Actual Engaged Gear Identification: A Hybrid Observer Approach
| Authors: | Andrea Balluchi, PARADES, Italy
Benvenuti Luca, DIS, Università di Roma, Italy
Lemma Claudio, PARADES, Italy
Sangiovanni-Vincentelli Alberto, PARADES and EECS Dept. University of California at Berkeley, United States
Serra Gabriele, Magneti Marelli Powertrain, Italy |
|---|
| Topic: | 7.1 Automotive Control |
|---|
| Session: | Powertrain Control |
|---|
| Keywords: | automotive control, discrete event dynamic systems, observers, system state estimation, traction control. |
|---|
Abstract
The knowledge of the actual engaged gear is essential to achieve high-quality control of an automotive power train. In cars equipped with manual gear shift, this information is not directly available. A hybrid observer for on--line identification of the actual engaged gear is proposed. Two hybrid models of an automotive driveline, a detailed one for verification and a reduced-order one for synthesis, have been developed. The identification algorithm is based on a novel approach to observer design for hybrid systems. The algorithm was tested on experimental data obtained at Magneti Marelli Powertrain on an Opel Astra equipped with a Diesel engine and a robotized gearbox and yielded excellent results.
