SU1702492A1 - Double-reading resolver - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to improve accuracy. A two-digit rotating transformer contains rotor (stator) cores. The windings 9 and 10 of the excitation of the exact reference are made in the form of four parts 23-26. Sequential consonant inclusion of the first 23 and third 25 and counter-inclusion of the second 24 and fourth 26 parts form one tooth with a pole-pole excitation pair with p pairs of poles. Sequential counter-inclusion of the first 23 and third 25 parts of the education C N R oo

Description

The first quadrature excitation winding j with p / 2 pole pairs. The sequential counter-switching of the second 24 and fourth 26 parts forms the second quadrature winding 10 of the excitation with р / 2 pole pairs. Every weekend

ONMuirv i3 and 14 precise readings are made in the form of gay hours of 27 and 28, 29 meters respectively. The counter-directional connection of the indicated parts forms the output windings with p pairs of poles. This increases the accuracy. 4 il.

The invention relates to electrical engineering, in particular to electrical machines of automatic systems, and computing fCvMMKe, and can be used to create high-precision dual-count rotary transformers (DVT).

 inventing - enhancing for sure .. G & I

Chafig. 1 shows schematically DVT; on Lee). 2 is a DVT circuit; in fig. 3 - connection of the leads of the parts of the windings of the exact reading on the terminal blocks of the rotor and the stator to obtain a DVT having the number of pairs of poles p (as in a known transformer) with one winding excitation of the exact reference; in fig. 4 - the same, to obtain a DVT having the number of pairs of policy p / 2 at two quadrature windings. excitement and accurate readout

The proposed DVT as well-known, with. It consists of coaxially arranged stationary housing 1 with magnetic conductor 2, stator 3 (Fig 1), and sleeve 4 of the rotor 5 carrying the magnetic conductor 6. The magnetic coils 2 and 6 of the stator 3 and the rotor 5 contain windings of a coarse and precise count. The coils of the excitations of the PEL can be placed both on the rotor b and on the stator 3. In this example of the execution of the PTS, the excitation windings are placed on the rotor 5 and the outgoing windings on the coil 3.

I magnet duct b rotor 5 spacing c, quadrature windings 7 and 8 rough count excitations and one with p pairs of poyus or two quadrature windings 9 and 10 of excitation of a precise count (input windings) with p / 2 pairs of poles depending on the connection diagram conclusions.

On the magnetic core 2 of the stator 3 there are two quadrature sinusoidally distributed output windings 11 and 12 of rough counting and two windings 13 and 14 of exact counting. The DVT has the number of teeth of a magni-conductor 3B carrying the excitation windings 7-10, equal to the number of poles (2p) of the exact reading windings, and the other magnetic conductor 2 of the stator 3 has an arbitrary frequency of the quadrature windings of the rough counting 7 15 and 16, 17 and 18. The sine output winding 11 of a rough count has conclusions 19 and 20, and the cosine

The coarse output winding 12 has an RMGDK 21 and 22.

The windings 9 and 10 of the excitation are accurate (.. made in the form of four parts 23-26.

Sequential consonant inclusion of the first .j and third 25 and counter-inclusion of the second 24 and fourth 26 parts form one pole excitation winding with p parchem poles of the prong-pole type,

as in the famous transformer. The elco-counter-sequence of the first 23 and the retey 25 parts forms the first quadrature octation of the 9 excitation with p / 2 pairs of poles, and a consistent counter

switching on the second 24 and fourth 26 parts forms the second quadrature winding 10 of the excitation with p / 2 pairs of poles

The output windings 13 and 14 of the exact reference are made in the form of two parts 27 and 28,

29 and 30 respectively. Pospedovapenno-consonant inclusion of these parts forms the output windings 13 and 14 with p pairs of poles, and the counter-sequential inclusion of these parts of the windings forms

single windings 13 and 14 with р / 2 pairs of poles

The numbers of turns of the parts of the oversize marks, covering the teeth of the magnetic conductors, are determined by the expressions for the parts 23-26 of the windings 9 and 10 of the excitation

 -y-t- (1)

2 + ln (1)

 2;

45

for parts 27 and 28 of the output sinus winding 13

WPC sin p a + (-1G1 sin per (2)

pa,

30 cosine output

ri-l

+ (-) cos pa H. (3)

where n is the part number of the winding;

I and j are the number of the prong of the magnetic conductor carrying, respectively, the excitation windings 9 and 10 and the output windings 13 and 14;

Wmi, Wm2 - the maximum number of feeds, covering one tooth of the magnetic circuit, respectively, of one part of the winding 9 or 10 of exciting the iodine part of the output winding 13 or 14 "| . four

-ъ +

2l

O -1);

- j. -4p- +

.t

-2-0-1):

Z is the number of teeth of the magnetic circuit 2 carrying the output windings 11-14

The first quarter parts 23-26 (Fig. 2) of the windings 9 and 10 of the excitation of the exact reading have pins 31 and 32. 33 and 34 35 and 36, 37 and 38, respectively.

