Patent ID: 8233644

Claim:
A fan control system, comprising: a controller that is coupled to a plurality of fan couplers; and a computer-readable medium coupled to the controller, the computer-readable medium comprising a first fan identification corresponding to a first fan, a second fan identification corresponding to a second fan, and at least one fan property associated with each of the first fan identification and the second fan identification; wherein the controller is operable to monitor at least one operating parameter of each of the first fan and the second fan when the first fan and the second fan are coupled to a respective fan coupler, and wherein the controller is further operable to use the at least one fan property associated with each of the first fan identification and the second fan identification and the at least one operating parameter of each of the first fan and the second fan in order to calculate a blade frequency for each of the first fan and the second fan, and wherein the controller is operable to increase the speed of the second fan relative to the speed of the first fan if the calculated blade frequency of the second fan is within a predetermined frequency difference of the calculated blade frequency of the first fan.