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Proceedings Paper

Nonlinear force feedback control of piezoelectric-hydraulic pump actuator for automotive transmission shift control
Author(s): Gi-Woo Kim; K. W. Wang
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Paper Abstract

In recent years, researchers have investigated the feasibility of utilizing piezoelectric-hydraulic pump based actuation systems for automotive transmission controls. This new concept could eventually reduce the complexity, weight, and fuel consumption of the current transmissions. In this research, we focus on how to utilize this new approach on the shift control of automatic transmissions (AT), which generally requires pressure profiling for friction elements during the operation. To illustrate the concept, we will consider the 1→ 2 up shift control using band brake friction elements. In order to perform the actuation force tracking for AT shift control, nonlinear force feedback control laws are designed based on the sliding mode theory for the given nonlinear system. This paper will describe the modeling of the band brake actuation system, the design of the nonlinear force feedback controller, and simulation and experimental results for demonstration of the new concept.

Paper Details

Date Published: 1 April 2008
PDF: 8 pages
Proc. SPIE 6930, Industrial and Commercial Applications of Smart Structures Technologies 2008, 69300A (1 April 2008); doi: 10.1117/12.774878
Show Author Affiliations
Gi-Woo Kim, The Pennsylvania State Univ. (United States)
K. W. Wang, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 6930:
Industrial and Commercial Applications of Smart Structures Technologies 2008
L. Porter Davis; Benjamin Kyle Henderson; M. Brett McMickell, Editor(s)

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