在TIcontrolsuit的PMSM:FCO Sensored Servo给的参考例程里面，clark的定义和经典的变换错了一个系数sqrt(3/2),请说明原因。
TI例程如下：
#ifndef __CLARKE_H__
#define __CLARKE_H__
typedef struct { _iq As; // Input: phase-a stator variable
_iq Bs; // Input: phase-b stator variable
_iq Cs; // Input: phase-c stator variable
_iq Alpha; // Output: stationary d-axis stator variable
_iq Beta; // Output: stationary q-axis stator variable
} CLARKE;
/*-----------------------------------------------------------------------------
Default initalizer for the CLARKE object.
-----------------------------------------------------------------------------*/
#define CLARKE_DEFAULTS { 0, \
0, \
0, \
0, \
0, \
}
/*------------------------------------------------------------------------------
CLARKE Transformation Macro Definition
------------------------------------------------------------------------------*/
// 1/sqrt(3) = 0.57735026918963
#define ONEbySQRT3 0.57735026918963 /* 1/sqrt(3) */
// Clarke transform macro (with 2 currents)
//==========================================
#define CLARKE_MACRO(v) \
v.Alpha = v.As; \
v.Beta = _IQmpy((v.As +_IQmpy2(v.Bs)),_IQ(ONEbySQRT3));
// Clarke transform macro (with 3 currents)
//==========================================
#define CLARKE1_MACRO(v) \
v.Alpha = v.As; \
v.Beta = _IQmpy((v.Bs - v.Cs),_IQ(ONEbySQRT3));
#endif // __CLARKE_H__
