Now showing items 1-10 of 23
Semi-active friction tendons for vibration control of space structures
Semi-active vibration control systems are becoming popular because they offer both the reliability of passive systems and the versatility of active control without high power demands. In this work, a new semi-active control ...
Analytical, numerical and experimental studies on the Semi-Active Friction Tendon
For controlling vibrations, a Semi-Active Friction Tendon (SAFT), which consists of a semi-active friction damper and an auxiliary spring that are linked to the structure by a cable, is studied experimentally, numerically ...
Control of relative vibration between flexible appendages using passive and semi-active isolation
Relative vibration between two flexible subsystems can be detrimental to the performance of many engineering applications, such as optics-based instruments, machine tools, or adjacent industrial structures sharing piping. ...
Suppression of vibrations in a nonlinear half-car model using a magneto-rheological damper
The present work investigates the nonlinear response of a half-car model. The disturbances of the road are assumed to be sinusoidal. After constructing the bifurcation diagram, we use the 0-1 test to identify chaotic ...
Output control of continuous-time uncertain switched linear systems via switched static output feedback
This paper is devoted to the robust (Formula presented.) and guaranteed cost control problems for continuous-time switched linear systems with polytopic uncertainties, considering an output-dependent switching law and a ...
Controle social no Programa Nacional de Alimentação Escolar: desafios da democratização
(Universidade Federal de São Paulo (UNIFESP), 2011-11-24)
O presente estudo tem como objetivo caracterizar o controle social no Programa Nacional de Alimentação Escolar – PNAE, exercido pelo Conselho de Alimentação Escolar - CAE, na perspectiva da cidadania ativa. Controle social ...