Damping self-adaptive tuning magnetorheological damper

The invention relates to a damping self-adaptive tuning magnetorheological damper, which is used for realizing self-adaptive adjustment of magnetorheological damping parameters under the condition of constant current. The damping self-adaptive tuning magnetorheological damper comprises a cylinder barrel filled with magnetorheological fluid, a piston valve arranged in the cylinder barrel and piston rods connected to the left side and the right side of the piston valve and extending out of the cylinder barrel, wherein a magnet exciting coil is wound on the piston valve; an annular gap is formed between the outer surface of the piston valve and the inner wall of the cylinder barrel to serve as a liquid flow channel; and the inner diameter of the barrel wall of the cylinder barrel is reduced in a multi-stage mode from the center to the left side and the right side, so that the area of the liquid flow channel is gradually reduced, and under the action of a magnetic field of the magnet exciting coil, parameters of