system of ricampionamento of synchronicity engine for the active control of periodic vibration

摘要

electronic system for active control of vibrations produced by a motor (7) in which an electronic unit (3) receives input signals (i) reaction detected by microphones and generates outgoingcommand signals for a plurality of speakers (lj).each speaker (lj) produces an anti vibration, which added to the primary vibration (n (t)) generated by the engine (7) receives the elisione, at least partially,the primary vibration in a confined space (5).the electronic unit (3) and an analog-to-digital converter circuit (14) which samples the signals of reaction with period of sampling (ts) constant by generating a plurality of data(i) championships.the output of the analog-to-digital converter (14) communicated with a circuit of ricampionamento (15) act to increase the data state championships () with parameters related to the speed of rotation of theengine (7) [figure 1].