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Advanced Modeling Environment for performing Simulations of engineering systems (AMESim) is a multi-domain software that allows interconnection between different type of physical systems. It also allows to reproduce their dynamic behaviors under various scenarios and to analyze their operation. In this paper, AMESim software is introduced in order to validate the developed control laws. In fact, an...
In this paper, we propose an unknown input estimation based sliding mode control (UIESMC) approach for air path in the EGR-VGT diesel engine. This proposed UIESMC controller is adopted to track the intake and exhaust manifold pressures, and compressor mass flow rate when under unknown inputs, which include the un-modeled dynamics, modeled parametric uncertainties and the unknown faults. These unknown...
In this paper we develop a nonlinear controller based on sum of squares decomposition applied to turbocharged biodiesel engine. The basic idea is to employ polynomial Lyapunov function in order to formulate the stability sufficient conditions in the terms of state dependent matrix inequalities. The obtained controller gain regulates the flows for the Variable Geometry Turbocharger and the Exhaust...
In this paper, we propose a new way to apply a Sum-Of-Squares technic for parameters calculation of Control Lyapunov function to achieve stabilization and optimal control. It permits to develop an optimization algorithm in order to improve the nonlinear optimal robust controller applied to diesel engine which is equipped by Exhaust Gas Recirculation and Variable Geometry Turbocharger. The idea is...
The problem of fault detection for diesel engines is addressed in this work. The proposed approach allows to detect and estimate actuator and sensor faults. The residual design procedure is proposed for nonlinear parameter-varying systems. Inspired by some works in literature, the maximization problem of fault effect and the minimization problem of disturbances effect on the residuals is transformed...
In this paper we propose a nonlinear controller based on sum of squares decomposition applied to turbocharged diesel engine. The basic idea is to employ polynomial Lyapunov function in order to formulate the stability sufficient condition in the terms of state dependent matrix inequalities. The obtained controller gain guarantees the global convergence of the system and regulates the flows for the...
This work deals with the problem of observer-based controller for diesel engines. The control objective is to regulate the intake and exhaust manifold pressures and the compressor power in a four-cylinder diesel engine in order to obtain low emissions and low fuel consumption. The considered mean value model of the air path system is rewritten as a nonlinear system with varying parameters. The proposed...
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