pwm by fuzzy logic

[kemal]

how to make pwm by fuzzy logic, can help me ? because i have project which relate this.....

[mikeporter]

You have a very basic problem in what you want to do in that you are, in a sense, wanting to mix apples and oranges. PWM is a very precise process on the other hand, fuzzy logic is an imprecise statistical process.

Now having sad that you could use fuzzy logic to derive the value you want to transfer using PWM.

MIke,,,

[kemal]

I don't undrestand about your explain.... I want to control heater with fuzzy.

[mikeporter]

In that case you can use fuzzy logic to calculate the heater setpoint - but that is a separate question from how you want to transfer that setpoint to the heater. What you are wanting to do has really three steps:

1. Read the current temp
2. Calculate a new setpoint for the heater
3. Sending that new setpoint to the heater.

A temperature controller simply does those three things over and over again. Note that step 2 can be pretty tricky while steps 1 and 3 are generally pretty easy.

Do you need drivers for generating PWM using a digital output?

Mike...

[kemal]

Yeah. I want to use step 2 and 3. Because output from fuzzy logic will use controlling the heater. I use the heater which voltage ac. Can you help me?

[MehmedERSOY]

 Can you the project more information?

[kemal]

My project is water heater. I use fuzzy logic for control the heater.
I use heater which the voltage ac 220v. Many article I read for control the heater using pwm. I want to mix fuzzy logic with pwm. Output from fuzzy is used bntar the pwm. Can you help me.

[mikeporter]

To learn how to generate a pwm signal, do a search in the examples that ship with LV for "PWM".

There are several examples.

Mike...