SU698112A1

SU698112A1 - Phase shift amplifying device

Info

Publication number: SU698112A1
Application number: SU772475253A
Authority: SU
Inventors: Александр Васильевич Красилов
Original assignee: Рижское Высшее Военное Командное Краснознаменное Училище Им. Маршала Советского Союза Бирюзова С.С.
Priority date: 1977-04-07
Filing date: 1977-04-07
Publication date: 1979-11-15

Description

(54) УСТРОЙСТВО УСИЛЕНИЯ ФАЗОВЫХ СДВШЧЖ(54) DEVICE FOR ENHANCING PHASE ADHESIVES

1one

Изобретение относитс к устройствам дл преобразовани параметров электрических колебаний и может использоватьс дл усилени фазовых сдвигов и фазовых изменений одного гармонического сигнала по отношению к другому, принимаемому за опорный.The invention relates to devices for converting electrical oscillation parameters and can be used to amplify phase shifts and phase changes of one harmonic signal with respect to another, taken as a reference.

Известен усилитель фазовых сдвигов , содержащий фазовый модул тор, два фазовых детектора, один из которых подключен к источнику опорного напр жени и входу фазового модул тора , а другой - к источнику опорного напр жени и выходу фазоаого модул тора, масштабный преобразователь и блок вычитани 1,A phase shift amplifier comprising a phase modulator, two phase detectors, one of which is connected to a reference voltage source and an input of a phase modulator, and the other to a reference voltage source and a phase modulator output, a scale converter and a subtractor 1,

Однако известный усилитель фазовых сдвигов имеет небольшой коэффициент усилени .However, the known phase shift amplifier has a small gain.

Наиболее близким к предлагаемому вл етс устройство усилени фазовьк сдвигов, содержащее последовательно с зединенные источник опорного напр жени , фазовращатель, фазовый детектор , фильтр нижних частот и фазовый модул тор, вторым входом соединенный с вторым входом фазового детектора Closest to the present invention is a phase shift gain device comprising in series with a connected reference source, phase shifter, phase detector, low pass filter and phase modulator, a second input connected to the second input of the phase detector

Однако известное устройство усилени имеет малый коэффициент усилени усиливаемых фазовых изменений.However, the prior art gain device has a low gain factor for amplified phase changes.

уменьшающийс с повышением частоты этих изменений, а также низкое быст юдействие , обусловленное большой посто нной времени фильтра нижних частот.decreasing with an increase in the frequency of these changes, as well as a low speed action due to the large time constant of the low-pass filter.

Цель изобретени - повы1ление коэффициента усилени усиливаемых фазовых изменений.The purpose of the invention is to increase the gain of the amplified phase changes.

Дл этого в известном устройстве To do this in a known device

10 усилени фазовых сдвигов, содержащем последовательно соединенные источник опорного напр жени , фазовращатель, фазовый детектор, фильтр нижних частот и фазовый модул тор, вторым 10 amplification of phase shifts, containing in series connected reference voltage source, phase shifter, phase detector, low pass filter and phase modulator, second

15 входом соединенный, с вторым входом фазового детектора, между выходом источника опорного напр жени и вторыми входами фазовьк модул тора и детектора включены последовательно 15 input connected to the second input of the phase detector between the output of the reference voltage source and the second inputs of the phase modulator and detector are connected in series

20 потенциометр и усилитель-ограничитель , другой вход которого вл етс входом устройства.20 a potentiometer and a limiter amplifier, the other input of which is the device input.

На чертеже представлена структурна электрическа схема устройства The drawing shows a structural electrical circuit device

5 усилени фазовых сдвигов.5 enhance phase shifts.

Предложенное устройство содержит The proposed device contains

последовательно соединенные источнмк 1 опорного напр жени , фазовращатель 2, фазовый детектор 3, Фильтр series-connected voltage source 1, phase shifter 2, phase detector 3, Filter

Claims

30 4 low-pass and phase modulator 5, as well as amplifier-limiter 6 and potentiometer 7. One of the inputs of amplifier-limiting 6 is the input of the device. The phase shift enhancement device operates as follows. The source 1 of the reference voltage, the phase shifter 2, the phase detector 3, the low-pass filter 4 and the phase modulator 5 are functionally interconnected and operate, as well as in the known device 2. Amplifier limiter b, connected by its inverting input via potentiometer 7 to source 1 of the reference voltage, provides a preliminary almost instantaneous amplification of phase shifts and phase changes in a wide frequency range. This is an ax; it is described as follows. in a way. The harmonic vibrations from the device input and the reference oscillations from the voltage source 1 are fed to the limiting amplifier b in antiphase, since the direct and inverting inputs of this amplifier are used. When the phase angle of the electrical oscillation of the input signal deviates from zero value by fp, the phase angle of the voltage at the output of the amplifier is limited by the value determined by the known mathematical expression Vc S1 p l Fs + VOP SI p ac Df - "ct V cosAcf. + V.nCosSC-VcSinAtfc "x -555lf-7p where DC and Uon are the amplitudes of the oscillations of the inputs of the amplifier-limiter 6 from the input and reference sources, respectively. For small values of Atfpt, therefore expression (1) can be rewritten as (2) From expression (2) it follows that the phase shift gain Aifg can be adjusted by the value of U For Uj,, Uon the gain can be theoretically as large as desired. However, this will reduce the amplitude of the output oscillations of the amplifier-limiter 6. If it is necessary that this amplitude be the same as the amplitude of the signal arriving at its input, it is necessary to set using potentiometer 7. where K is the amplification factor of the amplitude of the amplitude of the amplitude In this case, the dsrs Thus, the proposed device has a K times greater gain small phase shifts compared with the known device 2. The limiting amplifier limiting function b is necessary to ensure a constant amplitude of its output oscillations at different values of dsr. The expansion of the frequency range amplified by the proposed device input signals is explained by the low inertia of the pre-amplification elements: amplifier, limiter 6 and potentiometer A 7. The invention A phase shift gain device comprising a series-connected reference voltage source, a phase shifter, a phase detector, a low-pass filter and a phase modulator, the second input connected to the second input of the phase detector, characterized in that in order to increase the gain amplified phase changes, between, the output of the reference voltage source and the second inputs of the phase modulator and detector are connected in series with a potentiometer and amplifier-limiter, another input cat This is the device input. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 496652, cl. H 03 B 3/04, H 03 H 7/18, 1974.

2. USSR author's certificate №178860, cl. H 03 F 3/02, 1966 (prototype).

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