Pid without Toolkit

[ufo900]

i solved it in another way..

another question:

i need to make a sort of pid NOT realtime.. i explain this:

if I put a sine wave with frequency 1Hz i need the system to try to follow the wave..

sometimes it does not (the system is late with high frequency) but i need that the system follows the sine wave anyway..

how can i do that?

Example:

sine wave(0s)=0

temperature wave(os)=0 (OK)

sine wave (1s)=1

temperature wave(1s)=0,95 (acceptable)

sine wave(2s)=2

temperature wave(2s)=1,7 (not acceptable)

every value after 2sec is late. So when sine wave reaches the maximun value (example 5 for 5sec) the temperature wave is lower that 5 (example 4.5).

The sine wave is now going down but the temperature wave still going up: the temperature doesn't reach the value 5 because when it is 4.85 the sine wave is going down and so the temperature has to follow the sine wave.

At the end i have the sine wave as a sine wave (obvious) but the temperature wave as a triangle wave.

How can i force the temperature to follow the sine wave, without thinking about its late?

Thank you