Adaptive techniques applied to offshore dynamic positioning systems

Safety of dynamic positioning operations on mobile offshore drilling units

An overview of positioning and data fusion techniques applied to land vehicle navigation systems

In this paper, we will review the problem of estimating in real-time the position of a vehicle for use in land navigation systems. After describing the application context and giving a definition of the problem, we will look at the mathematical framework and technologies involved to design positioning systems. We will compare the performance of some of the most popular data fusion approaches an...

Passivity-based control applied to the dynamic positioning of ships

A family of passivity-based controllers for dynamic positioning of ships is presented. The authors exploit the idea of shaping the energy function of the closed-loop system to obtain different formulations of the passivity-based control law using the interconnection and damping assignment-passivity-based control (IDA-PBC) methodology. A salient feature of this study is that the proposed control...

Grassmann techniques applied to classical spin systems

We review problems involving the use of Grassmann techniques in the field of classical spin systems in two dimensions. These techniques are useful to perform exact correspondences between classical spin Hamiltonians and field-theory fermionic actions. This contributes to a better understanding of critical behavior of these models in term of non-quadratic effective actions which can been seen as...

Optimization Techniques Applied to Railway Systems

The problem that we study in this Master thesis is the energy minimization of railway systems, where the objective is to find the optimal speed profiles that minimize the consumption of a given journey. We first develop a model that takes into account all the constraints that the problem presents unlike in existing works. Given the difficulty of the problem an analytical solution is beyond our ...