Study on Individual Pressure Control in Energy Efficient Cylinder Drives
2006 (English)In: 4th FPNI-Ph.D. Symphosium, FPNI’06, Sarasota, United States, 13th–17th June, 2006, M. Ivantysynova (ed.), 2006, 77-99 p.Conference paper (Refereed)
This paper deals with energy efficient mobile valves with cylinder loads. In recent years, the need for energy efficient fluid power systems has increased. The reason is the increasing price of oil as well as tougher environmental regulations. One way of achieving an energy efficient directional valve is to use individually controlled meter-in and meter-out orifices and transfer functionality from hardware to the software controller. This type of solution makes it possible to keep metering losses low. Energy recovery is also made possible since both speed and lowest cylinder chamber pressure can be controlled. The challenge in such a controller is to decouple the chamber pressures in the MIMO (multi-input-multi-output) hydraulic system into independent SISO (single-input-single-output) systems. In this paper, a decoupling based on a linear analysis of the physical system has been implemented and tested in a cylinder position control application. The controller is evaluated in terms of performance and robustness. In the near future, this project will continue with other approaches as well, as there are several interesting control approaches available.
Place, publisher, year, edition, pages
2006. 77-99 p.
Fluid power, separate metering, decouped control
IdentifiersURN: urn:nbn:se:liu:diva-12537ISBN: 1-42430-499-7OAI: oai:DiVA.org:liu-12537DiVA: diva2:439
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