Embedded Software and Motor Control Libraries for PXR40xx

Function GMCLIB_Park_FLT
Equation GMCLIB_Park_Eq2
where θ e represents the electrical position of the rotor flux.
Note
The inputs and the outputs are normalized to fit in the range [-1,
1).
4.107.5 Re-entrancy
The function is re-entrant.
4.107.6 Code Example
#include "gmclib.h"
SWLIBS_2Syst_F16 tr16Angle;
SWLIBS_2Syst_F16 tr16AlBe;
SWLIBS_2Syst_F16 tr16Dq;
void main(void)
{
// input angle sin(60) = 0.866025403
// input angle cos(60) = 0.5
tr16Angle.f16Arg1 = FRAC16 (0.866025403);
tr16Angle.f16Arg2 = FRAC16 (0.5);
}
// input alpha = 0.123
// input beta = 0.654
tr16AlBe.f16Arg1 = FRAC16 (0.123);
tr16AlBe.f16Arg2 = FRAC16 (0.654);
// output should be
// tr16Dq.f16Arg1 ~ d = 0x505E
// tr16Dq.f16Arg2 ~ q = 0x1C38
GMCLIB_Park_F16 (&tr16Dq,&tr16Angle,&tr16AlBe);
// output should be
// tr16Dq.f16Arg1 ~ d = 0x505E
// tr16Dq.f16Arg2 ~ q = 0x1C38
GMCLIB_Park (&tr16Dq,&tr16Angle,&tr16AlBe,Define F16);
// ##############################################################
// Available only if 16-bit fractional implementation selected
// as default
// ##############################################################
// output should be
// tr16Dq.f16Arg1 ~ d = 0x505E
// tr16Dq.f16Arg2 ~ q = 0x1C38
GMCLIB_Park (&tr16Dq,&tr16Angle,&tr16AlBe);
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
490 Freescale Semiconductor, Inc.