Sliding mode control for Turbocharged Diesel Engine

In this work, fuzzy second-order sliding mode control (2-SMC) and adaptive sliding mode control (ASMC) are developed for a turbocharged diesel engine (TDE). In control design, the TDE is represented by multi-output multi-input (MIMO) nonlinear model with partially unknown dynamics. To regulate the intake manifold pressure, the exhaust manifold pressure, the compressor flow, and to estimate the unknown functions, a sliding mode control (SMC) combined with fuzzy logic is first developed. Second to reduce the chattering phenomenon without deteriorating the tracking performance, two approaches are investigated. A special case of the 2-SMC: the super-twisting SMC is developed. The results obtained using the ASMC are also presented to compare the performances of both methods. All parameter adaptive laws and robustifying control terms are derived based on Lyapunov stability analysis, so that convergence to zero of tracking errors and boundedness of all signals in the closed-loop system are guaranteed. Simulation results are given to show the efficiency of the proposed approaches.

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A robust sliding mode control strategy for turbocharged diesel engine air path

IFAC Proceedings Volumes ◽

10.3182/20120912-3-bg-2031.00054 ◽

2012 ◽

Vol 45 (24) ◽

pp. 262-267

Author(s):

Ahmed Ali Sofiane ◽

Langlois Nicolas

Keyword(s):

Diesel Engine ◽

Sliding Mode Control ◽

Control Strategy ◽

Sliding Mode ◽

Turbocharged Diesel Engine ◽

Mode Control

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Nonlinear observer based sliding mode control and oxygen fraction estimation for diesel engine

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331217700242 ◽

2017 ◽

Vol 40 (7) ◽

pp. 2227-2239 ◽

Cited By ~ 1

Author(s):

Haoping Wang ◽

Qiankun Qu ◽

Yang Tian

Keyword(s):

Diesel Engine ◽

Sliding Mode Control ◽

Oxygen Concentration ◽

Control Method ◽

Sliding Mode ◽

Observer Design ◽

Nonlinear Observer ◽

Linear Matrix ◽

Model Based ◽

Mode Control

In this paper, a nonlinear observer based sliding mode control (NOSMC) approach for air-path and a model-based observer for oxygen concentration in the diesel engine equipped with a variable geometry turbocharger and exhaust gas recirculation is introduced. We propose a less conservative observer design technique for Lipschitz nonlinear systems using Ricatti equations. The observer gains are obtained by solving the linear matrix inequality (LMI). Then a robust nonlinear control method, sliding mode control is applied for the states of intake and exhaust manifold pressure and compressor mass flow rate for the sake of the minimization of emissions. The proposed NOSMC controller is applied on a mean value model of turbocharged diesel engine. Besides this, a model-based observer is developed to estimate the oxygen concentration in the intake and exhaust manifolds owing to its significance in reducing emissions of diesel engines. The validation and efficiency of the proposed method are demonstrated by AMESim and Matlab/Simulink co-simulation results.

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