WOLFRAM SYSTEM MODELER
    relativeRotationReturn relative quaternions orientation object  | 
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SystemModel["Modelica.Mechanics.MultiBody.Frames.Quaternions.relativeRotation"]

This information is part of the Modelica Standard Library maintained by the Modelica Association.
Q_rel = Quaternions.relativeRotation(Q1, Q2);
This function returns quaternions orientation Q_rel that describes the orientation to rotate frame 1 to frame 2 from the quaternions orientation Q1 that describes the orientation to rotate from frame 0 to frame 1 and from the quaternions orientation Q2 that describes the orientation to rotate from frame 0 to frame 2.
Frames.relativeRotation, TransformationMatrices.relativeRotation.
| Q1 | 
         Type: Orientation Description: Quaternions orientation object to rotate frame 0 into frame 1  | 
    
|---|---|
| Q2 | 
         Type: Orientation Description: Quaternions orientation object to rotate frame 0 into frame 2  | 
    
| Q_rel | 
         Type: Orientation Description: Quaternions orientation object to rotate frame 1 into frame 2  | 
    
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