Helicopter multi-harmonic multi-channel global vibration active control method

A helicopter multi-harmonic multi-channel global vibration active control method comprises the following steps: constructing an independent band-pass tracking filter bank for separating each harmonic component in an acceleration response error signal at each to-be-controlled point of a helicopter body of a to-be-controlled helicopter, and independently controlling each harmonic component by selecting a convergence factor. In the control process, reference input signals are reconstructed, meanwhile, the weight of the Fx-LMS self-adaptive controller is updated with the minimum global vibration as a control target, acceleration responses of all measuring points of a fuselage are remarkably attenuated under helicopter rotor multi-harmonic interference, and the vibration level of the fuselage is effectively improved. According to the method, a plurality of independent adaptive filters are constructed to separate and independently control fundamental frequency and frequency multiplication components in vibration si