SU430321A1 - DEVICE FOR MEASURING THE VIBRATIONS OF THE MOTION VELOCITY OF A MAGNETIC MEDIA - Google Patents

DEVICE FOR MEASURING THE VIBRATIONS OF THE MOTION VELOCITY OF A MAGNETIC MEDIA

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Publication number
SU430321A1
SU430321A1 SU1745656A SU1745656A SU430321A1 SU 430321 A1 SU430321 A1 SU 430321A1 SU 1745656 A SU1745656 A SU 1745656A SU 1745656 A SU1745656 A SU 1745656A SU 430321 A1 SU430321 A1 SU 430321A1
Authority
SU
USSR - Soviet Union
Prior art keywords
measuring
input
vibrations
magnetic media
motion velocity
Prior art date
Application number
SU1745656A
Other languages
Russian (ru)
Original Assignee
А. В. Мачульский
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.)
Filing date
Publication date
Application filed by А. В. Мачульский filed Critical А. В. Мачульский
Priority to SU1745656A priority Critical patent/SU430321A1/en
Application granted granted Critical
Publication of SU430321A1 publication Critical patent/SU430321A1/en

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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Description

1one

Изобретение относитс  к области приборостроени , в частности к устройствам дл  измерени  технических характеристик аппаратуры магнитной записи.The invention relates to the field of instrumentation, in particular, to devices for measuring the technical characteristics of magnetic recording equipment.

Известные устройства дл  измерени  колебаний скорости движени  магнитного носител , содержащие формирователь входного сигнала , демодул тор, схему компенсации, частотные селекторы и индикатор, внос т значительную погрешность, обусловленную паразитной амплитудной модул цией.The known devices for measuring fluctuations in the speed of movement of a magnetic carrier, containing an input driver, a demodulator, a compensation circuit, frequency selectors, and an indicator, introduce significant error due to parasitic amplitude modulation.

Цель изобретени  - уменьшение погрешности измерений.The purpose of the invention is to reduce measurement errors.

Это достигаетс  тем, что предлагаемое устройство снабжено амплитудным детектором, подключенным к входным зажимам устройства , и последовательно с ним соединенными двум  усилител ми с переменным коэффициентом передачи, включенными через амплитудный модул тор, дополнительными формирователем и демодул тором, и фазовращателем , св занным с другим входом схемы компенсации , а также интегратором, выход которого подключен к вторым входам упом нутых усилителей, а вход - к входным зажимам устройства .This is achieved by the fact that the proposed device is equipped with an amplitude detector connected to the input terminals of the device and connected in series with it by two amplifiers with a variable transmission coefficient connected through an amplitude modulator, an additional driver and a demodulator, and a phase shifter connected to another input compensation circuits, as well as an integrator, the output of which is connected to the second inputs of the mentioned amplifiers, and the input to the input terminals of the device.

На чертеже показана блок-схема описУваемого устройства.;The drawing shows a block diagram of a descriptive device .;

Параллельно входу формировател  1 подключены амплитудный детектор 2 и интегратор 3. К выходу детектора 2 подсоединеньусилитель 4 и через амплитудный модул тор b усилитель 6 с регулируемым коэффициентом передачи, вторые входы которых св заны с выходом интегратора 3. К второму входу амплитудного модул тора подключен генератор 7 гармонического сигнала. Выход усилител  6 через дополнительный формирователь 8 и демодул тор 9 соединен с входом фазовращател  10, выход которого подключен к индикатору И помехи и к входу схемы 12 компенсации помехи. Другой вход схемы компенсации св зан с выходом демодул тора 13, вход которого подключен к формирователю 1.Amplitude detector 2 and integrator 3 are connected in parallel with the input of imager 1. Amplifier 4 is connected to the output of detector 2 and an amplitude modulator b with adjustable transmission coefficient, the second inputs of which are connected to the output of integrator 3, is connected to the amplitude modulator b. harmonic signal. The output of the amplifier 6 through an additional driver 8 and the demodulator 9 is connected to the input of the phase shifter 10, the output of which is connected to the And interference indicator and to the input of the interference compensation circuit 12. The other input of the compensation circuit is connected to the output of the demodulator 13, the input of which is connected to the driver 1.

На вход устройства поступает сигнал воспроизведени  на испытываемой аппаратуре магнитной записи измерительной сигналограммы . Формирователь 1 ограничивает амплитуду входного сигнала дл  устранени  вли ни The device receives a playback signal on the test equipment of the magnetic recording of the measuring waveform. Shaper 1 limits the amplitude of the input signal to eliminate the effect of

неравномерности отдачи и паразитной амплитудной модул ции, а демодул тор 13 - демодул цию частотно-модулированного (вследствие колебаний скорости входного сигнала) сигнала. На выходе демодул тора 13, кромеrecoil irregularity and spurious amplitude modulation, and demodulator 13 - demodulation of the frequency-modulated (due to fluctuations in the speed of the input signal) signal. At the output of the demodulator torus 13, except

полезного сигнала, имеют место помехи, обусловленные паразитной амплитудной модул цией и неравномерностью отдачи, так как формирователь 1 лишь ослабл ет их вли ние. Амплитудный детектор 2 обеспечивает получение огибающей паразитной амплитудной моof a useful signal, interference occurs due to parasitic amplitude modulation and uneven recoil, since shaper 1 only weakens their influence. Amplitude detector 2 provides a parasitic amplitude amplitude envelope

SU1745656A 1972-02-07 1972-02-07 DEVICE FOR MEASURING THE VIBRATIONS OF THE MOTION VELOCITY OF A MAGNETIC MEDIA SU430321A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1745656A SU430321A1 (en) 1972-02-07 1972-02-07 DEVICE FOR MEASURING THE VIBRATIONS OF THE MOTION VELOCITY OF A MAGNETIC MEDIA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1745656A SU430321A1 (en) 1972-02-07 1972-02-07 DEVICE FOR MEASURING THE VIBRATIONS OF THE MOTION VELOCITY OF A MAGNETIC MEDIA

Publications (1)

Publication Number Publication Date
SU430321A1 true SU430321A1 (en) 1974-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1745656A SU430321A1 (en) 1972-02-07 1972-02-07 DEVICE FOR MEASURING THE VIBRATIONS OF THE MOTION VELOCITY OF A MAGNETIC MEDIA

Country Status (1)

Country Link
SU (1) SU430321A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5247254A (en) * 1990-12-21 1993-09-21 Maxtor Corporation Data recording system incorporating flaw detection circuitry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5247254A (en) * 1990-12-21 1993-09-21 Maxtor Corporation Data recording system incorporating flaw detection circuitry

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