Both the performance and energy efficiency aspects should be considered in dealing with high-power servodrives. This paper discusses the structure, properties and robustness of alternative oil flow control methods for position-controlled hydraulic servocylinders. A general non-linear model of a mechatronic cylinder drive is given and the following four control concepts are analysed: valve control, pump control, hydrotransformer control and electric motor control. The paper discusses the design aspects that should be considered in connection with these system alternatives in order to satisfy the economic and performance demands of modern drive applications.
Get full access to this article
View all access options for this article.
References
1.
SprockhoffV.Untersuchungen von Regelungen am hydrostatischen Zylinderantrieb mit Servopumpe. Dissertation, RWTH Aachen, 1979, 134 pp.
2.
DluzikK.Zylinderansteuerungen am Drucknetz durch Hydrotransformatoren. Ölhydraulik und Pneumatik, 1987, 31(3), 248–259.
3.
TuokkoR.Comparison of control methods of mechatronic hydraulic cylinder drives (in Finnish). Lic. Tech. thesis, 1989, Tampere University of Technology, 199 pp.
4.
BerbuerJ.LechnerE.Schnelle Pumpenverstellung und neuartige Schaltungskonzepte für verlustarme hydrodynamische Regelantriebe. In Proceedings of the Eighth Conference on Aachener Fluidtechnisches Kolloquium, Vol. 2, 1988, pp. 61–85.
5.
BackéW.High-response hydraulic drives can provide energy-savings. In Proceedings of the Second International Conference on Fluid power transmission and control, Hangzhou, China, 1989, pp. 333–339.
6.
TuokkoR.Yli-PaunuP.Electric servodrives become more and more dominating in machine automation (in Finnish). Konepajamies, 1989, 6, 10–16.
7.
HahmannW.Das dynamische Verhalten hydrostatischer Antriebe mit Servopumpe und ihr Einsatz im Regelkreisen. Dissertation, RWTH Aachen, 1973, 137 pp.
8.
BavendiekR.Neue Methode zur Bestimmung der Verluste (Wirkungsgrade) an hydrostatischen Maschinen. Ölhydraulik und Pneumatik, 1987, 31(11), 861–866.
9.
LuomarantaM.VileniusM.MäkeläK.Valvistor based modern servo package. In Proceedings of the First JHPS International Symposium on Fluid power, Tokyo, Japan, 1989, pp. 557–564.
10.
TuokkoR.A systematical approach to the selection of position controlled heavy cylinder drives. In Proceedings of the Second International Conference on Fluid power transmission and control, Hangzhou, China, 1989, pp. 100–105.
11.
SatoS.KobayashiK.WatanabeS.Parallel drive control system of a hydraulic motor using pump control and valve control. In Proceedings of the Second International Conference on Fluid power transmission and control, Hangzhou, China, 1989, pp. 40–45.
