Converting PLC ladder in Fuzzy Logic - PLCS.net

chico · October 15th, 2003, 06:13 AM

Hi folks !!

I need to convert my fuzzy logic into PLC ladder and vice-versa.

Does somebody knows how can i do that ???

Thanks.

Francisco

PLucas · October 15th, 2003, 06:53 AM

Chico

First of all I would like to state here and now that:-

(Stands up and places left hand on bible and right hand on heart )

I, PLucas, do hereby declare that what I know about Fuzzy Logic you could write on the back of a postage stamp in block capitals and still leave room for the Lords prayer

(Sits back down )

As as far as I am concerned ladder logic deals with 1's and 0's, on's and off's, true and false, black and white (forgetting analogue I/O here), where as fuzzy logic can deal with all the different shades of grey between black and white, so will they convert from one to the other?

I don't think I can answer that, I am sure Tery Woods can and probably will, so it's over to you Terry and any others who can either back me up on this OR put me right!

Paul

KEN_KACEL · October 15th, 2003, 08:45 AM

Way back in time I took some canned code from a Mitsu rep that had done the fuzzy algorithm and we put it in a melsec/FX it worked and well. The only problem I had was the sample time was to slow for my application. It actually was on a production injection molder. I had to reverse engineer the code to get a good understanding to work it into my application it had 8 loops , it was like holding a book in the mirror upside down and in foreign language with the lights out. But I finally got it. I could dig it up if you would like, its high level mitsubishi instructions. It was by a brilliant individual, Mark Jones, who I take my hat off to ..... Hope he still is in industry.

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"When are the Golden Globe awards handed out for most outstanding PLC programmer? I would nominate this guy."
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PLucas · October 15th, 2003, 10:05 AM

Quote:

Originally posted by PLucas

I am sure Tery Woods can and probably will,

Terry

My apologies for spelling your name wrong

I didn't spot it until the '60 minutes' edit time had expired.

Please forgive me

Paul

shooter · October 16th, 2003, 04:34 PM

yes both ways is no big problemjust give me programs and will convert them for you wihile i am at sea.
however the level is not 8 but only 4 normal this is enough.
fuzzy to ladder will simplify
ladder to fuzzy is not practicle as it is only overdone.

wilheldp · October 17th, 2003, 07:43 AM

Shooter,

I've been through Tenbosch! My parents lived in Tilburg for 5 months a couple of years ago, and when I went to visit them they took me up to 's-Hertogenbosch for a little tour. Plus, everywhere we went by train had to stop there.

Sorry about the non-PLC related post...I just got excited when I saw somebody from a town in Holland that I had visited.

October 15th, 2003, 06:13 AM	#1
chico Member Join Date: Aug 2003 Location: Sao Paulo Posts: 5	Converting PLC ladder in Fuzzy Logic Hi folks !! I need to convert my fuzzy logic into PLC ladder and vice-versa. Does somebody knows how can i do that ??? Thanks. Francisco __________________ Regards, Francisco

October 15th, 2003, 06:53 AM	#2
PLucas Member Join Date: Apr 2002 Location: Gillingham Kent Posts: 1,737	Chico First of all I would like to state here and now that:- (Stands up and places left hand on bible and right hand on heart ) I, PLucas, do hereby declare that what I know about Fuzzy Logic you could write on the back of a postage stamp in block capitals and still leave room for the Lords prayer (Sits back down ) As as far as I am concerned ladder logic deals with 1's and 0's, on's and off's, true and false, black and white (forgetting analogue I/O here), where as fuzzy logic can deal with all the different shades of grey between black and white, so will they convert from one to the other? I don't think I can answer that, I am sure Tery Woods can and probably will, so it's over to you Terry and any others who can either back me up on this OR put me right! Paul __________________ There are 10 types of people in this world.. Those who understand binary and those who don't!

October 16th, 2003, 04:34 PM	#5
shooter Member Join Date: Sep 2002 Location: duketown Posts: 352	yes both ways is no big problemjust give me programs and will convert them for you wihile i am at sea. however the level is not 8 but only 4 normal this is enough. fuzzy to ladder will simplify ladder to fuzzy is not practicle as it is only overdone. __________________ shooter@home.nl Computer Shooter Paul Deelen J. Wassenaerstraat 29 NL 5224 GG 's-Hertogenbosch +31653300739

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October 15th, 2003, 08:45 AM	#3
KEN_KACEL Member Join Date: Nov 2002 Location: NORTH COUNTRY Posts: 106	Way back in time I took some canned code from a Mitsu rep that had done the fuzzy algorithm and we put it in a melsec/FX it worked and well. The only problem I had was the sample time was to slow for my application. It actually was on a production injection molder. I had to reverse engineer the code to get a good understanding to work it into my application it had 8 loops , it was like holding a book in the mirror upside down and in foreign language with the lights out. But I finally got it. I could dig it up if you would like, its high level mitsubishi instructions. It was by a brilliant individual, Mark Jones, who I take my hat off to ..... Hope he still is in industry. ------------------------------------------------------------------- "When are the Golden Globe awards handed out for most outstanding PLC programmer? I would nominate this guy." -------------------------------------------------------------------

October 17th, 2003, 07:43 AM	#6
wilheldp Member Join Date: Oct 2003 Posts: 90	Shooter, I've been through Tenbosch! My parents lived in Tilburg for 5 months a couple of years ago, and when I went to visit them they took me up to 's-Hertogenbosch for a little tour. Plus, everywhere we went by train had to stop there. Sorry about the non-PLC related post...I just got excited when I saw somebody from a town in Holland that I had visited.

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