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Flexible AC Transmission Systems (FACTS) devices have been used in power systems since the 1970s for the improvement of its dynamic performance. This paper presents a review on the research and developments in the voltage stability improvement by using FACTS controllers. In this paper several technical issues related to FACTS installations have been highlighted and performance comparison of different...
Many applications require the interpretation of the Euclidean coordinates of features of a 3D object through 2D images. In this paper, the range and the Euclidean coordinates of an object undergoing general affine motion are determined, via a nonlinear observer, for a physically realizable paracatadioptric imaging system. The nonlinear estimator asymptotically determines the range information provided...
The singularities in visual servo control associated with the image Jacobian and the error system containing trigonometric terms make the controller fail in some particular configurations. Many applications may be restricted by these singularities. In this paper, a quaternion parameterization is used to formulate the visual servo tracking control problem to eliminate the singularities. As in the previous...
Previous homography-based visual servo controllers have been developed using an error system that contains a singularity resulting from the representation of the rotation matrix. For some aerospace applications such as visual servo control of satellites or air vehicles, the singularity introduced by the rotation representation may be restrictive. To eliminate this singularity, a homography-based visual...
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