Welcome to Adams/Solver Subroutines - Kxcad.net

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Adams/Solver
Output Arguments
coord2 An array containing the converted coordinates. Angles are output in radians.
istat An integer variable indicating the unqualified success, the qualified success,
or the reason for the failure of the call to RCNVRT. The values for istat are
as follows:
Extended Definition
If: Then:
istat= 0 The call to RCNVRT was successful without
qualifications.
istat> 0 The call to RCNVRT was successful, but there are
nonfatal errors in the input supplied.
istat= +1 The sum of the squares of the Euler parameters is
close to (within 0.5), but not exactly, 1.0.
istat= +2 The sum of the squares of a column of the direction
cosines is close to (within 0.5), but not exactly, 1.0.
istat< 0 The call to RCNVRT was not successful because
there are fatal errors in the input supplied.
istat= -1 The coordinate system for sys1 was not correctly
specified.
istat= -2 The coordinate system for sys2 was not correctly
specified.
istat= -3 The absolute value of an Euler parameter is greater
than 1.5 (Adams/Solver gives 0.5 tolerance).
istat= -4 The sum of the squares of the Euler parameters is not
within 0.5 of 1.0.
istat= -5 The sum of the squares of a column of the direction
cosines is not within 0.5 of 1.0.
istat= -6 The input direction cosine matrix is not orthogonal;
that is, the dot product of any two columns is greater
than 0.5.
istat= -7 The input direction cosine matrix is for left-handed,
In Adams/Solver, rotational coordinates are often used to specify the orientation of a coordinate system.
For example, a DIFSUB, a REQSUB, or an SFOSUB can call RCNVRT to change Euler angles to Euler
parameters.
Euler parameters are P0, P1, P2, and P3. P0 is the cosine of one-half the angle of rotation of the rotated
frame with respect to the reference frame. P1, P2, and P3 are the x, y, and z components, respectively, of
the unit vector around which the rotation occurs, multiplied by the sine of one-half the angle.