In [5] and [7] adaptation algorithms taking in account the ”positive” feedback coupling arising in most of the active noise and vibration control systems have been proposed and analyzed. The stability of the system requires satisfaction of a positive real condition through an appropriate filtering of the regressor vector. It is shown in this note that the presence in addition of a feedback cont...

In the paper, the influence of harmonic was taken into consideration during the realization of the AVC system in the power grid of Wuhu region, relevant study and development were conducted from the perspective of application and practice, and concrete proposal of practicable reactive voltage power optimization was put forward. The system adopted two-layer control plan: whole-network coordinati...

conclusions in conclusion, the study findings revealed that pediatric h. pylori infection is associated with recurrent abdominal pain, anorexia and recurrent vomiting, also adversely affects the growth of children in various modalities; in particular weight, height and progressive incidence of sideropenic anemia. background helicobacter pylori (h. pylori) is one of the most common chronic bacte...

in order to reduce herbicide utilization, a 3-year field experiment was carried out with integration of mechanical and chemical weed control methods; in mechanical method, three types of blades (curred- bed knife, square- turn knife and sweep) were used. chemical control was done with chloridazon (wp 80%) and desmedipham (ec 15.7%) in two spraying sheme: once band sparying with 2 l h-1 & twice ...

In this paper H and H control techniques are applied to the real2 ∞ time control of a gyroscope with two degrees of freedom. The controllers are designed based on a polynomial approach and using routines from the Polynomial Toolbox for MATLAB. Real-time results are presented, showing a good performance of the controllers.