Learn More
A technique is presented for filtering and normalizing noisy fringe patterns, which may include closed fringes, so that single-frame demodulation schemes may be successfully applied. It is based on the construction of an adaptive filter as a linear combination of the responses of a set of isotropic bandpass filters. The space-varying coefficients are(More)
In this paper, we study the problem of flight formation control and trajectory tracking control for a group of mini rotorcraft. The goal is to achieve and maintain a stable formation for multiple mini rotorcraft while guaranteeing the tracking of a desired time-varying reference. A two-level controller is developed where a individual control strategy(More)
— In this paper, the impact of the medium access protocols on the average consensus problem over wireless networks for a group of quadrotors is established. The stabilization of each helicopter is guaranteed using a simple and bounded nonlinear control strategy. We study the case of a group of quadrotors communicating over a wireless network considering(More)
— In this paper, the impact of the medium access protocols on the average consensus problem over wireless networks for a group of quadrotors is established. We study the case of a group of quadrotors communicating over a wireless network considering both directed and undirected graphs of information flow. It turns out that the media access control (MAC)(More)
– In this work we analize the controllability and observability properties of several interconnection configurations such as the chain topology and ring topology as well as combinations of these two topologies. A leader/follower control strategy is proposed to control the center of mass of the multiple agent system. It is shown that the trajectory tracking(More)
— This paper presents new results to verify the robust absolute stability property of the Lur'e systems. As it is known, to solve the problem of robust absolute stability, the strict positive realness property (SPR) of a …ctitious transfer function needs to be veri…ed. In the present work, a …ctitious transfer function with poly-nomic parametric uncertainty(More)
  • 1