SU399036A1 - ELECTRIC DRIVE - Google Patents

Description

one

Known actuators containing a piezoceramic element and a movable node do not have sufficient equal angular rotation.

In order to increase the uniformity of the angular rotation speed in the proposed electric drive, the piezo-ceramic element is designed as a ring mounted on a fixed base, divided into separate equal parts, some of which are fixed and others free, and the mobile node has a ring enclosing the piezoceramic ring and in contact with NO | M.

FIG. 1 is a schematic diagram of the electric drive described, and FIG. 2 - view of the oscillations of the points of tangency of the free ends of piezoceramic elements with a surrounding ring.

The electric drive consists of piezoceramic ring, divided through 120 ° into equal parts (piezoceramic elements) 1, 2 and 3, which are mounted on a fixed base 4 and fixed to it on one side, and the surrounding ring 5 is in contact with the piezoceramic ring.

When applying alternating voltage to the piezoceramic elements 1, 2, and 3, due to the reverse piezoelectric effect, they come to “freeze | 1 motion. With

This point of tangency L, B and C is perfect for the DWI of the bridegroom, directed at a certain angle to the tangent circle of ring 5 (.arrowed by arrows L, S and C in Fig. 2). During one half cycle, the voltage is piezoceramic. The elements 1, 2, and 3 put pressure on ring 5 and rotate it in the direction indicated by arrow D (Fig. 1). During the other half period, the elements lower the ring 5 and return to their original position.

The rotational speed is regulated by varying the frequency and amplitude of the supply voltage, with possible reversible operation of the electric drive in various environments.

Subject invention

An electric drive comprising a piezoceramic element and an iodine unit, characterized in that, in order to increase the uniformity of the angular rotation speed, the piezoceramic element is designed as a ring mounted on a fixed base, divided into separate equal parts, one ends of which are fixed, and the others are free, and the movable the knot is in the form of a ring enclosing a piezacceramic ring and in contact with it.

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