Micro-stepping motor using magnetostrictive actuators

摘要

The present invention by using a with a linear magnetostrictive material once by producing a full stepping acting on on the transmission torque large, creating a high-precision fine each high-precision stepping motor, To this end, closing electromagnetic coil around the magnetic elastic element in the outer group by installing a permanent magnet with magnetic causing the deformation of the positive / negative, depending on the magnetic field variation, but two or more installed above the rotary body connected to the support shaft to the bearing attaching the friction plate to the end of the group with the magnetostriction is boosting a friction plate to the rotation body by a spring force configured always possible to the friction plate and the rotating body contact and, when the current signal of the saw-tooth groups having the magnetostriction type as that in the inclined section of the sawtooth signal gradually displaced increase granted by the frictional force by turning the rotating plate and the magnetic teeth, depending on the form of the current is abruptly falls Not as drastically shrink group with type not completely reversed by one inertial force trying to reverse the rotating plate and sliding between the friction pads and the rotating plate, groups with a number of magnetostrictive get up the continuous stepping action by acting sequentially for the stepping motor operating and it characterized in that.