NASA Technical Reports Server (NASA) · 1993 · 11 citations · 1 references
EngineeringAerospace EngineeringSystems EngineeringOptimizationSystem DynamicsSystems ModelingControl SystemsControl TheoryController DesignNonlinear ControlOptimal ControlSystem IdentificationControl Structure DesignControl System IdentificationIdentification Of Dynamical SystemsLinear Time-invariant SystemsModel Parameter IdentificationNonlinear System IdentificationParameter IdentificationSystem Identification In The Time Domain
The modeling, system identification and controller design aspects of the ASTREX precision space structure are presented in this work. Modeling of ASTREX is performed using NASTRAN, TREETOPS and I-DEAS. The models generated range from simple linear time-invariant models to nonlinear models used for large angle simulations. Identification in both the time and frequency domains are presented. The experimental set up and the results from the identification experiments are included. Finally, controller design for ASTREX is presented. Simulation results using this optimal controller demonstrate the controller performance. Finally the future directions and plans for the facility are addressed.
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