Adaptive compensation of discrete noise and vibration components

A multichannel adaptive system for compensation of discrete noise and vibration components excited in a structure or a medium by several periodic mechanisms (e.g., engines, diesels, or turbogenerators) is examined. An iterative algorithm with the highest possible response speed and practically independent of the spatial dimensions of the system and of the number of discrete components is developed to control the system. Experimental results are presented, and it is shown that, in actual operating conditions, the compensation value is 20-25 dB for all discrete components simultaneously.