2015-03-25 15:07 GMT-03:00 alex chiosso <achio...@gmail.com>: > Hi Leonardo. > If you want to perform a closed loop position system as you said you need > the inner speed closed loop. > I do believe that can be quite difficult to perform both closed loops > within LCNC with the expected accuracy. > The VFD that you are using is a sensor less vector control type (that is > why you have to close the speed loop outside the VFD). > This kind of VFD are not the right product to run a "servo system" (as you > already know) also because you should drive an asynchronous induction motor > that is not usually suited for that porpouse. > I'm not a LCNC guru .... but at least I've always used a vector VFD with > encoder feedback tied from the motor to the VFD with the encoder simulation > feedback connected to the axis module . >
Hello Alex and thanks for the answer. Well, I know this is not the best solution to drive a servo system, but since this is not a really accurate machine, because I only need to position a coil for induction heating, I can live with that. Also now It's working pretty well considering these limitations. Anyway I was investigating this because If I can manage to get better results with this system I would love to achieve them. -- *Leonardo Marsaglia*. ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
