1[1]Erik Trostmann,Water Hydraulics Control Technology[M],Danfoss A/S,1996
2[2]K.T.Koskinen,M.J.Vilenius,T.Virvalo and E.Makinen.Water as a pressure medium in position servo systems.The Forth Scandinavian International Conference on Fluid Power[Z].Tampere,Finland:Septemter 26-29,1995.
3[3]Eizo Urata,Shimpei Miyakawa,Chishiro Yamashina,et.al.,Development of a water hydraulic servovalve[J].JSME International Journal,Series B,Vol.41,No.2,1998:286-294.
4[4]P.Kenny,E.D.Yardley,A.R.M.Eedy,G.Moreton and M.G.Talks.A study of erosion and corrosion of materials used in hydraulic equipment with fire-resistant fluids.The Mining Engineer[J],September 1979:235-243.
5[5]Wolfgang Backe,Water-or oil-hydraulics in the future.The Sixth Scandinavian International Conference on Fluid Power[Z].Tampere,Finland :May 26—28,1999:51—64.
6[6]A.Brooks,et.The development of water hydraulic pumps using advanced engineering ceramics,Proc.of 4th Scandinavian Inter.Conf.on Fluid Power[Z].Finland:September 26—29 1995:965—977.
7[7]Ulrich Samland,et.The use of new materials in water hydraulics.The Sixth Scandinavian International Conference on Fluid Power[Z].Tampere,Finland:September 26—29,1995.
9Tu H C, Rannow M B, Wang M, et al. Modeling and valida- tion of a high speed rotary PWM on/off valve[ C]//Pro- ceedings of the ASME Dynamic Systems and Control Con- ference. 2009:629 - 636.