Abstract
Dynamics of a structure composed of two pendulums attached to a rotating rigid hub is analysed in the paper. The system is rotating in a horizontal plane so the gravity force does not influence its motion. Both pendulums are treated as lumped masses fixed at the ends of stiff and massless rods connected to the hub by flapping hinges. Three possible variants of the excitation are considered: (a) an ideal energy source, where torque is given by a defined harmonic function (b) a simplified limited power supply, where torque is given by an arbitrary defined function or (c) a non-ideal energy source, where DC output characteristic of limited power is taken into account.
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