Affiliations: State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an, Shaanxi, China
Correspondence:
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Corresponding author: Minglong Xu, State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an 710049, Shaanxi, China. Tel./Fax: +86 29 82669093; E-mail:mlxu@xjtu.edu.cn
Abstract: Panel reflection antenna in large diameter is a typical
cantilever structure and has the quality of low-stiffness, weak-damping and
flexible-significantly. Large amplitude and enduring vibration will occur
when satellite adjusts posture due to frequency coupling, which will greatly
affect pointing accuracy of the antenna. In this paper, four Macro Fiber
Composite (MFC) patches are applied as sensors and actuators to control the
coupling vibration of the antenna. PD and fuzzy control algorithms are
utilized to build the closed-loop feedback control system. Active vibration
control of the first two vibration modes in both free attenuation vibration
situation and steady excitation vibration situation are implemented. The
experiment results suggest that using MFC sensors and actuators in active
vibration control of the antenna is effective.
Keywords: Active vibration control, panel reflection antenna, MFC sensors and actuators
