On 22 December 2012 23:06, Peter C. Wallace <[email protected]> wrote:
> Stevens tuning method is appropriate for first order systems (velocity mode > servos or voltage to current loops in motor controls or spindle speed loops) > > Tuning second order systems (and the bare hBridge systems like the 7I39 > approximate a second order system) are tuned differently and depend on the D > term for stability. I have a controller at work that is nearly all I-term. A change in the steady-state current into a valve allows oil into one chamber or another of an actuator that varies the stroke of a pump. My feedback is pump outlet pressure, my control input is solenoid current. It's not a particularly easy system to tune. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
