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TECHNICAL PAPERS

Estimation of Turbine Torque of Automatic Transmissions Using Nonlinear Observers

[+] Author and Article Information
Kyongsu Yi

School of Mechanical Engineering, Hanyang University, Seoul, 133-791, Korea

Byung-Kwan Shin

Graduate School, Department of Mechanical Design & Production Engineering, Seoul National University, Seoul 151-742, Korea

Kyo-II Lee

School of Mechanical and Aerospace Engineering Seoul National University, Seoul 151-742, Korea

J. Dyn. Sys., Meas., Control 122(2), 276-283 (Oct 19, 1995) (8 pages) doi:10.1115/1.482453 History: Received October 19, 1995
Copyright © 2000 by ASME
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References

Figures

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Vehicle/transmission model
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Experimental test setup
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Schematic diagram of experimental test setup
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Effect of torque converter oil temperature on turbine torque. (a) 50 percent driving torque. (b) 70 percent driving torque. (c) 90 percent driving torque.
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Comparison of simulation and experiment results. (a) Comparison of turbine speeds. (b) Comparison of transmission output speeds.
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Pressure at oncoming clutch during 2–3 upshift
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Comparison of transmission output torque
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Simulation results. (a) Engine, turbine, and output speeds. (b) Vehicle speed.
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A comparison of actual and estimated turbine speeds
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Time histories of the adapted torque converter parameters
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A comparison of actual and estimated turbine torques
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A Comparison of measured and estimated turbine speeds
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Time histories of the adapted torque converter parameters
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A comparison of the turbine torques

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