SU426136A1 - METHOD OF MEASURING THE DEFORMATION OF A MOVING MAGNETIC TAPE - Google Patents
METHOD OF MEASURING THE DEFORMATION OF A MOVING MAGNETIC TAPEInfo
- Publication number
- SU426136A1 SU426136A1 SU1725727A SU1725727A SU426136A1 SU 426136 A1 SU426136 A1 SU 426136A1 SU 1725727 A SU1725727 A SU 1725727A SU 1725727 A SU1725727 A SU 1725727A SU 426136 A1 SU426136 A1 SU 426136A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic tape
- measuring
- deformation
- frequency
- moving magnetic
- Prior art date
Links
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
1one
Изобретение относитс к области приборостроени и может быть использовано дл измерени параметров движени магнитной ленты .The invention relates to the field of instrumentation and can be used to measure the motion parameters of a magnetic tape.
Известный способ измерени деформации магнитной ленты путем одновременной записи пар импульсов с последующим воспроизведением их и измерением между ними временного рассогласовани не позвол ет осуществл ть непрерывные измерени , кроме того, чувствительность его ограничена.The known method for measuring the deformation of a magnetic tape by simultaneously recording pairs of pulses, then reproducing them and measuring the time error between them, does not allow continuous measurements, in addition, its sensitivity is limited.
Цель изобретени - обеспечение возможности непрерывного измерени и повышение точности измерений.The purpose of the invention is to provide the possibility of continuous measurement and increase the accuracy of measurements.
Это достигаетс тем, что записывают сигналы кратной частоты, а после воспроизведени преобразуют частоту одного из полученных сигналов до равенства с частотой другого и измер ют разность фаз между ними.This is achieved by recording multiple-frequency signals, and after reproducing, the frequency of one of the received signals is converted to equal the frequency of the other, and the phase difference between them is measured.
При этом сигналы могут быть записаны различной формы, например гармонический и импульсный, или с различной высотой намагничивани .In this case, the signals can be recorded in various forms, for example, harmonic and pulse, or with different magnetization heights.
На чертеже показано устройство дл осуществлени предлагаемого способа.The drawing shows a device for carrying out the proposed method.
На движущейс в лентопрот жном механизме магнитной ленте 1 двум любыми универсальными головками записи-воспроизведени 2 и 3 с рабочими зазорами 4 и 5, например, различной высоты, записывают гармоническиеOn a magnetic tape 1 moving in a tape mechanism, two universal recording-reproduction heads 2 and 3 with working gaps 4 and 5, for example, of different heights, record harmonic
сигналы частоты F. Частоту магнитной головки с узким рабочим зазором подбирают кратной частоте записываемого сигнала другой головкой пР.the signals of frequency F. The frequency of the magnetic head with a narrow working gap is selected as a multiple of the frequency of the recorded signal by another head nR.
В режиме воспроизведени из общего воспроизведенного сигнала выдел ют сигналы с записанными кратными частотами путем фильтрации в резонансных фильтрах. Затем сигнал с частотой пР преобразуют в сигнал с частотой Р в блоке 6. После этого измер ют разность фаз полученных сигналов фазометром 7, котора пр мо пропорциональна величине абсолютной деформации отрезка магнитной ленты между рабочими зазорами 4 и 5 магнитных головок 2 и 3.In the playback mode, the signals from the total reproduced signal are extracted with recorded multiple frequencies by filtering in resonant filters. A signal with a frequency pR is then converted into a signal with a frequency P in block 6. Thereafter, the phase difference of the received signals is measured with a phase meter 7, which is directly proportional to the absolute deformation of the magnetic tape segment between the working gaps 4 and 5 of the magnetic heads 2 and 3.
Предмет изобретени Subject invention
Способ измерени деформации движущейс магнитной ленты путем одновременной записи двух сигналов с последующим воспроизведением и измерением временного рассогласовани между ними, отличающийс тем, что, с целью обеспечени возможности непрерывного измерени и повышени точности измерений , записывают сигналы кратной частоты , а после воспроизведени преобразуют частоту одного из полученных сигналов до равенства с частотой другого и измер ют разность фаз между ними.A method for measuring the deformation of a moving magnetic tape by simultaneously recording two signals, followed by reproducing and measuring the time difference between them, characterized in that, in order to ensure the possibility of continuous measurement and increase the accuracy of measurements, they record the signals of a multiple frequency, and after reproducing they convert the frequency of one of the received signals to equality with the frequency of the other and measure the phase difference between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1725727A SU426136A1 (en) | 1971-12-20 | 1971-12-20 | METHOD OF MEASURING THE DEFORMATION OF A MOVING MAGNETIC TAPE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1725727A SU426136A1 (en) | 1971-12-20 | 1971-12-20 | METHOD OF MEASURING THE DEFORMATION OF A MOVING MAGNETIC TAPE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU426136A1 true SU426136A1 (en) | 1974-04-30 |
Family
ID=20496469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1725727A SU426136A1 (en) | 1971-12-20 | 1971-12-20 | METHOD OF MEASURING THE DEFORMATION OF A MOVING MAGNETIC TAPE |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU426136A1 (en) |
-
1971
- 1971-12-20 SU SU1725727A patent/SU426136A1/en active
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