robotics, pp.
317
320
.10.1109/CAR.2009.78
11.
Moog Inc.
,
Servovalve With Integrated Electronics D791 and D792 Series
,
Moog Inc.
, East Aurora, NY.
12.
Rexroth Bosch Group
,
Directional Servo-Valve in 4-Way Version
,
Rexroth Bosch Group
, Lohr am Main, Germany.
13.
Ruan
,
J.
,
Burton
,
R.
, and
Ukrainetz
,
P.
,
2002
, “
An Investigation Into the Characteristics of a Two Dimensional 2D Flow Control Valve
,”
ASME J. Dyn. Syst. Meas. Control
,
124
(
1
), pp.
214
220
.10.1115/1.1433480
14.
Ruan
,
J.
,
Ukrainetz
,
P.
, and
Burton
,
R.
,
2000
, “
Frequency Domain Modelling and Identification of 2D Digital Servo Valve
,”
Int. J. Fluid Power
,
1
(
2
), pp.
49
58
.10.1080/14399776.2000.10781091
15.
Reichert
,
M.
, and
Murrenhoff
,
H.
,
2006
, “
New Concepts and Design of High Response Hydraulic Valves Using Piezo-Technology
,”
Power Transmission and Motion Control (PTMC 2006)
, University of Bath, Bath, UK, pp.
401
414
.
16.
Murrenhoff
,
H.
,
2006
, “
High Response Hydraulic Servovalve With Piezo-Actuators in the Pilot Stage
,”
Olhydraulik und Pneumatik
, Vereinigte Fachverlage GmbH, Lise-Meitner-Straße, Germany, pp.
1
17
.
17.
Wu
,
S.
,
Jiao
,
Z.
,
Yan
,
L.
,
Zhang
,
R.
,
Yu
,
J.
, and
Chen
,
C.-Y.
,
2013
, “
Development of a Direct-Drive Servo Valve With High-Frequency Voice Coil Motor and Advanced Digital Controller
,”
IEEE/ASME Trans. Mechatron.
,
19
(
3
), pp.
932
942
.10.1109/TMECH.2013.2264218
18.
Sente
,
P. A.
,
Labrique
,
F. M.
, and
Alexandre
,
P. J.
,
2012
, “
Efficient Control of a Piezoelectric Linear Actuator Embedded Into a Servo-Valve for Aeronautic Applications
,”
IEEE Trans. Ind. Electron.
,
59
(
4
), pp.
1971
1979
.10.1109/TIE.2011.2165450
19.
Takashi
,
M.
,
Toshinori
,
F.
,
Kazutoshi
,
S.
,
Kenji
,
K.
, and
Toshiharu
,
K.
,
2007
, “
Development of a Digital Control System for High-Performance Pneumatic Servo Valve
,”
Precis. Eng.
,
15
, pp.
1005
1024
.
20.
Yuken Kogyo Co., Ltd
.,
LSV(H)G Series High-Speed Linear Servo Valves
, Ayase, Kanagawa, Japan.
21.
Wu
,
S.
,
Jiao
,
Z.
, and
Yu
,
J.
,
2011
, “
Investigation into the Characteristics of Full-Bridge Spiral Pilot Stage
,”
International Conference on Fluid Power and Mechatronics (FPM)
,
IEEE
, Beijing, China, Aug. 17–20, pp.
757
762
.10.1109/FPM.2011.6045862
22.
Lin
,
C.-J.
, and
Lin
,
P.-T.
,
2012
, “
Particle Swarm Optimization Based Feedforward Controller for a XY PZT Positioning Stage
,”
Mechatronics
,
22
(
5
), pp.
614
628
.10.1016/j.mechatronics.2012.02.001
23.
Zhao
,
J.
, and
Seethaler
,
R. J.
,
2011
, “
A Fully Flexible Valve Actuation System for Internal Combustion Engines
,”
IEEE/ASME Trans. Mech.
,
16
(
2
), pp.
361
370
.10.1109/TMECH.2010.2043850
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