Abstract: Dynamics of plates, as well as its vibration control, is an important research topic in the design of engineering structures. In this paper, based on Hamiltonian formulism using the refined dynamic equation of thick plates, the vibration control of plate structures is investigated. By satisfying the boundary conditions of plates, vibration modes of thick plates were obtained. The independent modal space control was applied to achieve the active vibration control of cantilever plates. The calculated results were compared with those based on Mindlin plate theory. The results were analyzed and discussed through a comparison with numerical simulations. The research results of this paper can be applied to the analysis of structural dynamics and vibration control in modern engineering.