M. N. Karsiti

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Electrical Capacitance Tomography (ECT) is an efficient and inexpensive type of Process Tomography, which is being widely used nowadays. It is a technique for obtaining information about the distribution of the contents of closed pipes or vessels by measuring variations in the dielectric properties of the material inside the vessel. An experimental study(More)
pH neutralization process plants are widely used particularly in the wastewater treatment and process industries such as biotechnology, chemical processing and pharmaceuticals. The control of pH neutralization is recognized as a difficult problem due to the highly nonlinear characteristics of the process. The need to regulate the pH value within a specific(More)
Among electrical tomography techniques, electrical capacitance tomography (ECT) has been the subject of extensive recent research due to its non intrusive and non-invasive nature. It is used for obtaining information about the distribution of the contents of closed pipes or vessels by measuring variations in the dielectric properties of the material inside(More)
This paper presents a hybrid numerical solution of field governing equations of electromagnetic (EM) geophysical method. The proposed method take advantage of implementation simplicity of finite difference (FD) method and the advantage of multiscale resolution of wavelet transform. For evaluation of the proposed method, 2D hypothetical geoelectrical(More)
pH neutralization process is considered as a difficult control problem, because of its high nonlinearity dynamics, time-varying properties and its sensitivity to changes around the neutralization point. Therefore, there is a need to design a robust control algorithm to handle this problem. In this paper a preliminary investigation into application of(More)
Survey data of marine controlled source electromagnetic (CSEM) geophysical surveys is not able to proceed far without numerical modeling. Finite Difference (FD) and Finite element (FE) numerical methods are the most used techniques in geophysical modeling. These methods are reliable for complex structural media; however the computational cost is very high.(More)
The main elements of hydrocarbon saturated reservoirs are identified by using various geological survey techniques. For many years, marine Controlled Source Electromagnetic (CSEM) method is effectively being used for detection and observation of hydrocarbon reserves, either in shallow or deep water exploration. In this paper, 2D forward modeling is used to(More)
The analysis and design of observer-based nonlinear control of depth positioning of a spherical underwater robotic vehicle (URV) is investigated. The observer is required for estimating accurately the unknown state variables in the full-state feedback control laws developed, whereby these control laws can be implemented with the unknown states replaced by(More)
A marine electromagnetic survey is an engineering endeavour to discover the location and dimension of a hydrocarbon layer under an ocean floor. In this kind of survey, an array of electric and magnetic receivers are located on the sea floor and record the scattered, refracted and reflected electromagnetic wave, which has been transmitted by an electric(More)