SU1302434A1 - Shaft turn angle-to-pulse sequence converter - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in devices for analog-to-digital conversion of angular information. The aim of the invention is to simplify the converter by reducing the volume of the equipment while maintaining high resolution. The goal is achieved by the fact that the converter of the angle of rotation of the shaft, the contents of the sine-cosine angle sensor 1, the scale unit 3, the sum-difference unit 4, the block 5 of the meanders of envelopes of the meanders and the block 6 of the addition of carriers, introduced a switch 2 quadrants, The control input of which is supplied with the control signal from the add-on block 6. The introduction of a switch 2 of quadrants controlled from the output of block 6 of the addition of carriers allowed us to scale only one angle sensor signal having a high level range, which made it possible to process signals in both scale unit 3 and in subsequent converter blocks with a smaller number channels. 1 3, p. f-ly 5 8 ill. about ate

Description

11302434

The invention relates to automation and computing, and can be used in analog-to-digital conversion devices of angular information, 5

The purpose of the shadow invention is to simplify the transformation while maintaining its high resolution. FIG. 1 shows a converter block diagram; figure 2 -} 0 circuit switch quadrants; in fig. 3 - scale unit diagram; in fig. 4 is a diagram of the sum-difference block; in fig. 5 is a block diagram of the forma-sine-cosine angle sensor 1 recorded with alternating voltage.

and U.sinuJt. (one)

In this case, the voltage from the output of the sensor 1 is removed

and K-and sin pd-sinuJt;

and, K-u,

Cos pd sinujt.

(2)

and and u come on sig signals

I A

switchboard inputs of 2 quadrants and on sine and cosine inputs

 . ii rJ failC4. rilljr "lJUJril 4 4" n.l.jr - l- iri

envelopes of meanders; 6 to 15 of the sum-difference unit 4 correspond to the block of the addition of the carriers; in fig. 7 is a schematic of a typical node of the adder unit; in fig. 8 is a diagram of the operation of a converter;

20

The converter contains a sine-cosine angle sensor 1, a switch 2 quadrants, a scale unit 3, a sum-difference block 4, a block 5 of the meanders of the enveloping meanders, a block 6 of the addition of carriers.

Switch 2 (Fig. 2) quadrants contains keys 7-1 - 7-4 and inverter 8.

venno. In block 4 (FIG. 4), the signal U is compared with the signals U and U on the comparison elements 12-1 and 12-2 from the outputs of which signals U and U are taken

respectively, having a rotor speed of the sensor and representing envelopes filled with a meander-type carrier (Fig. 8, only the envelopes of the meanders are shown) and shifted among themselves by 90 al. degrees. and 45 el.grad. relatively rounding round

and, and Uo respectively.

Signals and

and Ug from the output of the Sum-Scale Unit 3 (Fig. 3) of the content of the 30 Difference Unit 4 is fed to the inverter 9 and the resist splitter-corresponding amplifiers of the driver 10-1 - 10-6.

Sum-difference unit 4 (Fig. 4) contains an inverter 11 and elements 12-1 or 13-3 and 13-4 of block 5 of formers (Fig. 5) of the envelopes of the meanders, from the output of which signals U are removed

12-8 comparisons performed on differentials filled with a meander-type carrier (Fig. 8, only envelopes of the meanders are shown),

potential amplifiers.

Block 5 of the formers (FIG. 5) of the envelopes of the meanders contains limiter amplifiers 13-1 to 13-10. .

Block 6 of the addition (FIG. 6) of the carriers contains nodes 14-1 to 14-8.

A typical node (14-1 - 14-8) contains (Fig. 77 inverters 15-1, 15-2, elements AND 16 and 17, elements OR 18.

The following notation is used in the converter operation diagram: and and and, - signals from the outputs of the sine-cosine Angle Sensor 1; U and U - signals from the outputs of the switch 2 quadrants; and,, and. - from the outputs of the scale unit 3; U, U, and and - and - signals from the outputs of the sum-difference unit 4; Uj - -U ,, - signals from the outputs of block 5; U, Ug.,

Uc3. Wow. V, os.

