Coupled Dynamic Systems and Le Chatelier's Principle in Noise Control

摘要

Investigation of coupling an adjunct dynamic system to an externally driven dynamic system - a master dynamic system - reveals that the response of the adjunct dynamic system affects the pre-coupled response of the master dynamic system. The responses, in the two dynamic systems when coupled, are estimated by the stored energies and, respectively. Since the adjunct dynamic system, prior to coupling was with zero stored energy, the pre-coupled stored energy in the master dynamic system is expected to be reduced to when coupling is instituted; i.e., one expects. In this case a beneficial noise control of the master dynamic system would result from the coupling. It is argued that the change in the disposition of the stored energies as just described may not be the only change. The coupling may influence the external input power into the master dynamic system which may interfere with the expected noise control. Indeed, the coupling may influence the external input power such that the expected beneficial noise control may not materialize. An example of this kind of noise control reversal is cited.