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Dual Mode Control of an Automotive Clutch-By-Wire System
Technical Paper
2013-01-0484
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Dry Clutch is one of the main components of both conventional and advanced automotive powertrain systems. Dry Clutch Control has a key role in ride comfort during standing-start and gear-shifting maneuvers. Vehicle shift performance and powertrain torque interruption are of key interest to the control problem. A faster shift time results in a more responsive vehicle but at the same time induces high level of powertrain torque interruption and vise versa. This is due to the high nonlinear behavior of the slip dependent friction torque of the vehicle's dry clutch. In this paper a dual mode control strategy for the dry clutch-by-wire system is proposed. The nonlinear behavior of the clutch friction torque is classified into two regions, a nonlinear region at a low level of clutch slip and a linear region at a high level of clutch slip. The presented control strategy switches between adaptive proportional control in the linear region and sliding mode control in the nonlinear one. The sliding mode control is chosen due to its high level of robustness against system nonlinearity. The proposed control strategy is tested using a highly realistic powertrain model. The simulation results show that the proposed control strategy increases ride comfort by decreasing the powertrain torque interruption that results in that fore-and-aft (jerking) motion which is annoying to vehicle drivers and at the same time ensures acceptable vehicle performance.
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Citation
Haggag, S. and Ibrahim, F., "Dual Mode Control of an Automotive Clutch-By-Wire System," SAE Technical Paper 2013-01-0484, 2013, https://doi.org/10.4271/2013-01-0484.Also In
References
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