A method/system for controlling helicopter vibrations is provided that
includes a vibration canceling force generator for actively generating a
vibration canceling force. The system includes a resonant actuator having
a natural resonant frequency and a resonant actuator electronic control
system. The resonant actuator electronic control system provides an
electrical drive current to the resonant actuator to drive the resonant
actuator about the resonant frequency when commanded by a received
command signal. The resonant actuator has a feedback output with the
feedback output fed back into the resonant actuator electronic control
system wherein the resonant actuator electronic control system adjusts
the electrical drive current based on the resonant actuator feedback
output to generate the vibration canceling force.