novtexmechМехатроника, автоматизация, управлениеMekhatronika, Avtomatizatsiya, Upravlenie1684-64272619-1253Commercial Publisher «New Technologies»10.17587/mau.27.13-20novtexmech-1912Research ArticleСИСТЕМНЫЙ АНАЛИЗ, УПРАВЛЕНИЕ И ОБРАБОТКА ИНФОРМАЦИИSYSTEM ANALYSIS, CONTROL AND INFORMATION PROCESSINGМониторинг неисправностей мостов на основе интервальных оценок дисперсии помехи вибрационного зашумленного сигналаMonitoring of Bridge Malfunctions Based on Interval Estimates of the Variance of the Noise of Vibration Noisy SignalsАлиевТ. А.AlievT. A.

Т. А. Алиев, д-р техн. наук, проф., советник НАНА

Баку

T. A. Aliev, Dr. Tech. Sc., Professor, Advisors of ANAS

Baku, AZ1001

Baku, AZ1073

Baku, AZ1141

 

telmancyber@gmail.comМусаеваН. Ф.MusaevaN. F.

Н. Ф. Мусаева, д-р техн. наук, проф., проф. кафедры

Баку

N. F. Musaeva, Dr. Tech. Sc., Professor

Baku, AZ1073

Baku, AZ1141

 

musanaila@gmail.comНациональная академия наук Азербайджана; Азербайджанский университет архитектуры и строительства; Институт систем управленияАзербайджанNational Academy of Sciences; Azerbaijan University of Architecture and Construction; Institute of Control SystemsAzerbaijanАзербайджанский университет архитектуры и строительства; Институт систем управленияРоссияAzerbaijan University of Architecture and Construction; Institute of Control SystemsRussian Federation2026170120262711320Copyright © Commercial Publisher «New Technologies», 20262026Commercial Publisher «New Technologies»Commercial Publisher «New Technologies»https://mech.novtex.ru/jour/about/submissions#copyrightNoticehttps://mech.novtex.ru/jour/article/view/1912

Рассмотрены особенности мостов. Отмечено, что в процессе эксплуатации мосты подвергаются влиянию внешних факторов, например, изменению температуры, порывам ветра, гололеду, ливневым дождям, сейсмическим и оползневым воздействиям и др. В результате в конструкциях мостов появляются повреждения, коррозия, неисправности и т. д. Поэтому создаются системы мониторинга технического состояния моста. Однако эти системы мониторинга не дают возможность выявить латентный период возникновения неисправности в конструкции моста и проследить динамику ее развития. Отмечено, что образование даже самых незначительных неисправностей в конструкциях моста сопровождается появлением в вибрационном сигнале аддитивной помехи, коррелированной с полезным сигналом. Характеристики этой помехи несут в себе информацию об образовании дефектов и неисправностей в конструкциях моста. Однако помеху невозможно выделить из зашумленного вибрационного сигнала, чтобы вычислить оценки этих характеристик традиционными методами. Поэтому разработаны алгоритмы вычисления характеристик помехи зашумленного вибрационного сигнала. Предложены технологии раннего обнаружения неисправностей моста, а также анализ динамики их развития по интервальным оценкам дисперсии помехи. Составлена матрица и модель неисправного технического состояния моста. Для контроля динамики развития неисправностей составлены доверительные интервалы для оценок дисперсии помехи зашумленного вибрационного сигнала в различные моменты времени. Установлено соответствие между каждым значением доверительного интервала дисперсии помехи зашумленного вибрационного сигнала и степенью развития неисправности или дефекта мостового сооружения. Для каждой верхней границы доверительного интервала дисперсии помехи вычислено отношение дисперсии помехи к дисперсии полезного сигнала, и определена динамика развития степени опасности. Показано, что применение разработанных алгоритмов и технологий в системах мониторинга позволят сигнализировать о зарождении неисправности и дефекта в скрытом периоде их появления, что обеспечивает безопасность, надежность и эффективность функционирования мостового сооружения и уменьшает риск возможной аварии.

The specific features of bridges are considered. It is noted that in the process of operation bridges are exposed to the influence of external factors, such as temperature changes, wind gusts, ice, heavy rain, seismic and landslide impacts, etc., which cause damage, corrosion, malfunction, etc. in bridge structures. Therefore, systems for monitoring the technical condition of bridges are developed. However, these monitoring systems do not allow to reveal the latent period of occurrence of a malfunction in the bridge structure and trace the dynamics of its development. It is noted that the formation of even the most insignificant faults in the bridge structures is accompanied by the emergence in the vibration signal of an additive noise correlated with the useful signal. Characteristics of this noise carry information about the formation of defects and malfunctions in the bridge structures. However, the noise cannot be isolated from the noisy vibration signal in order to calculate estimates of these characteristics using traditional methods. Therefore, algorithms for calculating the characteristics of the noise characteristics of the noisy vibration signal are developed. Technologies for early detection of bridge malfunctions are proposed, as well as analysis of the dynamics of their development using interval estimates of the noise variance. The matrix and model of the faulty technical condition of bridges are built. To control the dynamics of malfunction development, confidence intervals for the estimates of the variance of the noise of noisy vibration signal at different time instants are compiled. The correspondence between each value of the confidence interval of the variance of the noise of the noisy vibration signal and the degree of development of the malfunction or defect of the bridge structure is established. For each upper boundary of the confidence interval of the noise variance, the ratio of the noise variance to the variance of the useful signal is calculated, and the dynamics of the hazard degree development is determined. It is shown that using the developed algorithms and technologies in monitoring systems will make it possible to signal the emergence of malfunctions and defects in the latent period of their inception, which ensures safety, reliability and efficiency of the operation of bridge structures and reduces the risk of possible accidents.

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The authors declare that there are no conflicts of interest present.