Embedded Software and Motor Control Libraries for PXR40xx

Function GMCLIB_ParkInv_FLT
Equation GMCLIB_ParkInv_Eq2
Note
The inputs and the outputs are normalized to fit in the range [-1,
1).
4.110.5 Re-entrancy
The function is re-entrant.
4.110.6 Code Example
#include "gmclib.h"
SWLIBS_2Syst_F16 tr16Angle;
SWLIBS_2Syst_F16 tr16Dq;
SWLIBS_2Syst_F16 tr16AlBe;
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 d = 0.123
// input q = 0.654
tr16Dq.f16Arg1 = FRAC16 (0.123);
tr16Dq.f16Arg2 = FRAC16 (0.654);
// output should be
// tr16AlBe.f16Arg1 ~ alpha = 0xBF60
// tr16AlBe.f16Arg2 ~ beta = 0x377D
GMCLIB_ParkInv_F16 (&tr16AlBe,&tr16Angle,&tr16Dq);
// output should be
// tr16AlBe.f16Arg1 ~ alpha = 0xBF60
// tr16AlBe.f16Arg2 ~ beta = 0x377D
GMCLIB_ParkInv (&tr16AlBe,&tr16Angle,&tr16Dq,Define F16);
// ##############################################################
// Available only if 16-bit fractional implementation selected
// as default
// ##############################################################
// output should be
// tr16AlBe.f16Arg1 ~ alpha = 0xBF60
// tr16AlBe.f16Arg2 ~ beta = 0x377D
GMCLIB_ParkInv (&tr16AlBe,&tr16Angle,&tr16Dq);
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
496 Freescale Semiconductor, Inc.