Stability analysis of spherical pendulum with rotational spatial vibrating suspension point

We consider a spherical pendulum whose suspension point performs high-frequency spatial vibrations. Dynamics of this pendulum can be described by averaging of its Hamiltonian over phases of vibrations. We impose conditions on vibrations such that that the averaged Hamiltonian has a rotational symmetry. Under these conditions we present a bifurcation diagram for the phase portraits of the averaged system. We show numerical simulations of different examples of vibrations. Bifurcation of phase portraits of spherical physical pendulum with vibrating suspension point are considered as well.