Permanent magnet drive speed regulator

The invention relates to the technical field of drive speed regulation and discloses a permanent magnet drive speed regulator which comprises a driving shaft, a driven shaft, conductor rotors, permanent magnet rotors and a fluid drive speed regulation component, wherein the fluid drive speed regulation component comprises reciprocating wheels connected with one side of the corresponding permanent magnet rotors, reciprocating rings which are in concave-convex fit with the reciprocating wheels and fluid drive cylinders capable of driving the reciprocating rings to move; each of the fluid drive cylinder is a piston-type drive cylinder; a piston rod of each fluid drive cylinder is fixedly connected with the corresponding reciprocating ring; the fluid drive cylinders directly drive the reciprocating rings to move by virtue of the piston rods so as to further drive the reciprocating wheels to drive the permanent magnet rotors to perform axial movement along the driven shaft, so that regulation on coupling area or a