Embedded Software and Motor Control Libraries for PXR40xx

Function GMCLIB_ParkInv_F32
Equation GMCLIB_Park_Eq2
where θ e represents the electrical position of the rotor flux.
Note
The inputs and the outputs are in single precision floating point
data format.
4.108.5 Re-entrancy
The function is re-entrant.
4.108.6 Code Example
#include "gmclib.h"
SWLIBS_2Syst_FLT trfltAngle;
SWLIBS_2Syst_FLT trfltAlBe;
SWLIBS_2Syst_FLT trfltDq;
void main(void)
{
// input angle sin(60) = 0.866025403
// input angle cos(60) = 0.5
trfltAngle.fltArg1 = 0.866025403;
trfltAngle.fltArg2 = 0.5;
}
// input alpha = 0.123
// input beta = 0.654
trfltAlBe.fltArg1 = 0.123;
trfltAlBe.fltArg2 = 0.654;
// output should be:
// trfltDq.fltArg1 ~ d = 0.627880613
// trfltDq.fltArg2 ~ q = 0.220479472
GMCLIB_Park_FLT (&trfltDq,&trfltAngle,&trfltAlBe);
// output should be:
// trfltDq.fltArg1 ~ d = 0.627880613
// trfltDq.fltArg2 ~ q = 0.220479472
GMCLIB_Park (&trfltDq,&trfltAngle,&trfltAlBe,Define FLT);
// ##############################################################
// Available only if single precision floating point
// implementation selected as default
// ##############################################################
// output should be:
// trfltDq.fltArg1 ~ d = 0.627880613
// trfltDq.fltArg2 ~ q = 0.220479472
GMCLIB_Park (&trfltDq,&trfltAngle,&trfltAlBe);
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
492 Freescale Semiconductor, Inc.