Search results for "Control function"
showing 3 items of 3 documents
Robust current observer design for DC-DC converters
2014
In recent years several fast response controllers have been proposed for DC-DC converters. The majority of them rely on a cascade control structure involving the inductor's current in the control function as its faster dynamics, respect to output voltage, allows a significant increase in the regulation performance; the drawback is the need of a proper and expensive current sensor. In this paper a simple and robust formulation for the design of a current observer, based on the output voltage measurement is presented. The formulation is common for the three standard DC-DC converters and the resulting observer is robust to load variation. The observers have been tested in a cascade PI control …
Amministrazione performante e sistema dei controlli interni
2023
Since the origins of post-unitary reform processes, analyses, and reconstructions aimed at deepening the needs and development paths for maximizing the functioning of the italian administration have directly or indirectly included the legal institutions of administrative control. Controls have progressively become an essential thematic axis in the characterization of the fundamental contents of the formation of the administrative state and the 'administrative question' of conformity in public organization and administrative activity to the principle of legality. They are seen as a specific legal institution, in which it is possible to interpret both the evolution of the state organization a…
Relaxation of a weakly discontinuous functional depending on one control function
2008
The paper considers an optimal control problem of the typewhere the set M of admissible controls consists of all measurable vector‐functions h, which can take only two values h1 or h2. It is shown that the relaxation of this problem can be explicitly computed by rank‐one laminates.