Method and device for measuring rotational inertia of power assembly, medium and electronic equipment

The invention discloses a method and device for measuring the rotational inertia of a power assembly, a medium and electronic equipment. The method comprises the steps that the mass of a plurality of calibration objects is acquired, and the swing period duration of each calibration object measured through a measurement device is acquired; curve fitting is carried out according to the mass of each calibration object and the corresponding period duration, and the target lifting rope rigidity when the mass in a fitting curve is equal to the mass of the power assembly is determined; the swinging period duration of the power assembly measured by the measuring device under a plurality of postures is obtained; according to the target lifting rope rigidity and the swing period of the power assembly in each posture, the rotational inertia of the automobile power assembly in a coordinate system is calculated; and coordinate system conversion is performed on the rotational inertia under the coordinate system of the auto