Rotary excitation friction-piezoelectric composite power generator

The invention relates to a rotary excitation friction piezoelectric composite power generator, and belongs to the technical field of new energy. The rotary excitation friction piezoelectric compositepower generator is characterized in that an end cover is arranged at the end portion of a cylinder, a rotating shaft is arranged on the end cover and a shell bottom, a swing ring of an exciter is sleeved on a fixed ring, a shaft inclination angle exists between the fixed ring and the axis of the swing ring, a poking ring is arranged on the outer edge of the swing ring, poking sheets are arranged on two sides of the poking ring, the fixed ring is arranged on a rotating shaft and rotates along with the rotating shaft, two brackets and a spacer ring are arranged on the inner side of a shell barrel, each bracket is composed of an annular plate and a protective plate, a composite film composed of a friction layer and an electrode layer is arranged on the convex surface of each protective plate,a piezoelectric vibrator