Can a Free 2 Axis Gyro Model Account for Contact with a Stop?

AI Thread Summary
A free 2-axis gyro model has been developed that includes classical effects and utilizes a magnetized flywheel for spinning and precession. The challenge arises when the non-rotating axis of the gyro contacts a stop, limiting pitch and yaw movements. The discussion focuses on how to realistically model the effects of this contact, particularly in terms of stopping the pitch rotation when precession occurs. The need for a comprehensive source on modeling disturbance torques and cross-coupling in gyros is emphasized. A solution to the modeling challenge is sought to accurately reflect the gyro's behavior upon contact with the stop.
MikeO
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I want to model a free 2 axis free gyro. I used to have a very detailed model, but cannot find it. It was cross coupled, and included many disturbance torques. All I am looking for is a great source on this topic. Thanks!

Mike
 
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Hi again. I have managed to put together a gyro model that incorporates all of the classical effects/properties. The flywheel is a magnet so I can spin it and precess it with electromagnetic fields. Works great!

But now I am stuck. Imagine that the axis which the flywheel spins on comes into contact with something (a stop). This is done to keep the gyro pitching and yawing within a limited range. What happens when the non-rotating axis touches the stop? How to model? Clearly, if the gyro was precessing (in pitch), then the pitch body rotation will come to a stop. I am looking for a realistic way to model this.

Thanks
 
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