抄録
For the forced excitation of a large structure such as airplanes using one actuator, natural vibration mode cannot be excited because the vibration doesn't spread in the entire structure. On the other hand, when a lot of actuator is used, the excitation frequencies of the actuators must coincide and the magnitude and phase of the excitation force must be minutely adjusted for every vibration mode. Thus, we used a method for driving at resonance point by using the self-excited vibration generated by the local feedback control that an excitation point corresponds to a vibration detection point. The excitation target is a laminar structure modeled on an airplane. The sixth mode is excited by using sixteen voice coil motors with the local feedback controller. The self-excited vibration has a number of natural vibration modes when self-excited vibration is switched on by adding a wave signal within the local feedback controller. So a stable desired mode of vibration can be excited by adding cross feedback controller.
