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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...
This paper describes the results of an application of a PDC type T-S fuzzy control to synchronous machine. The non linear mathematical model for the proposed synchronous machine adopted in this work is described by T-S continuous fuzzy models. Next, the control law for T-S fuzzy control based on PDC design is studied. The stability and the stabilisation of the whole closed-loop model are investigated...
A novel T-S fuzzy control algorithm is presented for active queue management(AQM) in order to solve the problem of congestion control in TCP communication. This kind of control action has robust performance, which is suitable for time varying and complex network systems. For the particular TCP network mode, a T-S fuzzy model is done for the nonlinear TCP/IP network congestion control system. The performance...
We propose an underactuated mechanical system named inverted pendulum on a cart beam system. The proposed system has three degrees-of-freedom and one control input. The mathematical model is derived using Lagrangian method and the stabilization is achieved with constraints using a linear controller designed based on linear matrix inequality approach. Simulation results are presented to validate the...
The issue of stability analysis for nonlinear MIMO networked control systems (NCSs) is researched, where its network transmission is connected with network-induced delay and packet dropout. The effect of network-induced delay to the stability of nonlinear networked control system s is considered. Asymptotical stability under a multiple-packet transmission policy is analyzed and the maximum allowable...
This paper is an attempt to pursue the relaxed stabilization conditions for discrete-time Takagi-Sugeno (T-S) fuzzy systems. The main results given here concern their stabilization using extended non-quadratic Lyapunov functions, a non-parallel distributed compensations (non-PDC). New sufficient conditions in the terms of linear matrix inequalities (LMIs) have been proposed. The conditions are shown...
The Hinfin state feedback control for the stabilization of the three Euler angles of helicopter is studied. The little perturbation model of helicopter is introduced. The proper generalized control variables are chosen and the generalized control object is established. The Hinfin state feedback algorithm is developed based on the Iterative Linear Matrix Inequality (LMI) approach and the digital simulation...
This paper deals with a discrete-time piecewise affine (PWA) systems with time-delay. The PWA systems is described as ellipsoid which can be characterized by a set of vector inequalities, thereby the constraint of linear matrix inequalities (LMIs) is released. In terms of LMIs, the time-delay PWA system can be stabilized in Lyapunov theory. A convex optimization problem with LMIs constraints is formulated...
Based on the non-linear characteristic of BUCK-BOOST converter, combining with the fine part-linear characteristic of T-S fuzzy model, this paper constructs the T-S fuzzy model of the BUCK-BOOST converter under the kind of pattern which is DCM. Adopting PDC control scheme, it designs the BUCK-BOOST converterpsilas controller via CQLF method and obtains the controller parameters by using LMI method...
The feedback control problem for the parabolic distributed parameter systems without or with time-delay are investigated. The system model contains convection terms. Firstly, the feedback control law is designed for a class of the parabolic distributed parameter systems without time delay. Then this result is extended to the case with time delay and the feedback control law is designed for a class...
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