fuzzy logic cant display output

[mamprat]

hi everyone i have some question. i want to makes fuzzy logic with "mimo". 3 input data send by arduino serial comuniccation the data can be transmit and can display, but i have some problem with the output. why the result cant display ? the output always "0" what happen for this ? thanks for advance.

[AeroSoul]

Perhaps your fuzzy system is setup wrong, because you are getting an output... it's just 0.

Also if you have 12793 bytes at port when doing a read, chances are you are doing it wrong.

[mamprat]

Is this due to an error input? Or is it because the output is not legible on the device?

[AeroSoul]

Please provide your VI and .fs file you are using for your fuzzy system, it's easier to debug than an image.

[mamprat]

it is vi and .fs file sir

[AeroSoul]

Could you save the VI for LV2019? I can't open it.

[GerdW]

Hi mamprat,

there are several problems in your small VI:

• don't use BytesAtPort to determine the message length! Use a large number istead when you are receiving messages with TermChars!
• don't place an additional wait in parallel to COM port reading: that's the reason you receive that large amount of data when all you expect is one line of text with just 3 numbers…
• I didn't check your fuzzy parameters, but the Fuzzy control outputs just 2 values while you expect to get 3 output values…

Cleanup your code to make it more readable:

[mamprat]

can you try it sir

[mamprat]

i expect it consists of 3 inputs and then it produces 3 outputs too. can it be done sir ?

[AeroSoul]

I checked your fuzzy system a bit... and it works, except that none of the values you feed it are in the range it expects (EDIT: at least not the ones from your first image provided -127 15.25 68.05).

Check if the rules set are correct, because there's one rule that just says "IF THEN" with no inputs or outputs...

Use Test System to check if what you are feeding it actually produces an output you want.

Regarding your code, do what GerdW says.