Mobile piston, magnetorheological damper and magnetic circuit calculation method

The invention discloses a moving piston, a magnetorheological damper and a magnetic circuit calculation method.The moving piston comprises an outer cover, an iron core, a coil, a magnetic conduction ring and a magnetic resistance ring, the iron core is fixedly arranged on a piston rod in a sleeving mode, an annular coil groove is formed in the outer wall of the iron core, the coil is arranged in the coil groove, the outer cover is arranged outside the iron core in a sleeving mode, and the magnetic resistance ring is arranged in the coil groove. The coil is sleeved with the magnetic conduction ring, the number of the magnetic resistance rings is an odd number, part of the magnetic resistance rings are embedded in the magnetic conduction ring at intervals, the remaining magnetic resistance rings are embedded in the outer cover at intervals, and the magnetic resistance rings and the magnetic resistance rings on the magnetic conduction ring are arranged in a staggered mode. The magneto-rheological shock absorber