Optical Encoder with hollowshaft

Moti0nGFX

Moin, for my self-developed 3d sintered gimbal to work even better, I want to use encoders. For magnet-related solutions, I have little space because I use a sliding ring at ROll and YAW. So I would have to rebuild the shafts and engine cages.

Have you made experiences like optical encoders? Of course, there are also high-resolution and the "reading disc" I could intigrieren wonderfully as well as carry on the lines in the hollow shaft.

Gimbal:https://www.picdrop.de/moti0ngfx/jQLNJJ1Soi for roll and yaw i use gbm8108-90t
Following examples: http://www.gurley.com/Encoders/rotinc.htm

https://www.google.com/imgres?imgurl=http://www.gurley.com/Encoders/In_Focus_5_06.jpg&imgrefurl=http://www.gurley.com/Gimbal/&docid=pyal1sajt7Vy5M&tbnid=86mNsWtLzsXalM:&vet=10ahUKEwigiKirrNHbAhXJF5oKHU0DBIcQMwg9KAAwAA..i&w=500&h=465&client=firefox-b&bih=922&biw=1920&q=optical encoder in gimbal&ved=0ahUKEwigiKirrNHbAhXJF5oKHU0DBIcQMwg9KAAwAA&iact=mrc&uact=8#h=465&imgdii=dBJOEk099B-CIM:&vet=10ahUKEwigiKirrNHbAhXJF5oKHU0DBIcQMwg9KAAwAA..i&w=500

alexmos

Hello!

Optical encoders have excellent precision, but the only one problem that makes it less useless for gimbals: they all are incremental. As you may notice, we support ONLY absolute encoders.

With the hollow haft I can advise only AMT203. Though, other magnetic on-axis encoders can be used, but with the limitation for a working ragne of axis. Many regular gimbals with limited range use cheap magnetic encoders with big success.

Regards, Aleksey.

Moti0nGFX

Hi Aleksey,
The reason why I opened the topic is that I found ABSOLUTE optical encoder - not cheap but exactly as I need it - even with SPI or CAN (open / lift) cominacation.

one: http: //de.beisensors.com/absolut-multiturn-optische-drehgeber.html
Two: https: //www.posital.com/de/produkte/absolute-drehgeber/absolute-drehgeber-finder/OCD-CAA1B-0012-B080-ARW/101472002/detail.php
Three: http: //www.gpi-encoders.com/06_7700.htm

In my opinion the best system unfortunately uses other protocols, or is it possible to integrate them?
Http: //www.renishaw.de/de/resolute-absolut-messsystem-mit-resa-winkelmessring--10939

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