抄録
This paper presents analytical and experimental dynamic deformation results of a flexible cantilever that is a main structural element of a space antenna. Piezoceramic actuators and piezoelectric polymer sensors are bonded on the almost whole upper and lower sides of the cantilever for shape and vibration control. The beams correct the surface error of the antenna reflector and suppress vibrations caused by disturbance. Two control systems are studied : (1) a velocity feedback control system to create damping force on the beam, and (2) a positioning control system for shape control. The calculated results, which are in good agreement with the experimental results, show that the beam changes shape as desired without transient vibrations and that these control systems are sufficiently robust against disturbance.
