Stochastic resonance in imperfect electromechanical systems

The behavior of complex electromechanical systems is strictly related to the mechanical vibrations to which they undergo. It is also well known that their performance are often positively improved by the imperfections linked to the technological construction process. Indeed this controversial aspect has been generalized in a wider class of systems that has been mentioned as imperfect systems. In this paper, we focus on the possibility of reviewing the imperfect system framework highlighting the connections with the stochastic resonance phenomenon. The performance of imperfect systems are evaluated in presence of intentionally induced noise, showing that a positive effects for enhancing the correct behavior of the system can be obtained by soliciting the dynamics connected to imperfections. The main objective that is discussed in this contribution is to formulate a connection between imperfect systems and stochastic resonance behavior of complex devices.