.Modelica.Mechanics.MultiBody.Sensors.Internal.BasicRelativePosition .Modelica.Mechanics.MultiBody.Sensors.Internal.BasicRelativePositionThis basic sensor is aimed to be used within advanced sensors where the relative position vector between the origins of frame_a and frame_b should be determined. This vector is provided at the output signal connector r_rel.
Via parameter resolveInFrame it is defined in which frame the position vector is resolved:
| resolveInFrame = Types.ResolveInFrameAB. |
Meaning |
|---|---|
| world | Resolve vector in world frame |
| frame_a | Resolve vector in frame_a |
| frame_b | Resolve vector in frame_b |
| frame_resolve | Resolve vector in frame_resolve |
In this basic sensor model, the connector frame_resolve is always enabled and must be connected. If resolveInFrame = Types.ResolveInFrameAB.frame_resolve, the vector r_rel is resolved in the frame to which frame_resolve is connected.
If resolveInFrame = Types.ResolveInFrameAB.frame_a, the output vector is computed as:
r_rel = MultiBody.Frames.resolve2(frame_a.R, frame_b.r_0 - frame_a.r_0);