Abstract
Bu çalışmada,
keyfi başlangıç fonksiyonuna sahip hafifçe eğri bir kirişin lineer olmayan
titreşimleri ele alınmaktadır. Her iki ucundan elastik mesnetler kullanılarak
kiriş, boyuna yönünde kısıtlanmıştır. Başlangıçta sinüsoidal eğrilik
fonksiyonuna sahip olduğu varsayılan kiriş için, ulaşılan eğrilik yüksekliğinin
izdüşüme oranı 1/10 alınmaktadır. Euler-Bernoulli tipinde olan kiriş Winkler
elastik zemini üzerine oturmakta ve üzerinde keyfi olarak yerleştirilmiş
kütleler taşımaktadır. Hamilton prensibi kullanılarak hareket denklemleri elde
edilmiştir. Zeminden ve kiriş uzamasından dolayı matematiksel modelde kübik ve
quadratik lineer olmayan terimler ortaya çıkmaktadır. Hareket denklemlerini
analitik olarak çözümlemek için bir Pertürbasyon tekniği olan Çok Ölçekli
Metod(MMS) kullanılmaktadır. Geçici-durum titreşimleri süresince baskın
rezonans durumu dikkate alınmaktadır. Mesnetlerin tipleri, kütlelerin konumları
ve zeminin lineer bileşeni gibi farklı mukayese parametreleri için doğal
frekanslar elde edilmektedir. Genlik-faz modülasyon denklemleri kullanılarak
frekans-genlik ve frekans-cevap grafikleri çizilmiştir.
Keywords
Hidrolik devre Hidrolik motor Elektro-hidrolik hareketlendirici Basınç dengeli Hidrolik sistem
References
- Achten, P., Fu, Z. ve Vael, G. (1997) Transforming future hydraulics: A new design of a hydraulic transformer, The 5th Scandinavian International Conference on Fluid Power (SICFP’97), Linköping, Sweden, 1-18.
- Achten, P., Vael, G., Brink, T., Potma, J. ve Schellekens, M. (2011) Efficiency measurements of the hydrid motor/pump, The Twelfth Scandinavian International Conference on Fluid Power (SICFP’11), 3(1), Finland, 41-49.
- Andersson, B.R. (1980) A survey of load-sensing systems, The BFPR Journal, 13(1) 103-115. doi: 10.1177/0959651813512820
- Biedermenn, O.J., Engelhardt, J. ve Geerling, G. (2009) More efficient fluid power systems using variable displacement hydraulic motors, Technical University Hamburg, Section: Aircraft Systems Engineering, Germany, 1-8. doi:10.15480/882.228
- Drumea, P. (2008) Energy losses in hydraulic systems, FLUIDAS Asociatia Nationala Profesionala De Hidrolica Si Pneumatica, Bucuresti, Romania, 1-10.
- Eriksson, B. (2007) Control strategy for energy efficient fluid power actuators–utilizing individual metering, Licentiate Thesis, Thesis No: 1341, Linkoping University, 13-17. ISBN: 978-91-85895-06-9
- Eriksson, B. (2010) Mobile fluid power systems design–with a focus on energy efficiency, PhD Thesis, Linkoping University. ISBN:978-91-7393-304-9
- Eriksson, B. ve Palmberg, J.O. (2011) Individual metering fluid power systems: challenges and opportunities, Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 225, 196-211. doi: 10.1243/09596518JSCE1111
- Gomm, R. ve Vanderlaan, D. (2009) Velocity control of unbalanced hydraulic actuator subjected to over-center load conditions, Patent: EP 2318720.
- Grey, C.L. (2011) Is the hydraulics industry ready for a world desperate for affordable transportation?, The Eleventh IFPE Conference, Las Vegas, USA, 1-25.
- Heybroek, K. (2008) Saving energy in construction machinery using displacement control hydraulics–concept realization and validation, PhD Thesis, No.1372, Linkoping University. ISBN 978-91-7393-860-0
- Rahmfeld, R. ve Ivantysynova, M. (2001) Displacement controlled linear actuator with differential cylinder–a way to save primary energy in mobile machines, Fifth International Conference on Fluid Power Transmission and Control (ICFP), Hangzhou, China, 316-322.
