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Research Papers

Modeling of a Dry Dual Clutch Utilizing a Lever-Based Electromechanical Actuator

[+] Author and Article Information
Joško Deur

Faculty of Mechanical Engineering
and Naval Architecture,
University of Zagreb,
Ivana Lučića 5,
Zagreb HR-10002, Croatia
e-mail: josko.deur@fsb.hr

Milan Milutinović

Faculty of Mechanical Engineering
and Naval Architecture,
University of Zagreb,
Ivana Lučića 5,
Zagreb HR-10002, Croatia
e-mail: milan.milutinovic@fsb.hr

Vladimir Ivanović

Ford Research and Innovation Center,
2101 Village Road,
Dearborn, MI 48121
e-mail: vivanovi@ford.com

H. Eric Tseng

Ford Research and Innovation Center,
2101 Village Road,
Dearborn, MI 48121
e-mail: htseng@ford.com

1Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received July 23, 2015; final manuscript received February 23, 2016; published online June 15, 2016. Assoc. Editor: Zongxuan Sun.

J. Dyn. Sys., Meas., Control 138(9), 091012 (Jun 15, 2016) (11 pages) Paper No: DS-15-1337; doi: 10.1115/1.4033621 History: Received July 23, 2015; Revised February 23, 2016

The paper proposes a dynamic model of an automotive dry dual clutch system, which comprises submodels of a lever-based electromechanical actuator and a dual clutch assembly. The model is developed by using the bond graph approach, and it can be used for clutch design, analysis, and control tasks. Special attention is devoted to modeling of friction, compliance, and lever geometry effects, as they are the ones that predominantly determine the accuracy of clutch static curve description and computational efficiency of the model. Several custom-designed test rigs are utilized for the purpose of collecting the experimental data needed for model parameterization and validation. Experimental validation demonstrates a good modeling accuracy for a wide range of operating parameters.

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Figures

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Fig. 1

Functional scheme of dry dual clutch system

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Fig. 2

Illustration of clutch assembly model structure and its connection to actuator (clutch 2)

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Fig. 3

Test rigs of clutch actuator (a), dual clutch assembly (b), and overall clutch system (c)

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Fig. 4

Bond graph model of dry dual clutch system

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Fig. 5

Models of nonlinear spring elements: lever support (a),engagement bearing support (b), diaphragm spring (c), and friction plate (d)

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Fig. 6

Overview of procedure of reconstructing lever geometry parameters

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Fig. 7

Illustration of lever geometry parameter reconstruction based on first CAD model (a) and (b) and second CAD model (c)

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Fig. 8

Experimental validation results for actuator submodel: (a) LFS MPR, soft loading spring and zero MA, (b) LFS MPR, stiff spring and zero MA, (c) LFS MPR, stiff spring and negative MA (preload exists), (d) high-frequency sinusoidal MPR, stiff spring and zero MA, (e) stepwise change of MPR in medium steps, stiff spring and zero MA, and (f) stepwise change of MPR in small steps, stiff spring and zero MA

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Fig. 9

Model validation results for large amplitude of actuator position sinusoidal signal

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Fig. 10

Model validation results for different ranges of actuator motor position variation

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Fig. 11

Modified bond graph model of clutch assembly dynamics

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