4-way pilot valve with a 100hz bandwidth. 4-way,open-centre, fast acting, directional valve with 25 l/min capacity. 2-port miniature valve for proportional control of a semi-active car
suspension.There is a continuing need to provide hydraulic control products that have improved reliability and lower cost to compete with alternative electrical systems. Systems integration and standard interfacing are also requirements for the continued acceptability of electro-hydraulic systems in industrial applications.
The MSSR Group has been addressing the problem of providing low-cost electro-hydraulic valves with an acceptable price/performance ratio. To this end a series of novel floating disc valves have been developed for general and special purpose requirements. They have a simple configuration, few critical dimensions and can be miniaturised. Valves which have been developed by the group include :-
4-way pilot valve with a 100hz bandwidth.
4-way,open-centre, fast acting, directional valve with 25 l/min capacity.
2-port miniature valve for proportional control of a semi-active car
suspension.
Further reading: Y.Sun and G.A.Parker. A position contolled disc valve in vehicle semi-active car suspension systems. Control Eng.Practice.Vol1,No.6, p 927-935. 1993. Y.Sun and G.A.Parker. Steady state theoretical model of an electro-hydraulic single-disc pilot valve. Trans.ASME. J. of Dyn. Sys.,Meas. and Control.,Vol.114.No.2. p 293-298 .June 1992. G.A.Parker and Y.Sun. A mechatronic approach to compact fluid disc valve design.Proc.Inst.Mech.Eng. Vol.209.Pt.1 J. of Sys. and Control Eng. p115-125.1995.
Professor Graham Parker
Mechatronic Systems and Robotics Research Group,
School of Mechanical and Materials Engineering,
University of Surrey,
Guildford, Surrey, GU2 7XH,
United Kingdom.
tel : (01483) 879283
fax: (01483) 306039
email: g.parker@surrey.ac.uk
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