TMS320F28027F: About FAST forced startup frequency

Hi Team,

Here's an issue from the customer may need your help:

//! \brief Defines the low speed limit for the flux integrator, pu
//! \brief This is the speed range (CW/CCW) at which the ForceAngle object is active, but only if Enabled
//! \brief Outside of this speed - or if Disabled - the ForcAngle will NEVER be active and the angle is provided by FAST only

#define USER_ZEROSPEEDLIMIT (1.0 / USER_IQ_FULL_SCALE_FREQ_Hz) // 0.002 pu, 1-5 Hz typical; Hz = USER_ZEROSPEEDLIMIT * USER_IQ_FULL_SCALE_FREQ_Hz

#define USER_FORCE_ANGLE_FREQ_Hz (2.0 * USER_ZEROSPEEDLIMIT * USER_IQ_FULL_SCALE_FREQ_Hz) // 1.0 Typical force angle start-up speed

I want the startup frequency and time to be adjustable, how should I set it? FAST can do this when the motor is identified. Some motors have relatively large inertia, and I hope to accelerate from 0 to the target frequency within the specified time.

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Thanks & Regards

Yale