... snip >>> I think that the servos + resolvers will work a fair bit better than >>> steppers. I was rather upset when I found that my ebay bargain servos >>> had resolvers, but now I am something of a fan of the devices. >> I have to agree, if they are used correctly with good electronics to >> drive them, they are very good and they last.
... snip For most cases, my vote is with encoders, but if the resolvers are installed and working that's a plus for resolvers. I didn't have an option at the time I converted my lathe: http://www.wallacecompany.com/cnc_lathe/HNC/00006-1a.jpg http://www.wallacecompany.com/cnc_lathe/HNC/ http://www.heidenhain.us/enews/stories_0411/AUmain.php -------------- "SUMMARY Resolvers provide absolute position information and are capable of operating in relatively high temperature and shock environments because they are similar in construction to the motor itself. However, they are inflexible in their application, and must be specifically "tuned" to meet the drive system requirements. Encoders on the other hand, can be absolute or incremental, simplify the design task, are more accurate, allow for a wider dynamic range and are more flexible should changes be necessary in the future." -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ 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
