The active vibration damping of space structures is investigated. For this purpose, a solar array panel and an optical instrument are used as example structures. A piezoelectric model is developed from measurements with respect to typical environmental conditions for space applications. Based on this model, the verification of induced strain and forces is shown for typical lightweight constructions. The results show that classical actuator concepts can be used for those structures without loss of actuation performance. The necessary actuator power with respect to disturbances is calculated from eigenvectors after the integrated modeling of the structure. It is shown, how the limitations for the actuator input signal can be considered for the actuator placement and control gain determination. The focus of this thesis lies on the realization of the active damping with respect to the different disturbances. Hence, the acceleration feedback and linear quadratic control are two common control concepts which are used within this work. Thanks to both, the damping of the selected structures can be significantly increased.
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The active vibration damping of space structures is investigated. For this purpose, a solar array panel and an optical instrument are used as example structures. A piezoelectric model is developed from measurements with respect to typical environmental conditions for space applications. Based on this model, the verification of induced strain and forces is shown for typical lightweight constructions. The results show that classical actuator concepts can be used for those structures without loss o...
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