Definition method signal filtering irregularity crankshaft speed of diesel
Keywords:uneven speed, folding diesel diagnostics, digital filtration signal spectral analysis, phase shift
Purpose. Determination of signal processing techniques uneven angular velocity of the crankshaft of diesel locomotive for the release of the signal from the noise. Methodology. One of the implementations of strategy development and implementation of folding diagnosing diesel engines in service is a method of folding diagnostics and condition monitoring of diesel locomotive for uneven speed of the crankshaft. The disadvantages of the method of averaging the data and the technique of non-repeatable evaluation cycles diesel are analyzed. Findings. Signal receiving of uneven speed is achieved by using angular velocity sensor, which is used as an incremental encoder. The block diagram of the device and the parameters of the received signal have been shown. Typical graphic interpretations of the angular velocity signal are presented. Using of FIR filter was proposed and its parameters were dimensioned. The analysis of the spectrograms of the signals in both measurement modes speed signal was carried out and the filter cut-off frequency was selected. The solution of the problem of the phase shift filtering results is presented. Originality.The importance of the digital filter is substantiated. The approach, which allows the use of non-repeatable indicator cycles as an additional indicator of the diesel engine is developed. Practical value.Problem solving of signal processing allows receiving a useful signal not taking into account noise impact, which distorts the true picture of the physical process.
Bodnar B.Ye., Ochkasov О.B., Chernyayev D.V., Detsiura О.Ya. Metody nerozbirnoho diagnostuvannia dyzeliv pry ekspluatatsii rukhomoho skladu [Methods of molded diagnosis of diesel engines in the operation of rolling stock]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2012, issue 41, pp. 63-67.
Bodnar B.Ye., Ochkasov О.B., Chernyayev D.V., Detsiura О.Ya. Modeliuvannia nerivnomirnosti obertannia kolinchatoho valu dyzelia [Modeling irregularity of the crankshaft of diesel]. Visnyk Dnipropetrovskoho natsio-nalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2010, issue 31, pp. 18-25.
Borshchenko Ya. А. Razrabotka metoda diagnostirovaniya avtomobilnykh dizeley po neravnomernosti vrashcheniya kolenchatogo vala. Kand. Diss. [Development of a diagnosis automobile diesels method on the uneven rotation of the crankshaft. Cand. Diss.]. Tumen, 2003. 189 p.
Lazarev Yu.F. Modelirovaniye protsessov i sistem v MATLAB [Modeling of processes and systems in MATLAB]. Saint Petersburg, Piter Publ., 2005. 512 p.
Marchenko B.G., Myslovich М.V. Teoriya diagnostiki energoagregatov pо deviatsii vrashchayushchikhsya uzlov i yeye prakticheskaya realizatsiya nа dizel-elektricheskikh generatorakh. Chast 4. Eksperimentalnaya pro-verka metodiki diagnostiki tsilindro-porshnevoy gruppy dizel-elektricheskogo generatora [The theory of power units to diagnose deviations rotating parts and the practical implementation of the diesel and electric generators. Part 4. Experimental verification of the diagnostic techniques of cylinder and piston group of diesel and an electric generator]. Tekhnicheskaya elektrodinamika – Technical electrodynamics, 1999, no. 4, pp. 40-45.
Sergiyenko A.B. Tsifrovaya obrabotka signalov [Digital signal processing]. Saint Petersburg, Piter Publ., 2007. 751 p.
Challen B., Baranescu R. Diesel Engine Reference Book, 2nd edition. Butterworth-Heinemann, 1999. 682 p.
Gawande S.H., Navale L.G., Nandgaonkar M.R., Butala D.S., Kunamalla S. Cylinder Imbalance Detection of Six Cylinder DI Diesel Engine Using Pressure Variation. International Journal of Engineering Science and Technology, 2010, vol. 2 (3), pp. 433-441.
Gawande S.H., Navale L.G., Nandgaonkar M.R., Butala D.S. Harmonic Frequency Analysis of Multi-Cylinder Inline Diesel Engine Genset for Detecting Imbalance. International Review of Mechanical Engineering (I.RE.M.E.), 2009, vol. 3, no. 6, pp. 782-787.
How to Cite
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).