METHOD OF CONTROLLING PULLING FORCE OF MAGNETIC DRIVE ARMATURE Russian patent published in 2008 - IPC H01F7/13 

FIELD: physics; transportation.

SUBSTANCE: in the method of controlling pulling force of a magnetic drive, involving movement of the armature of a magnetic system relative the magnetic system of the magnetic drive orthogonal to magnetic field lines, the pulling force is controlled by turning the armature of the magnetic system around its axis relative the magnetic system of the magnetic drive. The magnetic systems can be made from permanent magnets and/or electromagnets. The value of the pulling force is proportional to the value of the turning angle of the armature and is determined from the mathematical function: Fα=Fo(360-2nα)/360 under the condition 360/n≥2nα≥0, where α - is the angle of turn of the armature of the magnetic system relative the magnetic drive, in degrees, n - is the number of poles along the circle of the armature of the magnetic system, Fo - is the force, required for axial displacement of armature of the magnetic system, when the strength of the magnetic resistance is minimal (α=0); Fα - is the force, required for axial displacement of the armature of the magnetic system, at a given angle, α.

EFFECT: wider functional capabilities of powered devices due to continuous control of the pulling force of a magnetic drive under effect of an external force applied to the armature.

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