TMS320F28069F: [TMS320F28069F] How to bypass the traj_spd module?

Hello! I'm trying to debug my own speed controller, and  I would like to understand a couple of things.

1, The spd_ref was updated in CTRL_setup() which call CTRL_runTraj(), the target value is the speed reference？Am i right?

2, How can i bypass the traj ramp module which generate the actual speed reference of speed pi controller?

3,

// when appropriate, run the PID speed controller
if(CTRL_doSpeedCtrl(handle))
{
_iq refValue = TRAJ_getIntValue(obj->trajHandle_spd); //////////////////////////////////

//! \return    The mechanical frequency, pu
_iq fbackValue = EST_getFm_pu(obj->estHandle);

My question is :  What's the relationship between krmp and the mechanical frequency pu?

4,

//! \brief Sets the output speed reference value in the controller
//! \param[in] handle The controller (CTRL) handle
//! \param[in] speed_ref_pu The output speed reference value, pu
static inline void CTRL_setSpeed_ref_pu(CTRL_Handle handle,const _iq speed_ref_pu)
{
CTRL_Obj *obj = (CTRL_Obj *)handle;

obj->speed_ref_pu = speed_ref_pu;

return;
} // end of CTRL_setSpeed_ref_pu() function

Does speed _ref_pu mean the mechanical frequency pu?

Thanks a lot !