Simulation and Control of Flexible Octagonal Satellite Structures via Integrated FEM and Single-DOF Controllers

This study presents a comprehensive modeling and control framework for flexible octagonal satellite truss structures using the Finite Element Method. The structural model is formulated as a 3D truss with material and geometric properties corresponding to lightweight satellite components. Dynamic simulations include both uncontrolled and controlled responses, where a single-degree-of-freedom active controller is coupled to the rotor node in the Z-direction. Time-domain responses, modal characteristics, and energy distribution are analyzed under transient excitations. The effectiveness of the control system is evaluated by comparing rotor displacements, velocities, and structural stresses with and without control. Results demonstrate a significant reduction in vibrations and improved dynamic performance, highlighting the importance of integrated structural-control design for space applications. The proposed methodology offers a modular and scalable framework for designing advanced satellite structures. This innovative approach ensures flexibility and adaptability, making it the ideal choice for advancing satellite technology.