SU1312695A1 - Two-reading synchro resolver - Google Patents

Abstract

The invention relates to electrical engineering, in particular to electrical machines of automatic systems and computer technology. The aim of the invention is to improve accuracy by reducing the mutual induction between the coarse and fine windings. The two-digit rotating transformer contains a rotor magnetic core with a number of slots z, on which the p-pair pole excitation winding is located from series-connected sections covering the teeth of the magnet-conductor, and the stator magnet core, on which the coil and accurate counting output windings are located. The excitation winding, in addition, contains at least two equilibrium sections, connected in series and opposite, located on the rotor magnetic core and connected in series with the p-pairs of the pole excitation winding. The sections are arranged in increments along the grooves of the magnetic circuit equal to T - 2j, where j (360 / z) j, j is selected from the row of numbers 0,1,2 ... when the condition (cos (z-p)) / cos y min is met. 3 il. (L with yu C5 with SP

Description

113

The invention relates to electrical machines of automatic systems and computing, in particular, to double-digit rotating transformers (DVT),

The aim of the invention is to improve the accuracy by reducing the mutual induction between the coils of a coarse and precise count.

Fig. I shows DVT; Fig. 2 illustrates the principle circuit of the DVT; in FIG. 3, a field winding.

The DVT consists of a stationary stator housing I (FIG. 1) carrying the magnetic conductor 2 and a rotary housing of the rotor 3 carrying the magnetic conductor A. On the magnetic conductors 4 and 2 of the rotor and the stator windings 5 are placed. The winding 6 of the excitation is placed on the rotor. The stator contains a pair of quadrature bipolar windings 7 and 8 of a rough reference and a pair of quadrature multipolar windings 9 and 10 of a precise reference with the number of pairs of poles p. The output windings of the DVT have a sinusoidal distribution of conductors in the grooves.

The rotor magnetic core has a number of teeth equal to the number of poles (2p). Precise reading windings z, 20, the stator magnet has a number of teeth z 25. The number of pole pairs of multipolar precision windings is p 10.

The excitation circuit of rough and accurate readings is implemented in the form of one common winding (Fig. 3). The winding contains a series-connected concentrated winding of the prong-pole type and two identical equal-turn concentrated sections opposite to the magnetic core. Each tooth-pole section has ten turns, and equal-turn sections 11 connected in series with it have one turn each. Consistently connected with the winding - the pole of the equal winding may consist of several pairwise identical opposite sections.

Consistently connected equal sections with an even number of pole pairs of precise counting windings can cover any (both even and odd) number of teeth of the magnetic wire.

Consecutively connected equal-turn sections of the field winding.

min

52

can be performed with a diametric pitch, which is advisable from the point of view of obtaining the maximum output voltage at the output windings

rough reading, or with a reduction in pitch (2) relative to the diametric (fig. 3).

In this case, the shortening of the step (2y) is chosen so as to ensure

for a particular construction, the minimum or zero value

s2g1g - 2 g

COSJ where p is the number of pole pairs of windings

accurate readout; Zj - the number of grooves of the magnetic circuit,

Carrying the output winding. In the case under consideration, the contraction of pitch 2j is equal to two teeth divisions of the rotor, i.e. 360 / z j 18 (at), and the value of Zj - p 15

cos (z 2-p) and the condition -. 0

 T

This ensures that there is no electromagnetic coupling between the low-turn sections and the sinusoidally distributed output windings of a precise reference at the lowest harmonic,

available in the decomposition of the floor of the output windings of the exact reference.

In order to completely eliminate the connection of low-voltage sections with multipole output windings of exact counting, it is enough to choose even numbers of pole pairs of precision count windings and number of teeth of the magnetic circuit carrying the output windings.

The device works as follows.

in a way.

When an excitation voltage is applied to the excitation winding on the output windings of the DVT, depending on the angular position of the rotor ci, voltages are proportional to sinpoi and cospd, respectively, on the sine and cosine output windings of the exact reference and cos on, respectively, on the sine and cosine windings of the rough count. In this case, the output voltages on the windings of the exact reference are obtained by mutual induction of a part of the excitation winding in the form of a multi-pole prong-type winding, and the output voltages on the coarse reference windings by the mutual induction of the small-turn sections with these windings. Vza313

Claims (1)

Immunity of low-turn sections with output windings of precise counting and prong-pole type windings with rough-count output windings are practically suppressed by the constructive design of the device. Invention Formula A two-digit rotating transformer containing a rotor magnetic core with a number of grooves z, on which the p-pair pole excitation winding is located from series-connected sections, encompassing the teeth of the magnetic core, and the stator magnetic core, on which are located the coarse and precise output windings from 2695 In order to increase accuracy by reducing the mutual induction between the coarse and fine windings, the excitation winding is equipped with at least two equally-spaced, series-counter sections included, located on the rotor magnetic conductor and connected in series with the p-pair a field winding of the excitation, the sections being laid in increments along the grooves of the magnetic circuit, equal to (; r-2y), where y 360 / zj, and j is selected from a number of 0,1,2 ... . cos f fulfilling the conditions min Cos .one 2 3 1 Cospd Sinfkh Ya Figg /; / / 7 3