Abstract
This paper reviews recent developments in digital switched hydraulics particularly the switched inertance hydraulic systems (SIHSs). The performance of SIHSs is presented in brief with a discussion of several possible configurations and control strategies. The soft switching technology and high-speed switching valve design techniques are discussed. Challenges and recommendations are given based on the current research achievements.
References
Scheidl R, Linjama M, Schmidt S. Is the future of fluid power digital? Proceedings of the Institution of Mechanical Engineers. Part I, Journal of Systems and Control Engineering, 2012, 226(6): 721–723
Yang H Y, Pan M. Engineering research in fluid power: A review. Journal of Zhejiang University. Science A, 2015, 16(6): 427–442
Linjama M, Laamanen A, Vilenius M. Is it time for digital hydraulics? In: Proceedings of the 8th Scandinavian International Conference on Fluid Power. Tampere, 2003, 347–366
Linjama M. Digital fluid power: State of the art. In: Proceedings of the 12th Scandinavian International Conference on Fluid Power. Tampere, 2011, 18–20
The Artemis Intelligent Power Ltd. Digital Displacement hydraulics. 2017. Retrieved from http://www.artemisip.com/
Digital Hydraulic LLC. Digital Hydraulic Transformer. 2017. Retrieved from http://www.digitalhydraulic.com
Norrhydro Ltd. NorrDigi System Solution. 2017. Retrieved from http://www.norrhydro.com
Scheidl R, Kogler H, Winkler B. Hydraulic switching controlobjectives, concepts, challenges and potential applications. Hidraulica, 2013, (1): 7–18
Winkler B. Development of a fast low-cost switching valve for big flow rates. In: Proceedings of the 3rd FPNI-PhD Symposium on Fluid Power. Terrassa, 2004, 599–606
Winkler B, Ploeckinger A, Scheidl R. A novel piloted fast switching multi poppet valve. International Journal of Fluid Power, 2010, 11 (3): 7–14
Kogler H, Scheidl R. Two basic concepts of hydraulic switching converters. In: Proceedings of the First Workshop on Digital Fluid Power. Tampere, 2008, 113–128
Manhartsgruber B, Mikota G, Scheidl R. Modelling of a switching control hydraulic system. Mathematical and Computer Modelling of Dynamical Systems, 2005, 11(3): 329–344
Scheidl R, Manhartsgruber B, Kogler H. Mixed time-frequency domain simulation of a hydraulic inductance pipe with a check valve. Proceedings of the Institution of Mechanical Engineers. Part C, Journal of Mechanical Engineering Science, 2011, 225(10): 2413–2421
Kogler H, Scheidl R, Ehrentraut M, et al. A compact hydraulic switching converter for robotic applications. In: Proceedings of Bath/ASME Symposium on Fluid Power and Motion Control. Bath: ASME, 2010, 55–68
Scheidl R, Garstenauer M, Manhartsgruber B. Switching Type Control of Hydraulic Drives—A Promising Perspective for Advanced Actuation in Agricultural Machinery. SAE Technical Paper 2000–01-2559, 2000
Kogler H. The hydraulic buck converter—Conceptual study and experiments. Dissertation for the Doctoral Degree. Linz: University Linz, 2012
Kogler H, Scheidl R. Energy efficient linear drive axis using a hydraulic switching converter. Journal of Dynamic Systems, Measurement, and Control, 2016, 138(9): 091010
Johnston N, Pan M, Kudzma S. An enhanced transmission line method for modelling laminar flow of liquid in pipelines. Proceedings of the Institution of Mechanical Engineers. Part I, Journal of Systems and Control Engineering, 2014, 228(4): 193–206
Pan M, Johnston D, Plummer A, et al. Theoretical and experimental studies of a switched inertance hydraulic system. Proceedings of the Institution of Mechanical Engineers. Part I, Journal of Systems and Control Engineering, 2014, 228(1): 12–25
Pan M, Johnston D N, Plummer A R, et al. Theoretical and experimental studies of a switched inertance hydraulic system including switching transition dynamics, non-linearity and leakage. Proceedings of the Institution of Mechanical Engineers. Part I, Journal of Systems and Control Engineering, 2014, 228(10): 802–815
Pan M, Johnston N, Robertson J, et al. Experimental investigation of a switched inertance hydraulic system with a high-speed rotary valve. Journal of Dynamic Systems, Measurement, and Control, 2015, 137(12): 121003
Pan M. Adaptive control of a piezoelectric valve for fluid-borne noise reduction in a hydraulic buck converter. Journal of Dynamic Systems, Measurement, and Control, 2017, 139(8): 081007
Sell N, Johnston D, Plummer A, et al. A linear valve actuated switched inertance hydraulic system. In: Proceedings of the 14th Scandinavian International Conference on Fluid Power. 2015, 49430
