TRANSFORMATION OF MODAL AND MEDIAN VALUES OF A FUZZY SIGNAL BY A LINEAR DYNAMIC SYSTEM

Authors

  • Vladimir L. Khatskevich Russian Air Force Military Educational and Scientific Center of the «N. E. Zhukovsky and Yu. A. Gagarin Air Force Academy»
  • Natalia A. Kaplieva Voronezh State University image/svg+xml

DOI:

https://doi.org/10.17308/sait/1995-5499/2026/1/26-38

Keywords:

linear dynamic systems, fuzzy differential equations, modal values of fuzzy signals, median values of fuzzy signals

Abstract

A formula is established that relates the modal values of the input and output fuzzy signals for a linear dynamic system described by a high-order fuzzy linear differential equation under the assumption that the input fuzzy signal is of the (L-R) type. Under the specified conditions, formulas were obtained for determining the median values (and median intervals) of the input and output fuzzy signals of a linear dynamic system, as well as a relationship linking the powers of fuzzy signals at the input and output of a linear dynamic system. Fuzzy differential equation methods and the Green’s function method for the corresponding real-valued differential problem are used. Two models of radio circuits with fuzzy input signals of the (L-R) type are considered as applications.

Author Biographies

  • Vladimir L. Khatskevich, Russian Air Force Military Educational and Scientific Center of the «N. E. Zhukovsky and Yu. A. Gagarin Air Force Academy»

    DSc in Technical Sciences, Professor

  • Natalia A. Kaplieva, Voronezh State University

    PhD in Physics and Mathematics, Associate Professor

References

1. Вентцель Е. С. Теория случайных процессов и их инженерные приложения / Е. С. Вентцель, Л. А. Овчаров. – М.: Кнорус, 2014.

2. Аверкин А. Н. Нечеткие множества в моделях управления и искусственного интеллекта / А. Н. Аверкин. – М. : Наука, 1986. – 312 с.

3. Puri M. Differentials of fuzzy functions / M. Puri, D. Ralescu // Journal of Mathematical Analysis and Applications. – 1983. – Vol. 91, No 3. – P. 552–558.

4. Seikkala S. On the fuzzy initial value problem / S. Seikkala // Fuzzy Sets and Systems. – 1987. – Vol. 24, No 3. – P. 319–330.

5. Buckley J. J. Fuzzy initial value problem for Nth-order linear differential equations / J. J. Buckley, T. Feuring // Fuzzy Sets and Systems. – 2001. – Vol. 121, No 2. – P. 247–255.

6. Barnab’as Bede Generalizations of the differentiability of fuzzy-number-valued functions with applications to fuzzy differential equations Bede / Barnab’as, G. Gal. Sorin // Fuzzy Sets and Systems. – 2005. – V. 147. – P. 581–599.

7. Khastan A. New Results on Multiple Solutions for Nth-Order Fuzzy Differential Equations under Generalized Differentiability / A. Khastan, F. Bahrami, K. Ivaz // Boundary Value Problems. – 2009. – No 7. – P. 1–3.

8. Allahviranloo T. A new method for solving fuzzy linear differential equations / T. Allahviranloo, S. Abbasbandy, S. Salahshour, A. Hakimzadeh // Soft Computing. – 2011. – V. 92. – P. 181–197.

9. Amen Sardar G. Approximate Solution of Higher Order Fuzzy Initial Value Problems of Ordinary Differential Equations Using Bezier Curve Representation / Sardar G. Amen, Ali F. Jameel, Abdul M. Yaakob // Mathematics and Statistics. – 2021. – Vol. 9, No 4. – P. 431–438.

10. Alavi S. M. A method for second-order linear fuzzy two-point boundary value problems based on the Hukuhara differentiability / S. M. Alavi // Computational Methods for Differential Equations. – 2023. – Vol. 11, No 3. – P. 576–588.

11. Хацкевич В. Л. Метод функций Грина в задаче о преобразовании нечеткого сигнала линейной динамической системой / В. Л. Хацкевич // Автоматика и телемеханика. – 2025. – № 10. – С. 42–65.

12. Хацкевич В. Л. Непрерывные процессы с нечеткими состояниями и их приложения / В. Л. Хацкевич // Автоматика и телемеханика. – 2023. – № 8. – С. 43–60.

13. Dubois D. The mean value of fuzzy number / D. Dubois, H. Prade // Fuzzy sets and systems. – 1987. – V. 24, No 3. – P. 279–300.

14. Матвеев М. Г. Дефаззификация решений дифференциальных уравнений с нечеткими параметрами / М. Г. Матвеев [и др.] // Вестник ВГУ. Серия: Системный анализ и информационные технологии, Воронеж. – 2011. – № 1. – С. 179–183.

15. Красносельский М. А. Нелинейные почти периодические колебания / М. А. Красносельский, В. Ш. Бурд, Ю. С. Колесов. – М. : Наука, 1970. – 351 с.

16. Пегат А. Нечеткое моделирование и управление / А. Пегат. – М. : БИНОМ, 2015. – 801 с.

17. Гнеденко Б. В. Курс теории вероятностей / Б. В. Гнеденко. – М. : Ленард, 2024. – 456 с.

18. Bodjanova S. Median value and median interval of a fuzzy number / S. Bodjanova // Information Sciences. – 2005. – V. 172(1). – P. 73–89.

19. Перов А. И. Об ограниченных решениях обыкновенных нелинейных дифференциальных уравнений n-го порядка / А. И. Перов // Дифференциальные уравнения. – 2010. – Т. 46, № 9. – С. 1228–1244.

20. Ивченко Г. И. Математическая статистика / Г. И. Ивченко, Ю. И. Медведев. – М. : Книжный дом ЛИБРОКОМ, 2019. – 252 с.

21. Баскаков С. И. Радиотехнические цепи и сигналы / С. И. Баскаков. – М. : Ленард, 2024. – 528 с. CONFLICT OF INTEREST

Published

2026-03-31

Issue

Section

Mathematical Methods of System Analysis, Management and Modelling

How to Cite

Khatskevich, V. L., & Kaplieva, N. A. (2026). TRANSFORMATION OF MODAL AND MEDIAN VALUES OF A FUZZY SIGNAL BY A LINEAR DYNAMIC SYSTEM. Proceedings of Voronezh State University. Series: Systems Analysis and Information Technologies, 1, 26-38. https://doi.org/10.17308/sait/1995-5499/2026/1/26-38