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In this paper a controller and an management of production systems focusing on energy from renewable sources is presented. The main result is optimize the energy extracted from renewable sources to and effectively control the charging and discharging of the battery. An algorithm based on fuzzy logic is developed to determine the degree of involvement of each source. Then we develop the controls in...
Knowledge of the torque and the tire forces at each wheel is an important intermediate variable for system design of advanced driver assistance. This paper describes how it is possible to estimate online the torque and the longitudinal force of the vehicle wheel. We use a simplified model to synthesize the non-linear high-gain observer. The observer is validated on a comprehensive model of the vehicle...
In this paper, the moment robust active control of vehicle lateral dynamics is studied when the road adhesion conditions change and the sideslip angle is unavailable for measurement. Based on Takagi-Sugeno (T-S) representation a robust T-S controller based observer is designed in terms of Linear Matrix Inequality (LMI) problem which can be solved very efficiently using the convex optimization techniques...
In this paper, the robust static output feedback control for Four Wheels steering (4WS) vehicle dynamics is studied via an uncertain multiple model when the road adhesion conditions. First, a nonlinear model of cornering forces based on multiple model approach is developed and used to represent nonlinear lateral dynamic of the vehicle. Next, based on the uncertain multiple model of the 4WS Vehicle...
This paper describes a method of fault-tolerant control schema for vehicle lateral dynamics. Firstly, the given nonlinear model of the vehicle is represented by an uncertain Takagi-Sugeno fuzzy model. Using the LMI formulation, the T-S fuzzy model scheme is used to design an output feedback observer-based controller, a method is then investigated for detection, isolation and accommodation of sensor...
In this paper, we propose an Hoc robust observer-based control to prevent rollover of the vehicle when road adhesion and other conditions change. In this work, we take into account that roll rate and yaw rate can be measured easily by sensors, but roll angle and lateral velocity are not measured. After giving the nonlinear model of the vehicle, its representation by a Takagi-Sugeno (T-S) fuzzy model...
This paper deals with the optimization and control of DC motor based on photovoltaic pumping system. We will use in this work the tools of nonlinear control to increase the yield of a photovoltaic panel and therefore the amount of water pumped. Maximum point tracking algorithm using Perturb and Observe method with array voltage and current is used to generate the voltage reference which should be...
In this paper an estimation scheme is used to built using a robust differentiator and sliding modes. This allows us to identify the tire road friction. The estimations are produced in three cascaded steps of observers and estimators. The first produces estimations of velocities and accelerations. The second estimate the tire forces and the last reconstruct the friction coefficient. The application...
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