We enhanced the bang-bang vibration control by using an electrical resonance mechanism. The bang-bang method is used in many engineering applications because of its simplified hardware configuration in which a constant-voltage supplier is shared by multiple actuators. However, its control performance is restricted, because the supplied voltage is constant and the sharp modulation of the control input induces chattering, which wastes a significant amount of energy. Our approach to overcome these problems was to combine the bang-bang method with tuned electrical resonance. Based on an elaborate analysis of phase relations between mechanical and electrical vibrations, three switching logics were devised for the hybrid method. Experiments on a 10-bay truss structure demonstrated that our hybrid method not only enhanced vibration suppression of the bang-bang method, but also prevented control chattering. Nomenclature B p = input matrix b p = piezoelectric constant of actuator C S p = constant-strain capacitance of actuator D = damping matrix F = positive feedback gain f = tensile force exerted on actuator I rms = performance measure in simulation i = electric current ( _ Q) K = constant-charge stiffness matrix k p = constant-charge stiffness of actuator L = inductance in circuit M = mass matrix Q = electric charge applied to actuator R = resistance in circuit St = switching function (1, point 1; 1, point 2) u= displacement vector of all truss nodes u p = elongation of piezoelectric actuator u 1 = x directional displacement at tip node V a = voltage generator representing piezoelectric effect ( b p u p ) V e = external voltage (greater than 0) V p = voltage applied to piezoelectric actuator , , 1 , 2 = positive constants rms = root mean square of displacements of all truss nodes 1 = first modal displacement = phase constant ! = angular frequency of first modal vibration