Collaboration diagram for Vector Inverse Park transform:

Functions
static void	tpt_inv_park_f32 (f32_t pIalpha, f32_t pIbeta, f32_t Id, f32_t Iq, f32_t aSinVal, f32_t aCosVal)
	Floating-point Park transform. More...

static void	tpt_inv_park_q31 (q31_t pIalpha, q31_t pIbeta, q31_t Id, q31_t Iq, q31_t aSinVal, q31_t aCosVal)
	Inverse Park transform for Q31 version. More...

Detailed Description

Inverse Park transform converts the input flux and torque components to two-coordinate vector.

The function operates on a single sample of data and each call to the function returns the processed output. The library provides separate functions for Q31 and floating-point data types.

Algorithm: where pIalpha and pIbeta are the stator vector components, Id and Iq are rotor vector components and cosVal and sinVal are the cosine and sine values of theta (rotor flux position).

Fixed-Point Behavior: Care must be taken when using the Q31 version of the Park transform. In particular, the overflow and saturation behavior of the accumulator used must be considered. Refer to the function specific documentation below for usage guidelines.

Function Documentation

◆ tpt_inv_park_f32()

static void tpt_inv_park_f32	(	f32_t *	pIalpha,
		f32_t *	pIbeta,
		f32_t	Id,
		f32_t	Iq,
		f32_t	aSinVal,
		f32_t	aCosVal
	)

inlinestatic

Floating-point Park transform.

Parameters

[out]	pIalpha	points to output two-phase orthogonal vector axis alpha.
[out]	pIbeta	points to output two-phase orthogonal vector axis beta.
[in]	Id	input coordinate of rotor reference frame d
[in]	Iq	input coordinate of rotor reference frame q
[in]	aSinVal	sine value of rotation angle theta
[in]	aCosVal	cosine value of rotation angle theta

Returns: none

◆ tpt_inv_park_q31()

static void tpt_inv_park_q31	(	q31_t *	pIalpha,
		q31_t *	pIbeta,
		q31_t	Id,
		q31_t	Iq,
		q31_t	aSinVal,
		q31_t	aCosVal
	)