- Raymond, E.T. ve Chenoweth, C.C. (1993) Aircraft flight control actuation system design, SAE Inc., USA. ISBN: 1560913762
- Rydberg, K.E. (2005) Hydraulic accumulators as key components in energy efficient mobile systems, Sixth International Conference on Fluid Power Transmission and Control (ICFP), Hangzhou, China, 2-5. ISBN/ISSN: 7506274027
- Rydberg, K.E. (2009) Energy efficient hydraulic hybrid drives, The 11th Scandinavian International Conference on Fluid Power (SICFP’09), Linköping, Sweden, 1-14. ISBN: 978-91-7393-588-3
- Shang, T. (2004) Improving performance of an energy efficient hydraulic circuit, MSc Thesis, University of Saskatchewan, Canada, 128-130. http://hdl.handle.net/10388/etd-04242004-151248
- Sullivan, J.A. (1989) Fluid power theory and applications, 3rd ed., Prentice Hall, New Jersey. ISBN 13: 9780133230802
- Vael, G., Achten, P. ve Brink, T. (2009) Efficiency of a variable displacement open circiut floating cup pump, The 11th Scandinavian International Conference on Fluid Power (SICFP’07), Linkoping, Sweden, 20-21. ISBN: 978-91-7393-589-0.
- Wang, L. ve Book, J.W. (2013) Using leakage to stabilize a hydraulic circuit for pump controlled actuators, Journal of Dynamic System Measurement Control, 135, 1-12. doi:10.1115/1.4024900
- Weber, J. ve Burget, W. (2012) Mobile systems-markets, industrial needs and technological trends, 8th International Fluid Power Conference (IFK), Dresden, Germany, 2(1), 23-54.
- Wendel, G. (2002) Hydraulic system configurations for improved efficiency, SAE Technical Paper, No: 01-1433. doi: 10.4271/2002-01-1433
- Werndin, R. ve Palmberg, J.O. (2003) Hydraulic transformers–comparison of different designs, The Eighth Scandinavian International Conference of Fluid Power (SICFP’03), Finland, 1-6.
Abstract
The development of hydraulic systems and the reduction of energy losses
have provided by very serious scientific studies related to these systems
recently. Energy losses consist of friction in pipes,
equipment, elbows and diameter changes. The hydraulic pressure losses that
cause the heat increase will require the use of a cooler, as it will damage the
system. Another energy loss is due to fluid leakages, which are initially small
but increase over time. In addition, the fluid returning to the tank through the
safety valve also increases the energy loss. Equipment and technological
improvements, in hydraulic systems, reduce the energy losses. In order to
facilitate the pressure control in the system, the high-pressurized liquid
discharge in return line, passed through the safety valve installed into the closest
to the pump is increased. The role of the hydraulic system in industrial
development is increasingly taking the place of digital control systems, which
is a much more economical alternative. In this study, conventional and energy
efficient systems are compared with valve and pump-controlled mobile devices.
Keywords
Hydraulic circuit Hydraulic motor Electro-hydraulic actuator Pressure compensated Hydraulic system
References
- Achten, P., Fu, Z. ve Vael, G. (1997) Transforming future hydraulics: A new design of a hydraulic transformer, The 5th Scandinavian International Conference on Fluid Power (SICFP’97), Linköping, Sweden, 1-18.
- Achten, P., Vael, G., Brink, T., Potma, J. ve Schellekens, M. (2011) Efficiency measurements of the hydrid motor/pump, The Twelfth Scandinavian International Conference on Fluid Power (SICFP’11), 3(1), Finland, 41-49.
- Andersson, B.R. (1980) A survey of load-sensing systems, The BFPR Journal, 13(1) 103-115. doi: 10.1177/0959651813512820
- Biedermenn, O.J., Engelhardt, J. ve Geerling, G. (2009) More efficient fluid power systems using variable displacement hydraulic motors, Technical University Hamburg, Section: Aircraft Systems Engineering, Germany, 1-8. doi:10.15480/882.228
- Drumea, P. (2008) Energy losses in hydraulic systems, FLUIDAS Asociatia Nationala Profesionala De Hidrolica Si Pneumatica, Bucuresti, Romania, 1-10.
