Patent ID: 8360728

Claim:
A method of balancing an aircraft propeller system comprising: receiving a vibration signal from the aircraft propeller system; determining whether the vibration signal represents a transient vibration condition, wherein said determining whether the vibration signal represents a transient condition includes: creating a band-passed filtered vibration signal from the vibration signal; low-pass filtering the vibration signal based on a cutoff frequency to create a low-passed filtered vibration signal, wherein the vibration signal is first subjected to the step of band-pass filtering prior to the step of low-pass filtering; calculating a difference of the band-passed filtered vibration signal and the low- passed filtered vibration signal; comparing the difference with a predetermined threshold; defining a threshold count having a minimum value, the minimum value being a minimum number of consecutive samples for which the predetermined threshold must be met to enable the balance correction controller; enabling a balance correction controller if it is determined that the vibration signal does not represent a transient vibration condition; generating a balance correction signal at the balance correction controller based on the vibration signal; and balancing the aircraft propeller system in response to the balance correction signal.