Embedded Software and Motor Control Libraries for PXR40xx

Function GMCLIB_ClarkInv_FLT
Equation GMCLIB_ClarkInv_Eq3
Note
The inputs and the outputs are normalized to fit in the range [-1,
1).
4.98.5 Re-entrancy
The function is re-entrant.
4.98.6 Code Example
~ 0.707106781
0.707106781
#include "gmclib.h"
SWLIBS_2Syst_F16 f16trAlBe;
SWLIBS_3Syst_F16 f16trAbc;
void main(void)
{
// input value
f16trAlBe.f16Arg1 = FRAC16 (0.707106781); // input phase alpha ~ sin(45)
}
f16trAlBe.f16Arg2 = FRAC16 (0.707106781); // input phase beta ~ cos(45) ~
// output should be f16trAbc.f16Arg1 ~ phA = 0x5A82 ~ FRAC16(0.707106781)
// output should be f16trAbc.f16Arg2 ~ phB = 0x2120 ~ FRAC16(0.258819045)
// output should be f16trAbc.f16Arg3 ~ phC = 0x845C ~ FRAC16(-0.965925826)
GMCLIB_ClarkInv_F16 (&f16trAbc,&f16trAlBe);
// output should be f16trAbc.f16Arg1 ~ phA = 0x5A82 ~ FRAC16(0.707106781)
// output should be f16trAbc.f16Arg2 ~ phB = 0x2120 ~ FRAC16(0.258819045)
// output should be f16trAbc.f16Arg3 ~ phC = 0x845C ~ FRAC16(-0.965925826)
GMCLIB_ClarkInv (&f16trAbc,&f16trAlBe,Define F16);
// ##############################################################
// Available only if 16-bit fractional implementation selected
// as default
// ##############################################################
// output should be f16trAbc.f16Arg1 ~ phA = 0x5A82 ~ FRAC16(0.707106781)
// output should be f16trAbc.f16Arg2 ~ phB = 0x2120 ~ FRAC16(0.258819045)
// output should be f16trAbc.f16Arg3 ~ phC = 0x845C ~ FRAC16(-0.965925826)
GMCLIB_ClarkInv (&f16trAbc,&f16trAlBe);
4.99 Function GMCLIB_ClarkInv_FLT
The function implements the inverse Clarke transformation.
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
458 Freescale Semiconductor, Inc.