[time-nuts] Nano Gyroscope

Brooke Clarke brooke95482 at att.net
Wed Oct 6 20:28:37 UTC 2010


Hi Bill:

I thought the key idea was that the long term drift rate of a gyro is 
independent of the mechanism.
The modern MEMS gyros have a very poor long term drift and so are only 
suitable for use over short time spans.

Have Fun,

Brooke Clarke
http://www.PRC68.com


Bill Hawkins wrote:
> Hi Brooke,
>
> Looks like the physorg paper is talking about an optical rate gyro.
> Don't think the drift rate matters, since position is not measured.
>
> Yes, your reference gives bad numbers for a fiber optic rate gyro,
> but the physorg paper claims a device that works.
>
> Something is out of joint. (Thin reference to time in Hamlet)
>
> Bill Hawkins
>
>
> -----Original Message-----
> From: Brooke Clarke
> Sent: Wednesday, October 06, 2010 11:24 AM
>
> Hi Gerald:
>
> It turns out the the long term drift spec of a gyro depends (using a
> large power law, far from linear) on it's volume.  See:
> http://www.prc68.com/I/Sensors.shtml#Gyroscopic
> I expect that one that can fit into the head of a pin will drift much
> more than 1000 deg/hour.
>
> Have Fun,
>
> Brooke Clarke
> http://www.PRC68.com
>
>
> Gerald Molenkamp wrote:
>    
>> Hi All,
>>
>> Time, GPS and movement plays a big part in most discussions. Each day
>> brings something new and fantastic in the world of science, it just
>> makes you think where it will take us.
>>
>> http://www.physorg.com/news205500249.html
>>
>> Regards
>> Gerald
>> Vk3GJM
>>      
>
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>    

-- 
Have Fun,

Brooke Clarke
http://www.PRC68.com




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