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The static response of microelectronic capacitive pressure sensors with a fine silicon rectangular membrane or square membrane is studied in the low distortion limit. The response represented by the variation of the capacity with the pressure, presents two parts: a nearly linear part corresponding to values of PN lower than 0,6 (unity) and second highly non linear part for PN higher than 0,6(unity)...
This paper presents a new Structured H∞ Design Method of proportional-integral (PI) controllers for Grid Feeding Connected Voltage Source Converters, based on MATLAB tools for tuning linear control systems in the frequency domain. The study consists in elaborating optimization of an H∞ robust control strategy for a Voltage Source Inverter (VSI) connected to the grid through a LCL filter. The PI controller...
This paper deals with identification of Wiener nonlinear systems. Such systems, consist of a linear dynamic block followed by a static non-linear subsystem. In this work, Polynomial Non Linear State Space(PNLSS) models are used to describe them. An output error identification method is performed, based on Levenberg-Marquardt algorithm; the parameters sensitivity functions are developed as a multivariable...
In this paper, the design of a perimeter security system based on fiber optic disturbance sensor with improved sensitivity was described. The system consisted of fiber optic disturbance sensor that was the Sagnac interferometer and a control computer. First, the light polarization and fiber birefringence effects on the sensor sensitivity improvement were studied. Then a modified digital Phase Generated...
Fractional systems are known to model complex dynamics with a reduced number of parameters. This paper deals with identification of discrete fractional order systems based on non-linear Hammerstein models. Such systems consist of a static non-linear block followed by a linear dynamic system. The polynomial non-linear state space equations (PNLSS) are used to represent the fractional Hammerstein system...
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