Implementation of a PID controller in ANSYS© for noise reduction applications

The present work addresses vibration and noise reduction, using the capabilities of the commercial software program ANSYS (c) to implement a PID controller. Different possibilities regarding control law implementation are available. However, due to different reasons either additional tools have to be used or the preexisting software tools limit the type of analyses that can be conducted. Additionally, the kind of systems it allows to implement are usually simple (e.g. without frequency dependent properties). In this work we propose a general algorithm to implement PID controllers in ANSYS (c) that needs only the implementation of a non-linear system of equations algorithm (for instance, Newton-Raphson algorithm). The method is illustrated by computing the sound radiation characteristics of different panels using their radiated sound power, through the Rayleigh integral method. Besides presenting the proposed approach and analyzing its results, some preliminary analysis are also presented in order to analyze the problems associated to the most direct ANSYS (c) implementation.