Active tendon control of guyed masts is analytically and numerically investigated. Controlled longitudinal displacement at the grounded end of the cable is used to stabilize planar oscillation amplitudes of both cable and beam. The equations of motion for a simple cable-supported cantilever beam are obtained including cable elasticity through finite strain. Analytical eigensolutions of the linearized equations are used to investigate influences of mechanical characteristics on a family of structural systems and to derive a nonlinear discrete model by classical Galerkin method. A one mode model is used to design linear and nonlinear feedback control laws. Comparisons on the effectiveness of different strategies are made on the basis of both control intensity and system response amplitudes.
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