PL402801A1 - Method for determining the effective value of vibration velocity - Google Patents

Method for determining the effective value of vibration velocity

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Publication number
PL402801A1
PL402801A1 PL402801A PL40280113A PL402801A1 PL 402801 A1 PL402801 A1 PL 402801A1 PL 402801 A PL402801 A PL 402801A PL 40280113 A PL40280113 A PL 40280113A PL 402801 A1 PL402801 A1 PL 402801A1
Authority
PL
Poland
Prior art keywords
vibration
vibration velocity
determining
signal
signals
Prior art date
Application number
PL402801A
Other languages
Polish (pl)
Inventor
Pawel Kepski
Bartłomiej Greń
Original Assignee
Famur Institute Spólka Z Ograniczona Odpowiedzialnoscia
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 Famur Institute Spólka Z Ograniczona Odpowiedzialnoscia filed Critical Famur Institute Spólka Z Ograniczona Odpowiedzialnoscia
Priority to PL402801A priority Critical patent/PL402801A1/en
Publication of PL402801A1 publication Critical patent/PL402801A1/en

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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

Sposób wyznaczania wartosci skutecznej predkosci drgan charakteryzuje sie tym, ze rejestruje sie przy pomocy czujnika (2) sygnaly (3) przyspieszenia drgan obiektu (1) poddawanego diagnozie stanu technicznego. Zebrane sygnaly po konwersji na postac cyfrowa przetwarza sie w urzadzeniu przeksztalcajacym (4) w nastepujacych po sobie krokach. Najpierw modyfikuje sie zebrane sygnaly przyspieszenia drgan przez znana funkcje okna czasowego. Nastepnie uzupelnia sie znana metoda liczebnosc zarejestrowanych próbek sygnalu do liczebnosci bedacej potega liczby dwa poprzez dopisanie zer na koncu i poczatku sygnalu. Dalej modyfikuje sie przeksztalcany sygnal przez wyznaczenie widma przyspieszen drgan, korzystnie z wykorzystaniem znanego algorytmu FFT. Potem, na podstawie tak otrzymanego widma przyspieszen drgan, modyfikuje sie przeksztalcany sygnal w dziedzinie czestotliwosci dla wyznaczenia widma czestotliwosciowego predkosci drgan. Na koniec na bazie widma czestotliwosciowego predkosci drgan nastepuje wyliczenie wartosci skutecznej predkosci drgan przeksztalcanego sygnalu.The method of determining the value of the effective vibration velocity is characterized by the fact that the sensor (2) signals (3) the acceleration of vibration of the object (1) subjected to the diagnosis of the technical condition is registered. The collected signals after conversion into digital form are processed in the transforming device (4) in successive steps. First, the collected vibration acceleration signals are modified by a known time window function. Then the known method of the number of registered signal samples is supplemented to the number being the power of two by appending zeros at the end and beginning of the signal. The transformed signal is further modified by determining the vibration acceleration spectrum, preferably using the known FFT algorithm. Then, based on the vibration acceleration spectrum obtained in this way, the transformed signal in the frequency domain is modified to determine the frequency spectrum of the vibration velocity. Finally, based on the frequency spectrum of the vibration velocity, the value of the effective vibration velocity of the converted signal is calculated.

PL402801A 2013-02-15 2013-02-15 Method for determining the effective value of vibration velocity PL402801A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL402801A PL402801A1 (en) 2013-02-15 2013-02-15 Method for determining the effective value of vibration velocity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL402801A PL402801A1 (en) 2013-02-15 2013-02-15 Method for determining the effective value of vibration velocity

Publications (1)

Publication Number Publication Date
PL402801A1 true PL402801A1 (en) 2014-03-03

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ID=50158542

Family Applications (1)

Application Number Title Priority Date Filing Date
PL402801A PL402801A1 (en) 2013-02-15 2013-02-15 Method for determining the effective value of vibration velocity

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PL (1) PL402801A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL423382A1 (en) * 2017-11-07 2019-05-20 Instytut Transp Samochodowego Method for measuring frequency of vibrations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL423382A1 (en) * 2017-11-07 2019-05-20 Instytut Transp Samochodowego Method for measuring frequency of vibrations

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