Research on Dynamic Vibration Absorption of Helicopter Mast Electronic Equipment

In this paper, the vibration control for low-frequency vibration of equipment mounted on helicopter mast is studied based on DVA (dynamic vibration absorption) technology. A cantilever beam-type vibration absorber is designed and optimized by finite element method, and its vibration absorption performance is verified by simulation. Based on this, the DVA prototype is produced and installed on the antenna servo feed system for experimental verification. The experimental results indicate that the vibration level of the antenna servo feed system under the main frequency of the propeller is significantly reduced, demonstrating the effectiveness of the vibration absorption design. The study provides a new approach for the vibration control of equipment mounted on helicopter mast.