RU96100261A - METHOD FOR MEASURING THE PERIODIC LAW OF VIBRATING SURFACE MOTION - Google Patents

METHOD FOR MEASURING THE PERIODIC LAW OF VIBRATING SURFACE MOTION

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Publication number
RU96100261A
RU96100261A RU96100261/28A RU96100261A RU96100261A RU 96100261 A RU96100261 A RU 96100261A RU 96100261/28 A RU96100261/28 A RU 96100261/28A RU 96100261 A RU96100261 A RU 96100261A RU 96100261 A RU96100261 A RU 96100261A
Authority
RU
Russia
Prior art keywords
points
zero level
vibrating surface
measuring
ldw
Prior art date
Application number
RU96100261/28A
Other languages
Russian (ru)
Other versions
RU2101686C1 (en
Inventor
В.Д. Захарченко
Original Assignee
Волгоградский государственный университет
Filing date
Publication date
Application filed by Волгоградский государственный университет filed Critical Волгоградский государственный университет
Priority to RU96100261A priority Critical patent/RU2101686C1/en
Priority claimed from RU96100261A external-priority patent/RU2101686C1/en
Application granted granted Critical
Publication of RU2101686C1 publication Critical patent/RU2101686C1/en
Publication of RU96100261A publication Critical patent/RU96100261A/en

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Claims (1)

Способ измерения периодического закона движения вибрирующей поверхности с помощью лазерного доплеровского виброметра, включающий формирование массива точек нулевого уровня, отличающийся тем, что производится изменение начальной фазы сигнала ЛДВ по ступенчатому закону от 0 до 2π за N периодов вибраций, в каждом периоде фиксируются точки пересечения нулевого уровня электрическим сигналом ЛДВ и в пределах каждого интервала между соседними пересечениями нулевого уровня производится пошаговый расчет значений z(t) в этих точках по формуле
z(t k+1 m ) = z(t k m )+Δφ/A, где t k m - абсциссы точек пересечения нулевого уровня сигналом ЛДВ на k-м периоде вибраций;
z(t k m ) - значения функции движения вибрирующей поверхности в точках t k m ;
Δφ = 2π/N - величина фазового сдвига между сигналами ЛДВ в соседних периодах;
А - константа, определяемая конструкцией прибора,
а на границах интервалов результаты сшиваются с учетом непрерывности.
A method of measuring the periodic law of motion of a vibrating surface using a laser Doppler vibrometer, including the formation of an array of zero level points, characterized in that the initial phase of the LDW signal is changed in accordance with the step law from 0 to 2π for N periods of vibration, in each period, the zero level intersection points are fixed by the electric signal LDV and within each interval between adjacent intersections of the zero level, step-by-step calculation of z (t) values at these points is carried out according to the formula
z (t k + 1 m ) = z (t k m ) + Δφ / A, where t k m - abscissas of the intersection points of the zero level by the LDW signal at the kth vibration period;
z (t k m ) are the values of the motion function of the vibrating surface at points t k m ;
Δφ = 2π / N is the magnitude of the phase shift between the LDW signals in neighboring periods;
A is a constant determined by the design of the device,
and at the boundaries of the intervals, the results are stitched together with continuity.
RU96100261A 1996-01-05 1996-01-05 Method measuring periodic law of motion of vibrating surfaces RU2101686C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96100261A RU2101686C1 (en) 1996-01-05 1996-01-05 Method measuring periodic law of motion of vibrating surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96100261A RU2101686C1 (en) 1996-01-05 1996-01-05 Method measuring periodic law of motion of vibrating surfaces

Publications (2)

Publication Number Publication Date
RU2101686C1 RU2101686C1 (en) 1998-01-10
RU96100261A true RU96100261A (en) 1998-01-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU96100261A RU2101686C1 (en) 1996-01-05 1996-01-05 Method measuring periodic law of motion of vibrating surfaces

Country Status (1)

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RU (1) RU2101686C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052417A1 (en) * 2010-11-24 2012-05-24 Daimler Ag Method and insulating element for reducing the natural vibrations of a component
US8997920B2 (en) 2010-11-24 2015-04-07 Faist Chemtec Gmbh Method and damping element for reducing the natural vibration of a component

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