i want to control the PWM output by using the PID controller. after searching from google, i still got no idea in how to do it. how can i link the PWM output data from arduino to the matlab?
Serial over USB?
yes, i am using arduino uno
No, serial over USB is how you're going to interface Matlab with your Arduino.
sorry for my misunderstanding, what i want to ask is how to get the three Tuning Parameters.
A sophisticated procedure called "trial and error".