Imitation models of aircraft hydraulic units with account for typical faults


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Abstract

А method based on comparing oscilloscope patterns of operational parameters with reference curves is one of the most promising methods of diagnosing hydraulic systems among the existing ones. Its implementation does not allow accurate localization of the faulty unit in the system and quantitative estimation of the magnitude of the fault. To eliminate these shortcomings, it is advisable to use simulation models of hydraulic units, taking into account typical faults of a hydraulic system. Their use makes it possible to evaluate the effect of a particular malfunction on the change of dynamic parameters at the stage of mathematical modeling. As a result of the analysis of statistical information and literary sources, characteristic faults of hydraulic systems are identified. Their causes and the impact on the operation of hydraulic units are examined. Simulation models of units taking into account typical faults are described in the Matlab / Simscape software package. They are implemented using a typical hydraulic system as an example. Dynamic characteristics of a hydraulic system in a healthy condition and those of a system with one of the characteristic faults are compared.

About the authors

A. M. Gareyev

Samara National Research University

Author for correspondence.
Email: gareyev@ssau.ru

Candidate of Science (Engineering)
Associate Professor of the Department of Aircraft Maintenance

Russian Federation

I. A. Popelnyuk

Samara National Research University

Email: iap@ssau.ru

Postgraduate Student

Russian Federation

D. M. Stadnik

Samara National Research University

Email: sdm-63@bk.ru

Candidate of Science (Engineering)
Senior Lecturer of the Department of Power Plant Automatic Systems

Russian Federation

References

  1. Shumilov I.S. Sistemy upravleniya rulyami samoletov [Aircraft steering systems: study guide]. Moscow: Moscow State Technical University Publ., 2009. 469 p.
  2. Nikitin O.F. Ob"emnye gidravlicheskie i pnevmaticheskie privody [Hydrostatic hydraulic and pneumatic drives]. Moscow: Mashinostroenie Publ., 1981. 269 p.
  3. Sapozhnikov V.M. Montazh, kontrol' i ispytaniya truboprovodnykh kommunikatsiy gidrogazovykh sistem letatel'nykh apparatov [Installation, control and testing of pipeline communications of aircraft hydraulic gas systems]. Moscow: Mashinostroenie Publ., 1996. 160 p.
  4. Nikitin O.F. Nadezhnost', diagnostika i ehkspluataciya gidroprivoda mobil'nyh ob"ektov [Reliability, diagnostics and operation of hydraulic drives of mobile objects]. Moscow: Moscow State Technical University Publ., 2007. 312 p.
  5. Gamynin N.S. Osnovy sledyashchego gidravlicheskogo privoda [Basics of a hydraulic servo-drive]. Moscow: Oborongiz Publ., 1969. 293 p.
  6. Nikitin G.A. Shchelevye i labirintnye uplotneniya gidroagregatov [Groove and labyrinth seals of hydraulic units]. Moscow: Mashinostroenie Publ., 1982. 135 p.
  7. Komarov A.A. Nadezhnost' gidravlicheskih system [Reliability of hydraulic systems]. Moscow: Mashinostroenie Publ., 1969. 236 p.
  8. Kondakov L.A. Rabochie zhidkosti i uplotneniya gidravlicheskih sistem [Hydraulic fluids and seals]. Moscow: Mashinostroenie Publ., 1982. 216 p.
  9. Tovarnye nefteprodukty. Svoystva i primenenie: spravochnik / pod red. V.M. Shkol'nikova [Commercial oil products. Properties and application: Directory. 2nd revised edition / Ed. byV.M. Shkolnikova]. Moscow: Khimiya Publ., 1978. 470 p.
  10. Shishkov I.N. Aviacionnye goryuche-smazochnye materialy i special'nye zhidkosti [Aviation fuel and lubrication materials and special liquids]. Moscow: Transport Publ., 1979. 247 p.
  11. Kononov A.A., Kobzov D.Yu., Ermashonok S.M. Gidravlicheskie i pnevmaticheskie mashiny: Kurs lektsiy [Hydraulic and pneumatic machines]. Bratsk: Bratsk State University Publ., 2005. 200 p.
  12. Kondrashov Yu.I. Konstruktsiya i proektirovanie agregatov i sistem: elektron. ucheb. posobie [Construction and design of units and systems]. Samara: Samara State Aerospace University Publ., 2011. 297 p.
  13. Timirkeyev R.G. Promyshlennaya chistota i tonkaya fil'tratsiya zhidkostey letatel'nykh apparatov [Industrial purity and fine filtration of aircraft fluids]. Moscow: Mashinostroenie Publ., 1986. 152 p.
  14. Fitch E.C. Extending component service life through proactive maintenance. Stillwater, Oklahoma U.S.A: Tribolics, Inc., 1998. 15 p.
  15. Fitch E.C. Fluid contamination control. Oklahoma: FES, Inc., 1988. 433 p.
  16. Nikitin G.A. Vliyanie zagryaznennosti zhidkosti na nadezhnost' raboty gidrosistem letatel'nykh apparatov [Influence of fluid contamination on the reliability of aircraft hydraulic systems]. Moscow: Transport Publ., 1969. 184 p.
  17. Kuznetsova G.V. Diagnosing the state of hydraulic machines during running in. Proceedings of Higher Educational Institutions. Маchine Building. 1983. No. 8. P. 81-84. (In Russ.)
  18. Gareyev А.М., Popelnyuk I.А. Use of phase portraits of hydro-mechanical units for diagnosing aircraft hydraulic systems. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2018. V. 17, no. 3. P. 44-55. doi: 10.18287/2541-7533-2018-17-3-44-55 (In Russ.)

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