Measurement apparatus of center of mass of picosat and nanosat satellites

Disclosed in the invention is a measurement apparatus of centers of mass of picosat and nanosat satellites. The measurement apparatus comprises a pedestal, at least three weighing units, at least two positioning pins, a support plate, a support rod, and a vertical rotation rack. The at least three weighing units are installed on the pedestal and are distributed along the peripheral direction of the central shaft of the pedestal at equal intervals. The at least two positioning pins are vertically fixed on the pedestal. The support plate is supported and installed by all weighing units jointly; and at least two positioning holes cooperating with the positioning pins are formed. The support rod is vertically fixed on the support plate. The vertical rotation rack includes a mounting bench fixed at the top of the support rod, two support seats fixed on the mounting bench, a satellite mounting rack for fixing a satellite and a positioning mechanism; the two ends of the satellite mounting rack are installed on the two support seats in a rotating mode by a horizontal rotation shaft; and the positioning mechanism is used for fixing the satellite mounting rack. According to the invention, a satellite is fixed by a pure mechanical structure and the center of mass of the satellite can be clamped by one-time clamping. Moreover, the integrated structure is simple; the installation becomes convenient; the working is stable; the measurement efficiency and measurement precision are high; and he research and manufacturing costs are low and the like.