The low frequency vibration control of the hoop truss structure with extended arm

Abstract

The hoop truss structure with extended arm has large diameter and great flexibility. These two characteristics cause low frequency and affect the technical requirements of modern satellite system. This article investigates the active vibration control of the hoop truss structure with extended arm. At first, proportional plus derivative algorithm and least mean square adaptive filtering algorithm are applied to derive the vibration control equation. Then, based on the first two modes calculated by finite elements method, the positions of the actuators are optimized. Finally, the excitation simulation and the closed-loop control simulation for suppressing the low frequency vibration are established. The simulation result illustrates that the amplitudes of the responses are decreased significantly under the steady state excitation after adopting the intelligent control algorithm.