P

The first and second parts of the sinus windings 13 of the exact reference have pins 39 and 40. 41 and 42, respectively, and the first 29 and the second 30 parts of the cosine windings 14 of the exact count - conclusions 43 and 44, 45 and 46, respectively.

To use the DVT in the mode when the exact count has a reduction (the number of pole pairs) equal to p, clamps of the output rotor 5 and stator 3 should be attached to the terminals of the output pads of the rotor 5, according to the terminals of the windings. 3. At the same time, the excitation winding of the exact counting has conclusions 31 and 33, the output windings 13 and 14 of the exact counting are conclusions 39 and 42 (sinus winding 13), 43 and 46 (cosine winding 14).

To use the DVT in the mode when the exact readout has a reduction (the number of pairs of poles) equal to p / 2, jumpers should be placed on the clamps of the output pads of the rotor 5 and the stator 3 in accordance with FIG. 4. At the same time, the quadrature windings 9 and 10 of the excitation of the exact reference have pins 31 and 35, 33 and 37, respectively, sine 13 and cosine 14, the output windings of the exact count — conclusions 39 and 41, 43 and 45, respectively.

We will show that the described division of the windings of the exact reference into parts and the schemes of their mutual inclusion for obtaining the given windings really ensures the distribution of the windings obtained according to the required laws.

Using the expression (1), the distributions of the field windings are determined.

For iMiji r h. Odm with the number of PCGHR of the poles p; e winding pole pole, according to teach

, -w2i-i wVwY - wm1 (i} i

5This winding prong is a pole, as in the famous transformer.

For the first quadrature winding 9, an excitation counting with the number of pole pairs p / 2 is obtained

10Wi WV W i-Wn

one

one

 mi) (- 1) -

This is a prong-pole winding with a step of two prong divisions, i.e. with the number of pole pairs p / 2 (the winding sections cover odd-numbered teeth).

For the second quadrature winding 10, the excitation of an exact reference with the number of pole pairs p / 2 is obtained

Wi W2i - W i 1

(H - ЈН) | + 1 (-1)

This is a winding prong - pole with a step of two prong divisions, i.e. with the number of pole pairs p / 2 (the winding sections cover even prongs)

Using expressions (2) and (3). determine the distribution of the output windings.

For a sinus winding 13 with the number of pairs of poles p

Wjc wlc Wr ,, 2 sin + p - (- 1)

For cosine winding 14 with the number of pairs of poles p

Wjk Wj1k + Wfk Wm2 with + P (I - 1)

For sine winding 13 with number of pole pairs p / 2

7 (-

Wjc W) c - Wrc Wm2 sin, L

ЈL 4- P-. l

45 For cosine winding 14 with number

pole pairs p / 2

wJk w / k-wk w, T л ° 2Jt

v, -n2 cos

4 + i-2 / (-1) l

0

Example Set by the number of pole pairs of the windings of a precise reference, which must be an even number. Therefore, the number of teeth of the magnetic circuit 6 (rotor 5) carrying the excitation winding p-16. The number of teeth of another magnetic conductor 2 (stator 3) carrying output windings, which can be any, will be defined. The maximum number of turns covering the teeth of the magnetic circuit 6 and

the magnetic circuit 2, the rotor 5 and the stator 3, we define Wmr Yu; Wm2-20.

The number of turns in the four parts 23-26 of the exact counting windings 9 and 10, covering the teeth of the magnetic circuit 6. is defined by the formula (1) and takes the form: for the first part 23 (p-1)

((-)

for the second part 24 ()

w,

- ten

G 1 1 (P +1 1 G1 1 (

J-7--2C-1) J (1) J;

for the third part 25 ()

4-4 ((- about

for the fourth part 26 (p-4) wf-, (- 1) (- o.

I-2 30

The results of the calculation of the distribution of the turns on the teeth of the magnetic circuit according to these expressions are given in Table. 1 in columns 2-5. The distribution of the turns on the teeth of the magnetic circuit b with a consistently-consistent connection of the first 23 and third 25 and counter-switching of the second 24 and fourth 26 parts of windings 9 and 10 to obtain one winding with the number of pole pairs is given in column 6 of the table. 1. As it can be seen, a tooth-pole winding is obtained. The distribution of the turns on the teeth of the magnetic conductor 6 with the series-opposite switching on of the first 23 and third 25 parts to form the first quadrature winding 9 with the number of pole pairs and the series-opposite turning on the second 24 and fourth 26 parts to form the second quadrature winding 10 excitation with the number of pairs of poles are given respectively in columns 7 and 8 of table. 1. As can be seen, two quadrature windings are obtained by the number of pole pairs.