ORD units of block 6; U

40

andr (fig. 8, only envelopes of meanders are shown),

Signals and., And, from the output of block 6

oh

the shaper envelopes of the meanders are fed to the inputs of the node 14-2 of the carrier addition device (Fig. 6), where the logical function is performed

and,

and, + and U

(3)

45

As a result of the sequential combination of the signals Uj and U in accordance with the expression (3) at the additional output of the block 6 for the addition of the carriers 5Q, a rectified (detected) control signal and

and - signals from

V eyh Bbtxa

signals from the outputs of block 6.

The converter works as follows. shimm way.

having a frequency of 2 times greater in relation to the signal U (U) and with differences in the moments of equality (in absolute value) of the voltages U and Uj

1 angle sensor. The signals are detected in the node 14-2 of the carrier addition unit 6 in accordance with its principle of operation. The sine-cosine angle sensor 1 is recorded by alternating voltage.

and U.sinuJt. (one)

In this case, the voltage from the output of the sensor 1 is removed

and K-and sin pd-sinuJt;

and, K-u,

Cos pd sinujt.

(2)

and and u come on sig signals

I A

switchboard inputs of 2 quadrants and on sine and cosine inputs

ii rJ failC4. rilljr "lJUJril 4 4" n.l.jr - l- iri

sum-difference block 4 respectively0

venno. In block 4 (FIG. 4), the signal U is compared with the signals U and U on the comparison elements 12-1 and 12-2 from the outputs of which signals U and U are taken

accordingly, having a rotor speed of the sensor and representing envelopes filled with a meander-type carrier (Fig. 8, only the envelopes of the meanders are shown) and shifted between themselves by 90 al-degrees. and 45 el.grad. relatively rounding round

and, and Uo respectively.

Signals and

and Ug from the output of the summing unit 4 is fed to the associated amplifiers form

the difference block 4 is fed to the corresponding amplifiers

whether 13-3 and 13-4 of the block 5 of the formers (Fig. 5) of the envelopes of the meanders, from the output of which the signals U are taken

  carrier filled me

andr (fig. 8, only envelopes of meanders are shown),

Signals and., And, from the output of block 6

oh

the shaper envelopes of the meanders are fed to the inputs of the node 14-2 of the carrier addition device (Fig. 6), where the logical function is performed

and,

and, + and U

(3)

45

As a result of the sequential combination of the signals Uj and U in accordance with the expression (3) at the additional output of the block 6 for the addition of the carriers 5Q, a rectified (detected) control signal and

This is because when the node receives two signals filled with a meander carrier, a rectified signal is formed at its output with logic level 1 in the case of carrier phase coinciding with logic level O in case of opposite carrier phases.

The signal Ujj is fed to the control input of the switch 2 quadrants and then to the inverter 8 and the control, the inputs of the second key 7-2 of the first pair of keys 7-1 and 7-2 and the first key 7-3 of the second pair of keys 7-3 and 7- 4 which

for example, the f5 signal of the inverter 9 U of the positive potential (logical 1) opens for a time.

level

The signal Uy from the output of the inverter 8 simultaneously enters the control

into the system of multilevel stresses

and;.

uJ-3 ..and;.,

 transformed

zyh

and:

the scale block 3 is determined by the discreteness of the change in the angular displacement ot ot of the rotor of sensor 1,

Multi-level signal system

and; -,, Ui-2, and.-h. . and;. From the outputs of the scale unit 3, it enters the inputs of the sum-difference unit 4, in which the signals are converted into a multiphase signal system .0 lov and ", Uf

and

and about

and

and,

each

t Wg, I. g, U (j 11 - 12

FROM which with respect to the envelope and g are shifted in phase of the envelope by the angle ЛЫ, 2ЛЫ, Zdo, 74с /, 6 & ot, З & Ñ, therefore, having a change during the period

