Journal of Sound and Vibration http://www.scivee.tv/node/10516 en Optimal periodic disturbance reduction for active noise cancelation http://www.scivee.tv/node/10517 <p>The design of an optimal internal model-based (IMB) controller by extending standard discrete time optimal control theory for IMB controllers is described. The optimal observer and state feedback gains of the IMB controller are given via the solution of discrete time algebraic Riccati equations. The design method is applied to an acoustic system that is subjected to disturbances from a server fan. Periodic disturbances from the server fan appear as harmonics of the fundamental frequency of the fan.</p> <div class="og_rss_groups"><ul class="links"><li class="first last og_links"><a href="/node/10516" class="og_links">Journal of Sound and Vibration</a></li> </ul></div><p><a href="http://www.scivee.tv/node/10517">read more</a></p> acoustic system discrete time fan frequency fan noise feedbck controller harmonics internal model principle noise cancelation parametric model periodic disturbance Journal of Sound and Vibration Mon, 23 Mar 2009 17:49:25 -0700 callafon 10517 at http://www.scivee.tv