A torque converter lock-up clutch slip control system, which is designed to improve fuel economy, must be able to precisely regulate slip speed. Also the system must have a high level of robustness for coping with changes in the operating conditions and any deterioration in the automatic transmission fluid and the clutch. Moreover, to reduce the design time, the design process must be as simple as possible. In this paper, we first propose a loop shaping that aims to optimize complementary sensitivity function of the control system, while satisfying the abovementioned requirements of performance and robustness. Next, a method for simplifying the design process is proposed, that is, a model and a controller are expressed by interpolation. A controller set, which has a relationship of duality to the interpolation parameters of the model, is created in advance so that the construction of a new control system can be realized by identifying the characteristic parameters only. From application to the actual design process for a vehicle, we verified that the design time was reduced to less than of that required for the conventional method. This new method has already been adopted for the design and fitting of new products.
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e-mail: hibino@mosk.tytlabs.co.jp
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January 2009
Research Papers
Robust and Simplified Design of Slip Control System for Torque Converter Lock-Up Clutch
R. Hibino,
e-mail: hibino@mosk.tytlabs.co.jp
R. Hibino
Toyota Central R&D Laboratory, Inc.
, Nagakute, Aichi 480-1192, Japan
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M. Osawa,
M. Osawa
Toyota Central R&D Laboratory, Inc.
, Nagakute, Aichi 480-1192, Japan
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K. Kono,
K. Kono
Toyota Motor Corporation
, Toyota, Aichi 471-8572, Japan
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K. Yoshizawa
K. Yoshizawa
Toyota Motor Corporation
, Toyota, Aichi 471-8572, Japan
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R. Hibino
Toyota Central R&D Laboratory, Inc.
, Nagakute, Aichi 480-1192, Japane-mail: hibino@mosk.tytlabs.co.jp
M. Osawa
Toyota Central R&D Laboratory, Inc.
, Nagakute, Aichi 480-1192, Japan
K. Kono
Toyota Motor Corporation
, Toyota, Aichi 471-8572, Japan
K. Yoshizawa
Toyota Motor Corporation
, Toyota, Aichi 471-8572, JapanJ. Dyn. Sys., Meas., Control. Jan 2009, 131(1): 011008 (10 pages)
Published Online: December 8, 2008
Article history
Received:
August 13, 2007
Revised:
August 14, 2008
Published:
December 8, 2008
Citation
Hibino, R., Osawa, M., Kono, K., and Yoshizawa, K. (December 8, 2008). "Robust and Simplified Design of Slip Control System for Torque Converter Lock-Up Clutch." ASME. J. Dyn. Sys., Meas., Control. January 2009; 131(1): 011008. https://doi.org/10.1115/1.3023116
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