2-1 l-z -2 -2-a

(Fig. 8, these signals are depicted without a carrier). In this case, the discrete inputs of the first key of the first pair are the keyness of the change in the amplitude of the signal in it 7-1 and 7-2 and the second key 7-4 of the second pair of keys 7-3 and 7-4. In this case, the keys 7-1 and 7-4 are closed, therefore, at the output of the first pair of keys 7-1 and 7-2, a signal arrives 25 arriving at the information input of the currently open key, for example, 7-2. With a negative difference (logical level O) of the signal U, the key 7-2 closes and the key 7-1 opens. Thus, the output of the first pair of keys 7-1 and 7-2 alternately with the frequency of the signal Uy appears the signal and, the signal Uj of the angle sensor 1 Since the signal U has differences in the signal U, at moments of equality of amplitudes ( - phases: to the solute value of the signals C, and both the angle sensor 1 and the positive potential of the signal Uy opens the key 7-1 and closes the key 7-2 of the first pair of 40 keys 7-1 and 7-2 during the signal transit time U with amplitude V range (0-0.7) U, and the negative potential of the signal U y closes the key 7-1 and opens the key 7-2 of the first 45 pair of keys 7-1 and 7-2 for n signal U, sensor 1 also during the time of its change in the range (0-0.7) 11, then at the output of the first pair of keys from the signals U and U of sensor 50. 1, the signal U is organized, which represents piecewise continuous function with a period equal to the period of the signal Ui (Ui) of sensors 1 with a change in amplitude in the range (0-0.7) and „55 (Fig. 8). Similarly, the keys 7-3, 7-4 work in the range (0.7-1).

As a result of this, the output of the controlled mixer creates two

12

 С + 2й.с1; -2l. .ct; + 2 & .l t (; -3 &cL; + 10DL; -Zly; + 3 & d-3

 2-2

To do this in sum-difference blo and.,.,, And ;; , and; ,,,

5-5

ke 4 signals U,

and

- f

and,

 i-2 2-J

subtracted with signal U, /,

The signals Uj-U from the sum-difference block 4 are fed to the inputs of the block 5 of the formers of the bend: their meanders, generating signals U - U, are filled with a meander type carrier. In this case, the fronts of the initial positive differences of the envelopes of the signals U-U, j are shifted with respect to the front of the positive differential signal,

signal u | and U, where the signal envelope has an amplitude range (0-0.7) U, and the angle signal - an amplitude range (0.7 - 1) and, which allows for further scaling only. signals of greater amplitude (U).

The signal from the output of the switch 2 quadrants is fed to the input of the reference signal of the sum-difference unit 4, and the signal U - to the input of the scale unit 3.

In the scale unit 3 (Fig. 3), the direct signal and.

and inverted

9 U inverter signal

into the system of multilevel stresses

and;.

uJ-3 ..and;.,

 transformed

zyh

and:

2-1 l-z -2 -2-a

(Fig. 8, these signals are depicted without a carrier). In this case, the discreteness of the change in the amplitude of the signal at the time of signal U of the phases:

the scale block 3 is determined by the discreteness of the change in the angular displacement ot ot of the rotor of sensor 1,

Multi-level signal system

and; -,, Ui-2, and.-h. . and;. From the outputs of the scale unit 3, it enters the inputs of the sum-difference unit 4, in which the indicated signals are converted into a multiphase signal system (Fig. 8, the indicated signals are depicted without a carrier). In this case, the discreteness of the change in the amplitude of the signal at the time of signal U of the phases:

lov and „, Uf

and

and about

and

and,

each

t Wg, I. g, U (j 11 - 12

FROM which with respect to the envelope and g are shifted in phase of the envelope by the angle ЛЫ, 2ЛЫ, Zdo, 74с /, 6 & ot, З & Ñ, therefore, having a change during the period

(Fig. 8, these signals are shown without carrier). In this case, the discreteness of the change in the amplitude of the signal at the time of signal U of the phases:

FIG. 8, these signals are shown without carrier). At the same time, the discreteness of the change in the amplitude of the signal in the signal of U az:

12

 С + 2й.с1; -2l. .ct; + 2 & .l t (; -3 &cL; + 10DL; -Zly; + 3 & d-3

(Fig. 8, these signals are depicted without a carrier). In this case, the discreteness of the change in the amplitude of the signal at the time of signal U of the phases:

 2-2

To do this in sum-difference blo and.,.,, And ;; , and; ,,

5-5

ke 4 signals U,

and

- f

and,

 i-2 2-J

subtracted with signal U,

(Fig. 8, these signals are depicted without a carrier). In this case, the discreteness of the change in the amplitude of the signal at the time of signal U of the phases:

The signals Uj-U from the sum-difference block 4 are fed to the inputs of the block 5 of the formers of the bend: their meanders, generating signals U - U, are filled with a meander type carrier. In this case, the fronts of the initial positive differences in the envelopes of the signals U-U, j are shifted with respect to the front of the positive signal difference,

