Elastic piece, proportional valve and proportional valve flow linearity optimization method

The invention belongs to the technical field of proportional valves, and particularly relates to an elastic piece, a proportional valve and a proportional valve flow linearity optimization method.The elastic piece comprises an elastic piece body and a plurality of special-shaped holes formed in the elastic piece body, and the multiple special-shaped holes are distributed around the center axis of the elastic piece body in an annular array mode; each special-shaped hole comprises a first hole section, a second hole section and a third hole section, the second hole section is connected between the first hole section and the third hole section, the first hole section is arranged at the outer edge of the elastic piece main body, the third hole section is arranged at the center of the elastic piece main body and between two adjacent special-shaped holes, and the first hole section and the second hole section are arranged in the radial direction of the elastic piece main body. The first hole section of one special-