PID with controlled ramp Options

[Ela23]

Thanks GerdW

these are Fig 1 & Fig 2 in PNG format.

the linearity is bad when i try to repeat experiment. 😞

[GerdW]

Hi Ela,

the linearity is bad when i try to repeat experiment.

As we don't know anything ybout your setup nor do we know the measurement values, so we cannot comment on those curves…

Did you change anything in your VI according to my recommendations?

[Ela23]

Which information do you need about my setup ?

now I am working to change the code based on your comments and I will try to reapet the experiment again .

[Ela23]

Dear GerdW

i did some changes in AI but the programme doesn't work i mean the temperature is 0 all the time .

please make right setting on DAQmx Read for me if you think something in rung or unnecessary please modify that

many thanks .

[GerdW]

Hi Ela,

i did some changes in AI but the programme doesn't work i mean the temperature is 0 all the time .

Did you also debug your VI?

Did you check the error outputs of all DAQmx functions?

- Why do you configure a sample rate of 1000Hz, when you read just one sample per DAQmxRead? With a timeout of 1000s?

- Why do you read this one sample as waveform when you want to work with a scalar value?

- Why do you need an ExpressVI for such a simple calculation?

- Why do you configure "buffer size" at DAQmxTiming in "continuous" mode? Did you read the help for that input?