SU932201A1 - Device for converting displacement to time interval - Google Patents

Device for converting displacement to time interval Download PDF

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Publication number
SU932201A1
SU932201A1 SU802997033A SU2997033A SU932201A1 SU 932201 A1 SU932201 A1 SU 932201A1 SU 802997033 A SU802997033 A SU 802997033A SU 2997033 A SU2997033 A SU 2997033A SU 932201 A1 SU932201 A1 SU 932201A1
Authority
SU
USSR - Soviet Union
Prior art keywords
time interval
measuring
converting
windings
amplifiers
Prior art date
Application number
SU802997033A
Other languages
Russian (ru)
Inventor
Николай Евгеньевич Конюхов
Александр Александрович Курицкий
Original Assignee
Куйбышевский Ордена Трудового Красного Знамени Авиационный Институт Им.Акад.С.П.Королева
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Куйбышевский Ордена Трудового Красного Знамени Авиационный Институт Им.Акад.С.П.Королева filed Critical Куйбышевский Ордена Трудового Красного Знамени Авиационный Институт Им.Акад.С.П.Королева
Priority to SU802997033A priority Critical patent/SU932201A1/en
Application granted granted Critical
Publication of SU932201A1 publication Critical patent/SU932201A1/en

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Description

The invention relates to information-measuring technology and automation and can be used in devices for converting movement into code, in digital monitoring and control systems, working in conjunction with digital computers. A device for converting movement into a time interval is known; a1a transformer converter with an excitation winding and a measuring winding, a periodic signal generator connected to the excitation winding, and a comparator unit, one of the inputs of which is connected to the measuring winding of the joint venture. The conversion accuracy of such a device is determined by the degree of transmission of the magnetic circuit. Exposure to temperature causes a change in the geometrical dimensions of the magnetic circuit, which leads to a violation of the matching condition and, consequently, to a reduction in the conversion accuracy, i The closest to the proposed technical essence is a device for converting movement into a time interval containing a transformer converter with two excitation windings and. two measuring windings, made in the form of two unmatched magnetic circuits separated by a non-magnetic gasket, each of which consists of three coaxially arranged cylinders, a generator of two periodic signals of a triangular shape with a shift. in 1/4 period, two blocks of comparatives, the first of which is connected to the outputs Ql- generator. A disadvantage of the known device is the inaccuracy of converting linear signals with a transformer converter.
393
The purpose of the invention is to improve the accuracy of the conversion.
The goal is achieved in that the device is equipped with two adjustable amplifiers connected by signal inputs to a generator of two periodic signals, and outputs to windings of the excitation winding and a second comparator unit, a reference voltage source connected to the non-inverting inputs of two differential amplifiers connected to control the inputs of adjustable amplifiers, and two rectifiers through which the measuring windings of the transformer converter are connected to the inverting inputs diff differential amplifiers.
Figure 1 shows a functional diagram of an apparatus for converting a movement into a time interval; FIG. 2 shows timing diagrams explaining the principle of operation of the device.
The device consists of a transformer converter, made in the form of mismatched magnetic cores 1 and 2, separated by a non-magnetic gasket 3, and containing windings and 5 excitation and measuring windings 6 and 7, mounted on the rod 8, generator 9 Two periodic signals of a triangular shape connected by outputs the inputs of adjustable amplifiers 10 and 11, blocks 12 and 13 of the comparison, whose inputs are connected respectively to the outputs of the generator 9 of two periodic signals and to the outputs of adjustable amplifiers 10 and 11, you lines 1 and lij, through which the measuring rotor windings 6 and 7 of the transformer converter are connected to the inverting inputs of differential amplifiers 16 and 17, the non-inverting inputs of which are connected to the source 18 of the reference voltage; eni
A device for converting a variable into a time interval operates as follows.
The exciter windings 4 and 5 are oscillators. Two triangular periodic signals are fed through adjustable amplifiers 10 and 11. They are voltage shifted in phase by the l / t period (Fig. 2a, b}.) If rod 8 is in the neutral position, The voltages of measuring 6MotoK 6 and 7 are equal in amplitude and equal to the output voltage of differential amplifiers 16 and 17, which maintain equal gains of adjustable amplifiers 10 and 11. At the same time, the pulse sequences at the outputs of the comparison blocks 12 and 13 coincide and are temporarily generated the interval is zero (phi 2g, amp.0) When the rod 8 is displaced, for example, to the right, the voltage amplitude of the measuring winding 6 increases, and the measuring winding 7 decreases by an amount proportional to the displacement X. The voltage of the differential amplifiers 16 and 17 varies The gains of the monitored amplifiers 10 and 11 are maintained in such a way that the amplitudes of the voltages of the measuring windings 7 and 6 are maintained equal. The moments of equality of the instantaneous values of the excitation voltage from the adjustable amplifiers 10 and 11 are shifted relative to of the porous pulse from the comparison unit 12, and between the pulses of the comparison blocks 12 and 13, a time interval 4t is formed, defined by the ratio
where T is the period of the generator signal 9, S is the sensitivity of the transformer displacement transducer, UQ is the magnitude of the reference voltage
source 18.
The direction of movement of the rod 8 from the neutral position is determined by the sequence of pulses from blocks 12 and 13 of the comparison.
The invention makes it possible to compare signals having a high degree of linearity, which makes it possible to improve the accuracy of the conversion of movement into a time interval.

Claims (2)

1. USSR Author's Certificate If i 39009, cl. G, 01 B 7/0., 1972.
2.Avtorskoye, certificate of the USSR in application No. 288078 / 18-28,
, cl. G 91 B 7/02, 1972. (prototype).
SU802997033A 1980-10-21 1980-10-21 Device for converting displacement to time interval SU932201A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU802997033A SU932201A1 (en) 1980-10-21 1980-10-21 Device for converting displacement to time interval

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU802997033A SU932201A1 (en) 1980-10-21 1980-10-21 Device for converting displacement to time interval

Publications (1)

Publication Number Publication Date
SU932201A1 true SU932201A1 (en) 1982-05-30

Family

ID=20923388

Family Applications (1)

Application Number Title Priority Date Filing Date
SU802997033A SU932201A1 (en) 1980-10-21 1980-10-21 Device for converting displacement to time interval

Country Status (1)

Country Link
SU (1) SU932201A1 (en)

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