WM
The WM function returns the magnitude of the angular velocity vector of marker i with respect to marker j. Marker j defaults to the global coordinate system if it is not specified.
Format
WM(i[,j])
Arguments
i | The marker whose velocity is being measured. |
j | The marker with respect to which the velocity is being measured. Set j = 0, while still specifying l, if you want j to default to the global coordinate system. |
Extended Definition
Mathematically, WM is calculated as follows:
where:
■
is the angular velocity vector of marker i in ground.
is the angular velocity vector of marker i in ground.■
is the angular velocity vector of marker j in ground.
is the angular velocity vector of marker j in ground.Examples
MARKER/1236, QP=4,6,7 EU=90D,90D,90D, PART=23
MARKER/2169, PART=16
REQUEST/16
,F1=WM(1236,2169)/
,F2=WX(1236,2169,2169)/
,F3=WY(1236,2169,2169)/
,F4=WZ(1236,2169,2169)
MARKER/2169, PART=16
REQUEST/16
,F1=WM(1236,2169)/
,F2=WX(1236,2169,2169)/
,F3=WY(1236,2169,2169)/
,F4=WZ(1236,2169,2169)
In its first column, REQUEST/16 contains the magnitude of the angular velocity vector of Marker 1236 and Marker 2169.
See other Velocity available.