CCS: Level4 pi_spd.Ref = ?

Tool/software: Code Composer Studio

if (SpeedLoopCount==SpeedLoopPrescaler)
{
pi_spd.Ref = rc1.SetpointValue;
// pi_spd.Ref = SpeedRef;
pi_spd.Fbk = speed1.Speed;
PI_MACRO(pi_spd);
SpeedLoopCount=1;
}

Why the original program:pi_spd.Ref = rc1.SetpointValue ? In the control diagram. We can see that the input of pid_spd.Ref is SpeedRef?

So, which one should I choose?

over 5 years ago

0 Devin Cottier over 5 years ago

TI__Guru 60865 points

Hi '9132,

What kit or EVM are you using?

0 Yanming Luo over 5 years ago in reply to Devin Cottier

TI__Guru** 115400 points

The final target reference speed is SpeedRef, but in a real case, you have to add a ramp control to increase the reference speed from zero to the target value as done in the example project.

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CCS: Level4 pi_spd.Ref = ?