Showing papers by "Francesco Amato published in 2002"
TL;DR: This paper deals with the design of closed loop strategies for a class of two player zero-sum linear quadratic differential games, where the state equation is affected by uncertainties in the so-called norm bounded, one-block form.
34 citations
TL;DR: In this paper, the state and output feedback problems for linear systems subject to time-varying norm-bounded uncertainties and to unknown disturbances are solved using statistical learning methods.
11 citations
10 Dec 2002
TL;DR: In this paper, the attitude control problem for the small launch vehicle VEGA is discussed, in particular a direct optimisation method is applied to the determination of the parameters of a prescribed mission trajectory, in order to compute a reference pitch attitude angle time history.
Abstract: In this paper the attitude control problem for the small launch vehicle VEGA is discussed. In particular, a direct optimisation method is applied to the determination of the parameters of a prescribed mission trajectory, in order to compute a reference pitch attitude angle time history. The attitude and engine-thrusters control system, which allows to track the obtained reference attitude, are designed by using a fuzzy logic approach. The effectiveness of the proposed method is illustrated via simulation performed into the MATLAB/spl trade//SIMULINK/spl trade/ environment.
6 citations
10 Dec 2002
TL;DR: In this article, a nonlinear observer based approach is proposed which makes use of the complete nonlinear model of the aircraft and guarantees disturbance decoupling, H-infinity performance, and an assigned rate of convergence for the estimation errors.
Abstract: In this paper we consider the problem of detecting and isolating sensor faults on a small commercial aircraft in the presence of external disturbances and uncertainties. A nonlinear observer based approach is proposed which makes use of the complete nonlinear model of the aircraft. This approach is based on the so-called unknown input observers (UIO) theory and guarantees disturbance decoupling, H-infinity performance, and an assigned rate of convergence for the estimation errors. A comparison between the application of the standard UIO based fault diagnosis and isolation (FDI) scheme, and the proposed nonlinear scheme shows the benefits of this technique. Some numerical simulations are carried out on the model of the small commercial aircraft under consideration in the Brite Euram ADFCS-III project.
5 citations
07 Aug 2002
TL;DR: Three different cost indices are defined: the first two indices look to the crane/aisle and shuttle areas as they were independent systems, while the third index measures the performance of the whole warehousing system.
Abstract: We consider a modern warehousing system composed of a number of aisles, each one is served by a crane and sided by a pair of racks, and a shuttle charging one unit load at a time moves along a mono-dimensional path placed orthogonally with respect to the aisles axis. Two control algorithms to optimize the operations of the cranes (moving within the aisles of the warehouse) and the operations of the shuttle (moving on a straight line placed between aisles and the picking/refilling area) respectively, are proposed. To evaluate the performance of the proposed control algorithms we define three different cost indices: the first two indices look to the crane/aisle and shuttle areas as they were independent systems, while the third index measures the performance of the whole warehousing system. Finally, extensive simulations are performed on the model developed by Basile at al. (2001) to show the effectiveness of the proposed control algorithms.
5 citations