SU379025A1 - JNBLIOT8 - Google Patents

Description

one

Linear stepping motors are known, consisting of two statO | rynnyh packages, equipped with magnetizing windings and winding. control, and an unwound flat mobility located between them - a runner, along the length of which the magnetic and non-magnetic portions alternate.

The aim of the invention is to increase the pulling force.

For this, the runner is made of a number of plates arranged one above the other, between which are placed unwound fixed cores, also consisting of alternating magnetic and non-magnetic sections.

FIG. 1 shows the described engine, a longitudinal section; in fig. 2 - the same, polirechny cut.

The motor consists of a casing 1 in which external stator packs 2 with a two-phase winding 3 controls are strengthened (the beginnings and ENDS of the phases are designated A-x and B-y, respectively), which excite permanent magnets 4 and internal stator pack 5.

 the stator packs 2 and 5 freely move two crust packs 6, made in the form of frames, in the windows of which magnetic conductive laminated rods 7 are inserted. In general, the number of internal stator and core packs can be

arbitrary. Anchor pouches are rigidly connected to each other, and their rods 7 are opposed to each other.

Internal stator packs 5 hard

fastened to the housing / and made similarly to the root packages 6, and their rods are arranged against the teeth of the outer stator of the packages 2. Step along the rods of both the stator and the root packages is equal to the step t along the teeth of the poles of the outer stator packages 2. External stator packs 2 are arranged in pairs against each other. The permanent magnets 4 are located between the stator packs so that they create in a closed loop

flow in one direction. The step on the teeth of adjacent pole projections located on one side of the exciting magnet is equal to

n 4 (n ±

20

and the step along the teeth of the stator poles, located on different sides of the exciting element, is

/ .1),

t - z

where Kn and Km are integers selected from the condition of convenient placement of active elements.

The motor (operates as follows. When a signal is fed to the control winding (e.g., A to X), the magnetizing force generated by it (c. S) amplifies the magnetic field of the field between the poles of the first pair. The anchor bags 6 move and set their rods against the teeth and rods of stator packs 2 and 5, reducing, thereby, the magnetic resistance.

When a signal is applied to the B winding (winding A x is turned off), the measles move a quarter of the spade to the right, providing the greatest magnetic conductivity for the flow of the third pair of poles. Receipt of the signal to the winding A x, but reverse polarity, moves the measles to the right “and a quarter of the jaw schaga, creating a path for the passage of the magnetic flux of the second pair of poles, etc.

Since not only air gaps, but also non-magnetic gaps are successively included in the magnetic flux contour, both the Yamax conductivity and the conductivity A, min, i.e., the difference Yamax-min decreases by n times, is reduced in series. Here n is the number of air gaps between the pole spikes of the outer stator packages.

However, with an increase in the total air gap by a factor of one when each of the magnetic conductive elements is located opposite each other. with. (Fy and Pb) can also be increased n times. Thus, the thrust force with this design increases by n times.

At the same time, the dimensions of the engine due to the placement of additional internal stator packages and an increase in the space for the placement of active elements will not be increased n times. The specific value of pulling force increases, i.e., the proposed design allows combining two or more packages in one engine, making them a common series of small-conduit elements.

When the total air gap is maintained in the engine, the use of several core packages will allow an increase in the modulation depth of the pole conductances while maintaining the same values of n. with.

excitement and control. The specific engine thrust will also increase.

Subject invention

Linear schagovy engine consisting of two stator packs, supplied with magnetizing windings and control windings, and an unwound flat movable part located between them - a runner, the length of which alternates magnetic and non-magnetic sections, which differs, to increase power, a runner consists of several plates placed one above the other, between which are placed unwound fixed cores, also made of alternating magnetic and nonmagnetic portions.