A novel application of a second-order sliding mode control (SMC) scheme to the air-fuel ratio (AFR) control of automobile internal combustion engines is developed in this paper. In this scheme, the sliding surface is steered to zero in finite time by using the discontinuous first-order derivative of a control variable , and the corresponding actual control variable turns out to be continuous, which significantly reduces the undesired chattering. Its sliding gain is adjusted by a novel radial basis function network based adaptation method derived using the Lyapunov theory. It not only avoids handling the unavailable parameters and variables, but also saves the unnecessary manual adjusting time of the second-order SMC. The proposed method is applied to a widely used engine benchmark, the mean value engine model for evaluation. The simulation results show substantially improved AFR control performance compared with the conventional SMC.
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November 2007
Technical Papers
A New Development of Internal Combustion Engine Air-Fuel Ratio Control With Second-Order Sliding Mode
Shiwei Wang,
Shiwei Wang
Control Systems Research Group, School of Engineering,
Liverpool John Moores University
, Byrom Street, Liverpool L3 3AF, UK
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D. L. Yu
D. L. Yu
Control Systems Research Group, School of Engineering,
e-mail: d.yu@ljmu.ac.uk
Liverpool John Moores University
, Byrom Street, Liverpool L3 3AF, UK
Search for other works by this author on:
Shiwei Wang
Control Systems Research Group, School of Engineering,
Liverpool John Moores University
, Byrom Street, Liverpool L3 3AF, UK
D. L. Yu
Control Systems Research Group, School of Engineering,
Liverpool John Moores University
, Byrom Street, Liverpool L3 3AF, UKe-mail: d.yu@ljmu.ac.uk
J. Dyn. Sys., Meas., Control. Nov 2007, 129(6): 757-766 (10 pages)
Published Online: March 7, 2007
Article history
Received:
March 8, 2006
Revised:
March 7, 2007
Citation
Wang, S., and Yu, D. L. (March 7, 2007). "A New Development of Internal Combustion Engine Air-Fuel Ratio Control With Second-Order Sliding Mode." ASME. J. Dyn. Sys., Meas., Control. November 2007; 129(6): 757–766. https://doi.org/10.1115/1.2789466
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