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

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SUMMARY

This discussion focuses on modeling a free 2-axis gyro, specifically addressing the challenge of incorporating contact with a stop on the non-rotating axis. Mike successfully created a gyro model that includes classical effects and utilizes a magnetically spun flywheel. The primary concern is how to accurately simulate the dynamics when the gyro's non-rotating axis makes contact with a stop, particularly regarding the cessation of pitch body rotation during precession.

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  • Understanding of gyro dynamics and precession
  • Familiarity with electromagnetic fields and their effects on gyroscopic motion
  • Knowledge of classical mechanics principles related to torque and rotational motion
  • Experience with modeling techniques for dynamic systems
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  • Research advanced gyro modeling techniques using MATLAB or Simulink
  • Explore the effects of disturbance torques on gyro stability
  • Study the principles of contact dynamics in mechanical systems
  • Investigate simulation software that specializes in rotational dynamics, such as Adams or SolidWorks Motion
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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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