Comments on: About that feedback device port http://openservodrive.com/about-that-feedback-device-port/ Cutting edge without Bleeding edge Thu, 15 May 2025 12:21:32 +0000 hourly 1 http://wordpress.org/?v=4.1.12 By: Tero http://openservodrive.com/about-that-feedback-device-port/#comment-34 Tue, 20 Nov 2012 11:12:11 +0000 http://openservodrive.com/?p=259#comment-34 I could not find protocol specifications for UTSIH-B17CC encoder but it is likely that hardware could support it because almost every serial encoder has just some sort of SPI data bus.

So it’s practically just matter of firmware if the support will be realized. Without knowing its protocol its impossible to say whether it will work or not. However, if protocol is known, then either we or anyone else may implement the encoder support to the open source FW.

]]> By: Stef Bord http://openservodrive.com/about-that-feedback-device-port/#comment-33 Tue, 20 Nov 2012 10:46:03 +0000 http://openservodrive.com/?p=259#comment-33 For exemple the UTSIH-B17CC encoder…

]]> By: Stef Bord http://openservodrive.com/about-that-feedback-device-port/#comment-32 Tue, 20 Nov 2012 10:10:00 +0000 http://openservodrive.com/?p=259#comment-32 This servo driver could drive serial encoders like serial encoders found on Yaskawa or Mitsubishi etc.. servomotors ?

]]> By: Tero http://openservodrive.com/about-that-feedback-device-port/#comment-31 Fri, 16 Nov 2012 14:19:55 +0000 http://openservodrive.com/?p=259#comment-31 Halls, resolvers and some serial encoders are absolute, so current driven phase align not compulsory at start-up. Offset parameter is a very good idea! I will keep it in mind and think how I can make it easy to setup (some auto-setup is the only way here as randomly shooting some offset values is very frustrating).

]]> By: Tero http://openservodrive.com/about-that-feedback-device-port/#comment-30 Fri, 16 Nov 2012 14:15:48 +0000 http://openservodrive.com/?p=259#comment-30 Currently fully implemented are quadrature & halls. SinCos and resolver modes are on halfway done but will be finished eventually. Once I get serial encoders, I will also try include them in official FW.

The FW sources will be in Github, so anyone can commit improvements :)

]]> By: Lubchi http://openservodrive.com/about-that-feedback-device-port/#comment-28 Fri, 16 Nov 2012 04:26:41 +0000 http://openservodrive.com/?p=259#comment-28 Controlling an SMPM information about the pole’s position is needed for the current control. Usualy the Resolvers and the most other encoders don’t generate a signal for the electrical commutation. But there could be an “offset” stored into the drive’s parameters. It’s just an example solution. There are also other approaches – Hall sensors, ex-factory positioning of the encoder’s zero over one of the motor poles etc.
What is foreseen for the Argon in this direction?

]]> By: Lubchi http://openservodrive.com/about-that-feedback-device-port/#comment-27 Fri, 16 Nov 2012 04:16:42 +0000 http://openservodrive.com/?p=259#comment-27 Which feedback devices are supported ex-factory and don’t need additional driver written by the user?

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