Pan M, Plummer A, El Agha A. Theoretical and experimental studies of a switched inertance hydraulic system in a four-port high speed switching valve configuration. Energies, 2017, 10(6): 780
Pan M. A global optimisation of a switched inertance hydraulic system based on genetic algorithm. In: Proceedings of the 15th Scandinavian International Conference on Fluid Power. Linköping, 2017, 302–308
Brown F T. Switched reactance hydraulics: A new way to control fluid power. In: Proceedings of the National Conference on Fluid Power. Chicago, 1987, 25–34
Johnston D N. A switched inertance device for efficient control of pressure and flow. In: Proceedings of Bath/ASME Fluid Power and Motion Control Symposium. New York: ASME, 2009, 1–8
Wang F, Gu L, Chen Y. A continuously variable hydraulic pressure converter based on high-speed on-off valves. Mechatronics, 2011, 21(8): 1298–1308
Wang P, Kudzma S, Johnston D N, et al. The influence of wave effects on digital switching valve performance. In: Proceedings of the Fourth Workshop on Digital Fluid Power. Linz, 2011
Van de Ven J D. On fluid compressibility in switch-mode hydraulic circuits—Part I: Modelling and analysis. Journal of Dynamic Systems, Measurement, and Control, 2012, 135(2): 021013
Wiens T K. Analysis and mitigation of valve switching losses in switched inertance converters. In: Proceedings of ASME/Bath 2015 Symposium on Fluid Power and Motion Control. Chicago: ASME, 2015, V001T01A053
Rannow M B, Tu H C, Li P Y, et al. Software enabled variable displacement pumps—Experimental studies. In: Proceedings of the 2006 ASME-IMECE. Chicago: ASME, 2006, IMECE2006-14973
Tu H C, Rannow MB, Van de Ven J D, et al. High speed rotary pulse width modulated on/off valve. In: Proceedings of the 2007 ASMEIMECE. Seattle, 2007, IMECE2007-42559
Wiens T. Analysis and mitigation of valve switching losses in switched inertance converters. In: Proceedings of ASME/Bath 2015 Symposium on Fluid Power and Motion Control. Chicago: ASME, 2015, FPMC2015-9600
Rannow MB, Li P Y. Soft switching approach to reducing transition losses in an on/off hydraulic valve. Journal of Dynamic Systems Measurement & Control, 2012, 134(6): 064501
Yudell A C, Van de Ven J D. Soft switching in switched inertance hydraulic circuits. In: Proceedings of Bath/ASME 2016 Symposium on Fluid Power and Motion Control. Bath: ASME, 2016, V001T01A040
Li P Y, Li C Y, Chase T R. Software enabled variable displacement pumps. In: Proceedings of ASME International Mechanical Engineering Congress and Exposition. Orlando: ASME, 2005, 12: 63–72
Brown F T, Tentarelli S C, Ramachandran S. A hydraulic rotary switched inertance servo-transformer. Journal of Dynamic Systems, Measurement, and Control, 1988, 110(2): 144–150
Liaw C J, Brown F T. Nonlinear dynamics of an electrohydraulic flapper nozzle valve. Journal of Dynamic Systems, Measurement, and Control, 1990, 112(2): 298–304
Yokota S, Akutu K. A fast-acting electro-hydraulic digital transducer: A poppet-type on-off valve using a multilayered piezoelectric device. JSME International Journal. Series 2, Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties, 1991, 34(4): 489–495
Cui P, Burton R T, Ukrainetz P R. Development of A High Speed On/Off Valve. SAE Technical Paper 911815, 1991
Kajima T, Kawamura Y. Development of a high-speed solenoid valve: Investigation of solenoids. IEEE Transactions on Industrial Electronics, 1995, 42(1): 1–8
Winkler B, Scheidl R. Optimization of a fast switching valve for big flow rates. In: Proceedings of Bath Workshop on Power Transmission and Motion Control. 2006, 387–399
Tu H, Rannow M B, Wang M, et al. Modeling and validation of a high speed rotary PWM on/off valve. In: Proceedings of the ASME 2009 Dynamic Systems and Control Conference. Hollywood: ASME, 2009, 629–636
Katz A A, Van de Ven J D. Design of a high-speed on-off valve. In: Proceedings of the ASME 2009 International Mechanical Engineering Congress and Exposition. Lake Buena Vista: ASME, 2009, 237–246
Sell N. Control of a fast switching valve for digital hydraulics. Dissertation for the Doctoral Degree. Bath: University of Bath, 2015
Sell N, Johnston D, Plummer A, et al. Development of a position controlled digital hydraulic valve. In: Proceedings of the ASME/BATH 2015 Symposium on Fluid Power and Motion Control. Chicago: ASME, 2015, V001T01A008
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pan, M., Plummer, A. Digital switched hydraulics. Front. Mech. Eng. 13, 225–231 (2018). https://doi.org/10.1007/s11465-018-0509-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11465-018-0509-7