Embedded Software and Motor Control Libraries for PXR40xx

Function GMCLIB_ParkInv_F16
Equation GMCLIB_ParkInv_Eq2
Note
The inputs and the outputs are normalized to fit in the range [-1,
1).
4.109.5 Re-entrancy
The function is re-entrant.
4.109.6 Code Example
#include "gmclib.h"
SWLIBS_2Syst_F32 tr32Angle;
SWLIBS_2Syst_F32 tr32Dq;
SWLIBS_2Syst_F32 tr32AlBe;
void main(void)
{
// input angle sin(60) = 0.866025403
// input angle cos(60) = 0.5
tr32Angle.f32Arg1 = FRAC32 (0.866025403);
tr32Angle.f32Arg2 = FRAC32 (0.5);
}
// input d = 0.123
// input q = 0.654
tr32Dq.f32Arg1 = FRAC32 (0.123);
tr32Dq.f32Arg2 = FRAC32 (0.654);
// output should be
// tr32AlBe.f32Arg1 ~ alpha = 0xBF601273
// tr32AlBe.f32Arg2 ~ beta = 0x377D9EE4
GMCLIB_ParkInv_F32 (&tr32AlBe,&tr32Angle,&tr32Dq);
// output should be
// tr32AlBe.f32Arg1 ~ alpha = 0xBF601273
// tr32AlBe.f32Arg2 ~ beta = 0x377D9EE4
GMCLIB_ParkInv (&tr32AlBe,&tr32Angle,&tr32Dq,Define F32);
// ##############################################################
// Available only if 32-bit fractional implementation selected
// as default
// ##############################################################
// output should be
// tr32AlBe.f32Arg1 ~ alpha = 0xBF601273
// tr32AlBe.f32Arg2 ~ beta = 0x377D9EE4
GMCLIB_ParkInv (&tr32AlBe,&tr32Angle,&tr32Dq);
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
494 Freescale Semiconductor, Inc.