Keywords: Servo control; smismo; energy efficieny
13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
 H E Merritt. Hydraulic Control Systems. John Wileys and Sons; Cincinnati; Ohio; 1967. ISBN 0-471-59617- 5.
 W. J. Thayer. Transfer functions for moog servovalves. In Technical Bulletin 103. Moog Inc.; East Aurora; NY; 1965.
 R. Poley. Dsp control of electro-hydraulic servo actuators. In Application Report SPRAA76. Texas Instruments; 2005.
 M. Jelali and A. Kroll. Hydraulic Servo-systems: Modeling; Identification and Control. Springer; London; 2003.
 C.C. DeBoer and B. Yao. Energy-efficient motion control of a digital hydraulic joint actuator. In Proceedings of IMECE’01 2001 ASME International Mechanical Engineering Congress and Exposition; pages DSC– 2B–3; New York; USA; 2001. Japan Fluid Power System Society.
 K.A. Tabor. Velocity based method of controlling an electrohydraulic proportional control valve. United States patent application No. 20040055453; 2004.
 B.K. Nielsen. Controller Development for a Separate Meter-in Separate Meter-out Fluid Power Valve for Mobile Applications. PhD thesis; Institute of Energy Technology; Aalborg University; Aalborg; Denmark; 2005.
 B. Eriksson. Mobile Fluid Power Systems Design with a Focus on Energy Efficiency. PhD thesis; Institute of Technology; Linköping University; Linköping; Sweden; 2010.
 A.H. Hansen; H.C. Pedersen; T.O. Andersen; and L. Wachmann. Design of energy efficient smismo-els control strategies. In 2011 International Conference on Fluid Power and Mechatronics (FPM); pages 522–527; Aug. 2011.
 H.C. Pedersen; T.O. Andersen; Hansen R.H.; and S. Stubkier. Investigation of separate meter-in separate meter-out control strategies for systems with over centre valves. In Proc. of the ASME Symposium on Fluid Power and Motion Control; FPMC 2010. American Society of Mechanical Engineers; 2010.
 B. Eggers; R. Rahmfeld; andM. Ivantysynova. An energetic comparison between valveless and valve controlled active vibration damping for off-road vehicles. In Proceedings of the 6th JFPS International Symposium on Fluid Power; pages 276–283; Tsukuba; Japan; 2005. Japan Fluid Power System Society.
 E. Zaev. ’Hardware-In-The-Loop’ for real-time simulation of complex mechanical systems and their control. PhD thesis; Faculty of Mechanical Engineering; SS. Cyril and Methodius University; Skopje; Macedonia; 2013.
 A. Shenouda. Quasi-Static Hydraulic Control Systems and Energy Savings Potential Using Independent Metering Four-Valve Assembly. PhD thesis;Woodruff School of Mechanical Engineering; Georgia Institute of Technology; Georgia; 2006.
 G. Rath. Dynamics of high precision position controlled hydraulic cylinder subjected to elastic load. In K.T.
Koskinen and M. Vilenius; editors; The Eighth Scandinavian International Conference on Fluid Power; Proceedings; pages 383–396; Tampere; Finland; 2003.
 W. Backé and H. Murrenhof. Grundlagen der ölhydraulik. Lecture notes; RWTH Aachen; Germany; 1994.
 R. Forsberg. Cut profile accuracy of roadheaders: Influence of different components and measures for improvements. Master’s thesis; KTH Machine Design; Stockholm; Sweden; 2005.
 G.F. Franklin; M.L. Workman; and D. Powell. Digital Control of Dynamic Systems. Addison-Wesley Longman Publishing Co.; Inc.; Boston; MA; USA; 3rd edition; 1997.
 K. Heybroek. Saving Energy in Construction Machinery using Displacement Control Hydraulics; Concept Realization and Validation. PhD thesis; Institute of Technology; Linköping University; Linköping; Sweden; 2008.
 P. Krus. On Load Sensing Fluid Power Systems; With Special Reference to Dynamic Properties and Control Aspects. PhD thesis; Department of Mechanical Engineering; Linköping University; Linköping; Sweden; 1988.
 T. Shang. Improving Performance of an Energy Efficient Hydraulic Circuit. PhD thesis; Department of Mechanical Engineering; University of Saskatchewan; Saskatoon; Canada; 2004.
 M. Linjama and M. Vilenius. Energy-efficient motion control of a digital hydraulic joint actuator. In Proceedings of the 6th JFPS International Symposium on Fluid Power; pages 640–645; Tsukuba; Japan; 2005. Japan Fluid Power System Society.
 Y. Jinghong; C. Zhaoneng; and L. Yuanzhang. The variation of oil effective bulk modulus with pressure in hydraulic systems. Journal of Dynamic Systems; Measurement; and Control; 116(1):146–150; 1994.