Active Control of Helicopter Ground Resonance with Lead-Lag Actuators
Yıl 2018,
Cilt: 2 Sayı: 3, 83 - 87, 27.09.2018
İlkay Kurt
Öz
The coupling between the low frequency
lead-lag motion of rotor blade and the frequency of fuselage is the phenomenon
of ground resonance. This mechanical instability can lead to the total
destruction of the aircraft if the vibrations are not reduced in time.
Differential equations of motion of the simple ground resonance model are
derived by using the Lagrange method. Five degrees of freedom coupled rotor/fuselage
model with lead-lag actuators in the root of each blade is simulated. Fuzzy
Logic Controller is used for the purpose of suppressing the ground resonance.
The results show that existence of the active lead-lag control system prevents the
ground resonance from happening while the helicopter is in touch with the
ground.
Kaynakça
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