The number of turns in the parts of the sinus output windings 13 accurate reference, covering the teeth of the magnetic circuit 2 of the stator 3,

five

0

five

0

five

0

5 0 5 Q 5

calculated by expression (2), take the form:

for the first part 27 () W | 1C 10 sin 8 o) + sin 8

for the second part 28 (p-2) Wfc 10 sln8o | -sin 8 of.

The number of turns in the parts of the cosine external windings 14 of the exact counting covering the teeth of the magnetic circuit 2 of the stator 3, calculated by the expression (3), takes the form:

for the first part 29 ()

WJV 10 cos 8 o) + cos 8

for the second part 30 ()

  10 cos8o) -cos 8 of

The results of calculating the distribution of the turns of the teeth of the magnetic circuit 2 in the parts of the windings are given in columns 2–5 of the table. 2. The distribution of the number of turns on the teeth with a consistent-consistent connection of the first and second parts of the sinus and cosine windings to obtain output windings with the number of pole pairs is given in columns 6 and 7 of the table, respectively. 2. The distribution of the number of turns on the teeth with a series-opposite connection of the first and second parts of the sinus and cosine windings to get the windings with the number of pole pairs p / 2 4 is shown in columns 8 and 9 of the table, respectively. 2

DVT works as follows.

When an alternating current voltage is applied to the coil of the rough coil on windings 11 and 12, depending on the angular position of the rotor of the DVT, the voltage is proportional to sin a and s a, respectively, the voltage proportional to sin a and cos a. When the guitars are fed to the quadrature rough excitation circuit, the windings 11 and 12 are subjected to voltage, respectively, proportional to sln (a + 90 and cos (a + 90 °)).

When mutually switching on the asy windings of a precise reading according to the scheme in FIG. 3, when AC voltage is applied to pins 31 and 33 at pins 39 and 42, 43 and 46, depending on the angular position of the rotor of the DVT, voltages are respectively proportional to the sin ray cos.

When the exact winding parts of the circuit of FIG. 4 are mutually turned on, when AC voltage is applied to pins 31 and 35, pins 39 and 41, 43 and 45 depending on the angular position of the rotor of the DVT, voltage proportional to sin is applied, respectively. & and

R . os - and Mri supply voltage to pins 33 and 37 to pins - G11- and 41 43 and 45 depending on the angular pplo / ghgi and the rotor of the DVT point with the IHO connection

nor proportional sin 5- + 90 °) and

R,

cos (-Ј-a

90 °)

The proposed DVT differs from the well-known extended use of its use. It CAN completely function as a Reformer with a single linear excitation winding with an accurate reading of e at P1 after the pairs of poles. In addition, the DVT can be used with two excitation windings of an exact reading at the number the peer of the p / 2 Ht and the two quadratures of the exact counting allows the use of a DNU as the primary converter of the angle – to-converter; the code increases its accuracy

Claims (1)

Formula of the image:, Two-digit rotating transformer containing the stator and rotor magnetoductors, while on one of the Mai nitroprovods the number is equal to the number of poles of the exact power channel; coarse readout, and on the other magnetic core there are two quadrature winding peers, one of the pairs is bipolar sinusoidally distributed coarse output windings, and the other - an accurate reference winding with p pairs of poles, where p is an even number, characterized in that, in order to increase the accuracy, the excitation winding of the exact reference is made in the form of four parts, and each output winding of the exact reference is in two parts, while successively - consistent inclusion of the first and third and the second and fourth phase switching on of the field windings, as well as the sequential-consistent connection of the two parts of each of the output windings, forms a system with p pairs of poles, and the series-opposite connection of the first and third, second and fourth windings of the excitation windings, respectively and a series-counter connection of two parts of each of the output windings - two quadrature output windings with р / 2 pole peers, while the number of turns of the winding parts is exact This is defined by the expressions: for field windings g 11i + n - 1,  J --- l - (- i) 2 +1 -n ttt (-, dg output sinus windings Wfc --Ј sin p a j + (-1) sin pa ,, DLR cosine windings WPk - - cos p a I + (-1) n 1 cos pa jj. where n is the part number of the winding, I and j are the number of the prong of the magnetic conductor carrying, respectively, the field winding and the weekend; Wmi and Wm2 maximum number of turns, covering one magnetic circuit prong, respectively one excitation winding and one output winding, l 2g O -7G7G + trp 0-D;  O 1) where Z is the number of teeth of the magnetic circuit carrying the output windings Table 1 table 2 8 3 /////// ttt, 7 five  /////// 777 / Fiá.1 31 33 35 37 oh oh 32 39 W t3 Y v About About From About 0 tz m s Fi. H. 31. 33 35 37 oh oh oh 32 6Wq36b38 3d U 4Jtf5 oh oo m "g Fig. + Ј /