Derivative is used in certain specific applicatiopns, eg boiler freedwater pumps, but generally, yes, avoid.<p>If you want good fast loop performance without overshoot don't forget the posicast.<p>Finally, PID loops are not everything, ask yourself "do I really need a setpoint that is maintained to 1% or better, or do I really just not want to overflow the tank?" If the latter, a ratio control can often be simpler, easier and most noteably not pass on as much process disturbance down the line leading to the plant settling out quicker.
We are making a series of more technical articles with Marple at the moment. This time it was my time to shine!<p>We often see engineers struggle to get some PID controllers working. We know a thing or two about it, so we want to share it with the world! I wrote a short 4 step guide on how I think you can tune a simple PID controller and also shared some thoughts.<p>Let me know what you think :)