On 23 September 2013 03:50, Stuart Stevenson <stus...@gmail.com> wrote: > Gentlemen, > I want to control a hydraulic cylinder (extension and retraction) with > LinuxCNC. > I want to use an axial piston swash plate pump. > I want to control the swash plate with a servo motor.
This ought to work, but it isn't the usual way to do it. The servo-hydraulic machines I used to work with (and that are used extensively on the vehicle test rigs) use a "Moog valve" to divert pressure to one side or the other of the cylinder. The pump runs under closed-loop pressure control (I think). http://www.moog.com/literature/ICD/RCE18N11_Moog-LOW.pdf Looks like a reasonable description, albeit from a motorsport rather than industrial perspective. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ LIMITED TIME SALE - Full Year of Microsoft Training For Just $49.99! 1,500+ hours of tutorials including VisualStudio 2012, Windows 8, SharePoint 2013, SQL 2012, MVC 4, more. BEST VALUE: New Multi-Library Power Pack includes Mobile, Cloud, Java, and UX Design. Lowest price ever! Ends 9/20/13. http://pubads.g.doubleclick.net/gampad/clk?id=58041151&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
