Re: [PSUBS-MAILIST] Midget Gyro-Compass, was : want to purchase

["Warrend Greenway" <dub@linuxmail.org>]

I might be able to tell you after reading the datasheet. Usually though,
you need to get a set of data points, either provided by the manufacturer
and then use solver in Excel to give you an equation that does all the
dirty work for you. I have often found that the errors mentioned are 
irrelevant in most applications.

Warren.

> Steven - thank you yery much for the PDF file.
>  
> Its a funny small 1 cubic inch gyro - looks good. 
> Unfortunatly I am not understand all of the electric figures -
> special Bias, Bias Internal error, Scale Faktor Variation with temp,
> Initial SF accurancy, non linearity. 
> 
> I looking know for somebody of our Psubs own Electric freaks which can
> tell me in simple words something like :
> "After 5 Hours runtime the compass has an error of +- xy degrees.."
> 
> So - I print is out , scan it - make a JPG and put is to Moki files 
> as Small Gyro CR203 Report for the Group. Seems a good solution for any
> small psub ?
> 
> See at : http://www.prismnet.com/~moki/subfiles.html
> 
> best regards, Carsten
> 
> 
> 
> 
> Steven Mills schrieb:
> > 
> > >From: Carsten Standfuss <MerlinSub@t-online.de>
> > >
> > 
> > > Hi Steven - I can not belive that a 100 dollar gyro can give
> > > me an excat course over days..
> > > Is that real a gyro ?
> > > But please send me the zip file to
> > 
> > The mems-gyros start at around $100us and go up in
> > price depending on features and sophistication. I didn't
> > know what your budget considerations were so $100
> > seemed to be a good starting point. I'm sure you can spend
> > more for more features. They've been around for awhile
> > and have proven themselves in robotics and other apps.
> > I'll pass the zip to you offlist.
> > 
> > --Steve
> > 
> > >
> > > Steven Mills schrieb:
> > > >
> > > > >From: Carsten Standfuss <MerlinSub@t-online.de>
> > > > >
> > > >
> > > > > Hi Submadmans, I looking for a
> > > > > second hand but good working :
> > > > > - Gyro Compass -
> > > > >
> > > > > (maybe from an aircraft) and
> > > > > electric driven (not air driven).
> > > > >
> > > >
> > > > Are you familiar with "silicon sensing systems" or "MEMS-based gyros "?
> > > >
> > > > They are used in things like model rockets, ROVs and AUVs, auto vehicle
> > > > stability control, marine autopilots....etc.
> > > >
> > > > "CRS03"
> > > > "ICG180 Gyro"
> > > > "ICG400"
> > > >
> > > > are a few examples and the costs start around $100US.
> > > >
> > > > I'm sure you can find a source in Germany ( Siemens might
> > > > have their own design perhaps? ).
> > > >
> > > > I have a data sheet for the CRS03. I could zip it to you?
> > > >
> > > > --Steve
> > >
> 

-- 
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