A Hybrid Real-Time Command Governor Supervisory Scheme for Constrained Control Systems

In this paper, we develop a hybrid supervisory control architecture in a real-time environment for constrained control systems. The strategy is based on Command Governor (CG) ideas that are here specialized to consider both time-varying set-points and constraints. The significance of the method mainly lies on its capability to avoid constraints violation and loss of stability regardless of any configuration change occurrence in the plant/constraint structure by replacing the current CG with a new on-line computed unit. A real-time scheme is an extremely appealing choice because of its numerous engineering applications: automobile industry, defense and aerospace, chemical and nuclear plant applications, multimedia/telecommunications, and so on. Experimental results on a laboratory four-tank test-bed and simulations on a Cessna 182 aircraft model show the effectiveness of the proposed strategy. © 1993-2012 IEE

A Hybrid Real-Time Command Governor Supervisory Scheme for Constrained Control Systems

In this paper, we develop a hybrid supervisory control architecture in a real-time environment for constrained control systems. The strategy is based on Command Governor (CG) ideas that are here specialized to consider both time-varying set-points and constraints. The significance of the method mainly lies on its capability to avoid constraints violation and loss of stability regardless of any configuration change occurrence in the plant/constraint structure by replacing the current CG with a new on-line computed unit. A real-time scheme is an extremely appealing choice because of its numerous engineering applications: automobile industry, defense and aerospace, chemical and nuclear plant applications, multimedia/telecommunications, and so on. Experimental results on a laboratory four-tank test-bed and simulations on a Cessna 182 aircraft model show the effectiveness of the proposed strategy. © 1993-2012 IEE

La diagnosi sierologica delle gastriti croniche atrofiche

The majority of atrophic chronic gastritis is related to the H. pylori infection. Opposite to a small group related with autoimmune diseases. Gastrointestinal endoscopy with biopsies is claimed to be the gold standard for the diagnosis of atrophic gastritis. The morphological abnormalities of gastric mucosa may be associated with changes of gastric secretion. A panel of four serological parameters: serum pepsinogens I and II gastrin-17 and anti-Helicobacter anti-body (GASTROPANEL) is described to be useful to single out gastric atrophic lesions. Additionally, GASTROPANEL can detect the topography of atrophic gastritis (in corpus, in antrum or in both) and the aetiology of atrophic damages. Considering unspecific symptoms on the one hand and the serious sequelae (gastric cancer, anemia, etc...) on the other one of atrophic gastritis, GASTROPANEL could represent a useful tool for the clinical management of patients with upper gastrointestinal symptoms and for selected people at high risk for gastric cancer