In the last years automotive industry has shown a growing interest in exploring the field of actively controlled differentials due to the promising expectations of their application for the improvement of handling performances. The differential here considered has two clutches, which connect each driveshaft with a second part that, through a gear, always rotates faster. This device allows the control system to transfer torque from one wheel to the other one, almost independently from their relative velocity. The results of this preliminary modeling phase are shown in the first part of the paper. The control algorithms development has been carried out using a vehicle model that can precisely simulate the handling response, the powertrain dynamics and the actuation system behavior. To obtain a representative powertrain response, the development of a customized library in Simulink has been required. Applying a methodology commonly shared among car manufacturers, for this research a two-steps approach has been adopted: firstly an intensive simulation campaign has been executed to design and tune the controller in the virtual environment; secondly the logic has been tested using HIL techniques. The second part of the paper introduces the general structure of control system developed and its main algorithms. Vehicle performance improvements, evaluated through simulation and HIL tests, are underlined.
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ASME 8th Biennial Conference on Engineering Systems Design and Analysis
July 4–7, 2006
Torino, Italy
ISBN:
0-7918-4249-5
PROCEEDINGS PAPER
Vehicle Dynamics Control System Actuating an Active Differential Available to Purchase
Federico Cheli,
Federico Cheli
Politecnico di Milano, Milano, Italy
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Marco Pedrinelli,
Marco Pedrinelli
Politecnico di Milano, Milano, Italy
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Sebastiano Campo,
Sebastiano Campo
Fiat Auto S.p.A., Torino, Italy
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Andrea Fortina,
Andrea Fortina
Fiat Auto S.p.A., Torino, Italy
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Paolo Martella
Paolo Martella
Fiat Auto S.p.A., Torino, Italy
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Federico Cheli
Politecnico di Milano, Milano, Italy
Marco Pedrinelli
Politecnico di Milano, Milano, Italy
Sebastiano Campo
Fiat Auto S.p.A., Torino, Italy
Andrea Fortina
Fiat Auto S.p.A., Torino, Italy
Paolo Martella
Fiat Auto S.p.A., Torino, Italy
Paper No:
ESDA2006-95517, pp. 251-260; 10 pages
Published Online:
September 5, 2008
Citation
Cheli, F, Pedrinelli, M, Campo, S, Fortina, A, & Martella, P. "Vehicle Dynamics Control System Actuating an Active Differential." Proceedings of the ASME 8th Biennial Conference on Engineering Systems Design and Analysis. Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology. Torino, Italy. July 4–7, 2006. pp. 251-260. ASME. https://doi.org/10.1115/ESDA2006-95517
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