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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