- Eriksson, B. (2007) Control strategy for energy efficient fluid power actuators–utilizing individual metering, Licentiate Thesis, Thesis No: 1341, Linkoping University, 13-17. ISBN: 978-91-85895-06-9
- Eriksson, B. (2010) Mobile fluid power systems design–with a focus on energy efficiency, PhD Thesis, Linkoping University. ISBN:978-91-7393-304-9
- Eriksson, B. ve Palmberg, J.O. (2011) Individual metering fluid power systems: challenges and opportunities, Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 225, 196-211. doi: 10.1243/09596518JSCE1111
- Gomm, R. ve Vanderlaan, D. (2009) Velocity control of unbalanced hydraulic actuator subjected to over-center load conditions, Patent: EP 2318720.
- Grey, C.L. (2011) Is the hydraulics industry ready for a world desperate for affordable transportation?, The Eleventh IFPE Conference, Las Vegas, USA, 1-25.
- Heybroek, K. (2008) Saving energy in construction machinery using displacement control hydraulics–concept realization and validation, PhD Thesis, No.1372, Linkoping University. ISBN 978-91-7393-860-0
- Rahmfeld, R. ve Ivantysynova, M. (2001) Displacement controlled linear actuator with differential cylinder–a way to save primary energy in mobile machines, Fifth International Conference on Fluid Power Transmission and Control (ICFP), Hangzhou, China, 316-322.
- Raymond, E.T. ve Chenoweth, C.C. (1993) Aircraft flight control actuation system design, SAE Inc., USA. ISBN: 1560913762
- Rydberg, K.E. (2005) Hydraulic accumulators as key components in energy efficient mobile systems, Sixth International Conference on Fluid Power Transmission and Control (ICFP), Hangzhou, China, 2-5. ISBN/ISSN: 7506274027
- Rydberg, K.E. (2009) Energy efficient hydraulic hybrid drives, The 11th Scandinavian International Conference on Fluid Power (SICFP’09), Linköping, Sweden, 1-14. ISBN: 978-91-7393-588-3
- Shang, T. (2004) Improving performance of an energy efficient hydraulic circuit, MSc Thesis, University of Saskatchewan, Canada, 128-130. http://hdl.handle.net/10388/etd-04242004-151248
- Sullivan, J.A. (1989) Fluid power theory and applications, 3rd ed., Prentice Hall, New Jersey. ISBN 13: 9780133230802
- Vael, G., Achten, P. ve Brink, T. (2009) Efficiency of a variable displacement open circiut floating cup pump, The 11th Scandinavian International Conference on Fluid Power (SICFP’07), Linkoping, Sweden, 20-21. ISBN: 978-91-7393-589-0.
- Wang, L. ve Book, J.W. (2013) Using leakage to stabilize a hydraulic circuit for pump controlled actuators, Journal of Dynamic System Measurement Control, 135, 1-12. doi:10.1115/1.4024900
- Weber, J. ve Burget, W. (2012) Mobile systems-markets, industrial needs and technological trends, 8th International Fluid Power Conference (IFK), Dresden, Germany, 2(1), 23-54.
- Wendel, G. (2002) Hydraulic system configurations for improved efficiency, SAE Technical Paper, No: 01-1433. doi: 10.4271/2002-01-1433
- Werndin, R. ve Palmberg, J.O. (2003) Hydraulic transformers–comparison of different designs, The Eighth Scandinavian International Conference of Fluid Power (SICFP’03), Finland, 1-6.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Engineering |
| Journal Section | Survey Articles |
| Authors | |
| Publication Date | August 31, 2018 |
| Submission Date | June 15, 2017 |
| Acceptance Date | June 25, 2018 |
| Published in Issue | Year 2018 Volume: 23 Issue: 2 |
Cite
Cited By
Energy efficiency by reducing throttling losses in hydraulic systems
Journal of Mechatronics and Artificial Intelligence in Engineering
https://doi.org/10.21595/jmai.2023.23011
Announcements:
30.03.2021-Beginning with our April 2021 (26/1) issue, in accordance with the new criteria of TR-Dizin, the Declaration of Conflict of Interest and the Declaration of Author Contribution forms fulfilled and signed by all authors are required as well as the Copyright form during the initial submission of the manuscript. Furthermore two new sections, i.e. ‘Conflict of Interest’ and ‘Author Contribution’, should be added to the manuscript. Links of those forms that should be submitted with the initial manuscript can be found in our 'Author Guidelines' and 'Submission Procedure' pages. The manuscript template is also updated. For articles reviewed and accepted for publication in our 2021 and ongoing issues and for articles currently under review process, those forms should also be fulfilled, signed and uploaded to the system by authors.