Symmetrical permanent magnet type one-way proportional electromagnet based on air gap compensation

The invention provides a symmetric permanent magnet type one-way proportional electromagnet based on air gap compensation. A front end cover and a rear end cover are installed on the front side and the rear side of a stator respectively; N convex teeth are evenly distributed on the circumference of a yoke ring; yoke magnetic poles are formed by the convex teeth; stator magnetic poles on all yokesare the same in shape and axially aligned; a control coil is placed between the second yoke and the third yoke to form a control magnetic flux; a first magnetic isolation block and first magnetic steel are arranged between the first yoke and the second yoke; a second magnetic isolation block and second magnetic steel are arranged between the third yoke and the fourth yoke; armature magnetic polesare evenly distributed on the first armature and the second armature in the circumferential direction; the end face of each armature magnetic pole comprises a circumferential tooth face and a side vertical face, and the tooth