State machine help

Question

I want to implement a transition in control strategy for a PMSM based on an external trigger (Like convergence of an estimator).

I believe that the best way to implement this is with a state-machine, where depending on certain triggers it would transition from one type of control to another.

However i can't find an example file to work from as a starting point. (Ideally the oven example that's being talked about in tutorials, but surprisingly hard to locate).

Could someone point me to the right example to serve as a starting point ?

Answer 1

Hi Srinath,

The best way to start learning about the state machine block is following the tutorial here titled "PLECS: Building a Modulator with the Finite State-Machine Block". 

There are a couple of demo models that use the state machine block in the demo model library -- "Buck Converter with Constant On-Time Control" and "Z-Source Inverter".

Also, I attached the oven control example that you mentioned here.

Hope this helps.

Regards,
Manu

Comments

Thanks Manu.

I can use this simple example as a reference. The video on the website, is not that well presented IMO.

It talks too much about buttons and window resizing etc and very little on the topic.

---

Hi Srinath,

Maybe refer to the pdf in that case-- https://www.plexim.com/sites/default/files/tutorials/finite_state_machine.pdf. The files referred in the pdf are in the zip file located on the tutorials page here. 

Regards,
Manu