First Project - implementing PID

[edashurik]

Hi, i am a new to electronics, and i would like to build my own PID controller

Before i jump into the water i would like to have your opinions on what do you think would be a simple for me to control with the PID controller that i am going to build?
My aim is to make an experiments on a real system, with possible disturbances.

Controlling a voltage across a capacitor
Controlling a temperature (for example of filament lamp or something)
Controlling the position of a motor
Controlling the velocity of a motor
any other suggestions?

thanks

 

[D.A.(Tony)Stewart]

PID is used in simple and complex systems

- like an inverted broom on an RC car or a Robot on a bicycle

- I would start with temperature or Motor Speed control using low power DC.


Learn how Proportional gain affects error with varying loads 0=100%, ramp rates 0 to 100% velocity error and ramp error and overshoot.

Learn how to anticipate feedback to use derivative gain to reduce rate change error or integrated average squared speed error and its affect on noise amplification.

Learn how to zero steady state error with Integral feedback and it's affect on stability with different loads.

Or learn how to auto learn the optimum gain for different motor loads with any motor and load and compute digital gain constants for PID.

 

[edashurik]

thanks.

my final decision is to use the PID for a horizontal pendulum.
i have found a good **broken link removed**.

by looking at the scheme, i do understand how the circuit works, but my question is why does he takes the derivative of a PV and not the Error itself?