WOLFRAM SYSTEM MODELER
    angularVelocity1Compute angular velocity resolved in frame 1 from quaternions orientation object and its derivative  | 
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SystemModel["Modelica.Mechanics.MultiBody.Frames.Quaternions.angularVelocity1"]

This information is part of the Modelica Standard Library maintained by the Modelica Association.
w = Quaternions.angularVelocity1(Q, der_Q);
This function returns the angular velocity w of frame 2 with respect to frame 1, resolved in frame 1, from the quaternions orientation Q that describes the orientation to rotate frame 1 into frame 2 and from its first time derivative der_Q.
Frames.angularVelocity1, TransformationMatrices.angularVelocity1.
| Q | 
         Type: Orientation Description: Quaternions orientation object to rotate frame 1 into frame 2  | 
    
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| der_Q | 
         Type: der_Orientation (1/s) Description: Derivative of Q  | 
    
| w | 
         Type: AngularVelocity[3] (rad/s) Description: Angular velocity of frame 2 with respect to frame 1 resolved in frame 1  | 
    
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