Stuart Stevenson 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. > The null position on the pump may not be completely repeatable. Also, the difference between zero output and minimal output may involve a jump that would make a servo a bit unstable. The cylinder may have some amount of stick-slip friction in the seals, and any air that gets in the system may cause position to fluctuate.
It OUGHT to work, in general, especially since you don't need really tight position control. The more worn the pump is, the worse the whole system will perform, due to a sort of backlash in the pump mechanism. Jon ------------------------------------------------------------------------------ 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
