Sphenix-tpc-l mailing list

[Thomas K Hemmick <tkhemmick AT gmail.com>]

This link also says that you cannot know the position by counting the steps since the step sizes vary by 5-10%. We need to learn more about how to operate them with the required precision. 

Tom

On Fri, May 8, 2020 at 3:03 PM Bob Azmoun <azmoun AT bnl.gov> wrote:

Interesting, very good to know (these things are really amazing!). Even though the motor can stop at the 1nm level, I wonder what the repeatability is if the arm crashes to a stop instead. That is, if we are considering to use a mechanical stop as a reference.

On Fri, May 8, 2020 at 2:17 PM Dan Cacace <dannycacace AT gmail.com> wrote:

Hi Bob and Tom,

Just doing a little googling and found FAQ about Piezo LEGS®, but I imagine it applies to the technology in general. Among other things, it says that "The motor will not be damaged if it is run to a hard stop."

https://www.micromo.com/technical-library/piezo-motor-tutorials/piezo-motors-faqs

-Dan

On Thu, May 7, 2020 at 9:40 PM Bob Azmoun <azmoun AT bnl.gov> wrote:

Dear All,

It was decided to meet again this week, so we will have a meeting tomorrow at 9am. 

A link to the Indico page is here: https://indico.bnl.gov/event/8493/

and the bluejeans link is here: https://bluejeans.com/881710315

I put together a tentative agenda, but please feel free to modify it and upload any material you wish to present. 

Talk to you tomorrow!

Cheers,

Bob

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B. Azmoun
Brookhaven National Laboratory
Physics Dept. Bldg. 510 C
Upton, NY 11973
P: (631) 344-4082
F: (631) 344-3253
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-----------------------------------------------
B. Azmoun
Brookhaven National Laboratory
Physics Dept. Bldg. 510 C
Upton, NY 11973
P: (631) 344-4082
F: (631) 344-3253
-----------------------------------------------