The purpose of this paper is to develop a comprehensive nonlinear model of a typical direct acting solenoid valves utilized for clutch control in wet dual clutch transmissions. To do so, mathematical models of the integrated electrohydraulic solenoid valve and wet clutch piston assembly are developed in the Simulink environment of Matlab. Through simulation the operating characteristics of the control valve are analyzed, demonstrating that the valve achieves dual functionalities of high flow and accurate pressure control depending on demands. This is realized through the designed force balancing of the valve spool. The dependency of the system to system variables on input pressure and the influence of air content on dynamic response of the valve are investigated. The resilience of output pressure is demonstrated to these variables, indicating strong system reliability. Finally, the model is then validated using in situ experimental testing on a powertrain test rig. The comparison of experimental and simulated results for steady state pressure as well as step and ramp input responses demonstrate good agreement.

References

References
1.
Holmes
,
G. R.
, and
Tamba
,
R. T.
,
2005
, “
Solenoid Control Valve
,” U.S. Patent No. 6,907,901.
2.
Song
,
X.
,
Wu
,
C. S.
, and
Sun
,
Z.
,
2012
, “
Design, Modeling, and Control of a Novel Automotive Transmission Clutch Actuation System
,”
IEEE/ASME Trans. Mech.
,
17
(
3
), pp.
582
587
.10.1109/TMECH.2011.2176499
3.
Walker
,
P. D.
,
Zhang
,
N.
, and
Tamba
,
R.
,
2011
, “
Control of Gear Shifts in Dual Clutch Transmission Powertrains
,”
Mech. Syst. Signal Process.
,
25
(
6
), pp.
1923
1936
.10.1016/j.ymssp.2010.08.018
4.
Yu
,
J.
,
Chen
,
Z.
, and
Lu
,
Y.
,
1994
, “
The Variation of Oil Effective Bulk Modulus With Pressure in Hydraulic Systems
,”
ASME J. Dyn. Sys., Meas. Control
,
116
(
1
), pp.
146
150
.10.1115/1.2900669
5.
Manring
,
N. D.
,
2005
,
Hydraulic Control Systems
,
Wiley
,
Hoboken, NJ
.
6.
Owen
,
W. S.
, and
Croft
,
E. A.
,
2003
, “
The Reduction of Stick-Slip Friction in Hydraulic Actuators
,”
IEEE/ASME Trans. Mech.
,
8
(
3
), pp.
362
371
.10.1109/TMECH.2003.816804
7.
Topcu
,
E. E.
,
Kamis
,
Z.
, and
Yuksel
,
I.
,
2008
, “
Simplified Numerical Solution of Electromechanical Systems by Look-Up Tables
,”
Mechatronics
,
18
, pp.
559
565
.10.1016/j.mechatronics.2008.05.006
8.
Lazar
,
C.
,
Caruntu
,
C. F.
, and
Balau
,
A. E.
,
2010
, “
Modelling and Predictive Control of an Electro-Hydraulic Actuated Wet Clutch for Automatic Transmission
,”
IEEE International Symposium on Industrial Electronics
,
Bari, Italy
, July 4–7, pp.
256
261
.
9.
Goetz
,
M.
,
2005
, “
Integrated Powertrain Control for Twin Clutch Transmissions
,” Ph.D. thesis, University of Leeds, Leeds, UK.
10.
Gad
,
O.
,
2013
, “
Comprehensive Nonlinear Modeling of a Pilot Operated Relief Valve
,”
ASME J. Dyn. Sys. Meas. Control
,
135
(
1
), p.
011011
.10.1115/1.4006883
11.
Wang
,
Y.
,
Kraska
,
M.
, and
Ortmann
,
W.
,
2001
, “
Dynamic Modeling of a Variable Force Solenoid and a Clutch for Hydraulic Control in Vehicle Transmission System
,”
Proceedings of American Control Conference
,
Arlington, VA
, June 25–27, pp.
1789
1793
.
12.
Morselli
,
R.
,
Zanasi
,
R.
,
Cirsone
,
R.
,
Sereni
,
E.
,
Bedogni
,
E.
, and
Sedoni
,
E.
,
2003
, “
Dynamic Modeling and Control of Electro-Hydraulic Wet Clutches
,”
Proceedings of the IEEE International Transaction Systems
,
Shanghai, China
, Oct 12–15, Vol.
1
, pp.
660
665
.
13.
Lucente
,
G.
,
Montanari
,
M.
, and
Rossi
,
C.
,
2007
, “
Modelling of an Automated Manual Transmission System
,”
Mechatronics
,
17
(
2–3
), pp.
73
91
.10.1016/j.mechatronics.2006.11.002
14.
Song
,
X. Y.
,
Sun
,
Z. X.
,
Yang
,
X. J.
, and
Zhu
,
G. M.
,
2010
, “
Modelling, Control, and Hardware-in-the-Loop Simulation of an Automated Manual Transmission
,”
Proc. IMechE, Part D: J. Auto.
,
224
(
2
), pp.
143
160
.10.1243/09544070JAUTO1284
15.
Watechagit
,
S.
, and
Srinivasan
,
K.
,
2003
, “
Modeling and Simulation of Shift Hydraulic System for a Stepped Automatic Transmission
,” SAE Technical Paper No. 2003-01-0314.
16.
Stringer
,
J.
,
1976
,
Hydraulic Systems Analysis: An Introduction
,
Macmillan Press Ltd
,
London, UK
.
17.
Norvelle
,
F. D.
,
2000
,
Electrohydraulic Control Systems
,
Prentice Hall, Upper Saddle River
,
NJ
.
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