2aot, Zds /, 7 & QL, WTD 5, respectively, and the duration of the positive

The signals and, C from the outputs of the block 5 of the envelopes of the envelopes of the meanders are fed to the inputs of the block 6 of the addition of carriers (Fig. 6), where the following logic functions are performed:

As a result of the sequential unification of the signals C in accordance with the expression (4) at the additional & output of the block 6 of the he1. The converter of the angle of rotation of the shaft into a sequence of pulses containing a sine-cosine angle sensor, a scale unit, the outputs of which are connected to one group of inductors, is rectified (about 35 ° of the sum-difference unit, the outputs

detected) control signal Vy, and at the main outputs two rectified (detected) signals Ug ,, and Ugw ,, 2, shifted one relative to the other by angle aY, co - 40 corresponding to the 1st 90th el.

The signals are detected sequentially in nodes 14-1 to 14-8 of the device for the addition of those in accordance with their principle of operation.

The generated signals.,;, And th „l from the outputs of block 6 of the addition are not ampoules

The common ones are periodic Q-two-digit code with discretization of DOTC which can be further used for processing increment pulses with subsequent accumulation in the counter, 55

Thus, the introduction of the angle of rotation of the shaft into the code of the switch of the quadrants of the output signals of the angle sensor 1 into the accumulating converter

which are connected to the inputs of the block of the envelope formers, meanders, the outputs of which are connected to the inputs of the adder block of the carriers, characterized in that, in order to simplify the converter, a quad switch is inserted into it, the information inputs of which are connected to the outputs of the sine-cosine angle sensor controlled by The input of the quad switch is connected to the additional output of the add-on block of the ЕСА1; they, the first quad switch is connected to the reference input of the sum-difference block, the second quad switch switch is connected to to the input of the scale unit, the outputs of the sine-cosmic angle sensor are connected to another group of inputs of the sum-difference unit.

2. The converter is l, 1, o t - l and h and i, so that the switch of quadrants contains four keys and an inverter, the input of which is the control input of the switch

and negative drops for period;

equal to the signal period em:

and

make up ofi.; -Zdos; + 3e.di.

the specified connection allows scaling of only one

signal with the same number of scaling levels, which provides the ability to process signals in the scale unit as well as in subsequent transducer blocks

with fewer conversion channels. This provides a reduction in the number of functional connections, a reduction in the volume of equipment, an increase in reliability, and a decrease in the cost of the converter, while maintaining high resolution.

Claims (2)

1. The converter of the angle of rotation of the shaft in a sequence of pulses containing a sine-cosine angle sensor, a scale unit, the outputs of which are connected to one group of sum-difference unit, the outputs which are connected to the inputs of the block of the envelope formers, meanders, the outputs of which are connected to the inputs of the carrier addition block, characterized in that, in order to simplify the converter, a quad switch is inserted into it, the information inputs of which are connected to the outputs of a sine-cosine angle sensor that controls the input of the quad switch is connected to the additional output of the add-on block ЕСА1; their first quad switch is connected to the reference input of the sum-difference block, the second output of the quad switch is to to the input of the scale block, the outputs of the sine-cosmic angle sensor are connected to another group of inputs of the sum-difference block. 2. The converter is l, 1, o t - l and h a and y with the fact that the switch of quadrants contains four keys and an inverter, whose input is the control input of the switch 713: quadrants and connected to the control inputs of the first and second keys, the output of the inverter is connected to the control inputs of the third and fourth keys, the information inputs of the first and fourth, second and third keys the pairs are combined and are the information inputs of the quad switch, the outputs of the first and third, second and fourth keys are pairwise combined and are the outputs of the quad switch.  Fig. 2 s ig. W 4% / h / . (hh  1f Hff fJ-4 t and h 4 u u; a j LL Q ii g; ; u  Rig. 6 7 one i-g LL ( 1L2.8 Compiled by M, Sidorova Editor N, Gunko Tehred L, Oleynsh Corrector I „Muska Order 1225/56. Circulation 902 Subscription VNIIGSh of the USSR State Committee for inventions and discoveries 113035, Moscow., Ra: ttsska nab „, d. 4/5 Production and printing company, Uzhgorod, Proektna St., 4