control of well drilling operations poses a challenging issue to be tackled. the loss of well control could lead to the occurrence of blowout as a severe threat, involving the risk of human lives and environmental and economic consequences. conventional proportional-integral (pi) controller is a common practice in the well control operation. the small existing margin between pore pressure and f...

In this paper, we consider a self-adaptive extrapolated Gauss-Seidel method for solving the Hermitian positive definite linear systems. Based on optimization models, self-adaptive optimal factor is given. Moreover, we prove the convergence of the self-adaptive extrapolated Gauss-Seidel method without any constraints on optimal factor. Finally, the numerical examples show that the self-adaptive ...

This paper presents an adaptive stochastic search algorithm for the optimization of functions of continuous variables where the only hypothesis is the pointwise computability of the function. The main design criterion of the proposed scheme consists of the adaptation of a search region by an affine transformation which takes into account the local knowledge derived from trial points generated w...

1474-0346/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.aei.2012.11.001 ⇑ Corresponding author. Tel.: +386 2 229 43 18. E-mail address: [email protected] (P. Podbr When monitoring events on a building site using a system of multiple cameras, it is necessary to establish correspondence between the acquired imaging material. The basic problem when attempting this task i...

This paper improved the selfadaptive filter-forecasting model that is one of deterministic constant parameter forecasting models. An attenuation/gain function is drawn into a direct iteration search method that belongs to the multi-variables extreme value research based on the optimization theory, so that it combines the quantitative methods with the qualitative analysis by the experts and incr...

Self-tuning adaptive control technique has the advantage of being able to track the system operating conditions so that satisfactory control action can always be produced. Self-tuning algorithms can be implemented easily. Because the power systems are usually time varying non-linear systems and their parameters vary, adaptive controllers are very suitable for power systems. Characteristics of a...