How many of you know Laplace transforms?

[PNachtwey]

Why do I ask?
I was on a Chinese hydraulic servo forum. There is an on going dispute about different kinds of servo control. The problem I have is that no one understands Laplace transforms.
I can show the relative strengths of PID, PD, PI and P only control using Laplace transforms but no one seems to understand Laplace transforms, transfer functions, time constants and bandwidth. A common problem we have in China, and even the EU, is that people not aware of even the basics of how to control a hydraulic servo system or to select cylinder diameter and valve size.

A second question.
Many of you know that I write magazine articles related to hydraulic servo control. Are there any topics you would like me to cover?


Peter Nachtwey
Delta Computer Systems

http://www.deltamotion.com

http://forum.deltamotion.com/

 

[ndzied1]

So I googled laplase transform and this is the first thing that pops up. Apparently, if you have Amazon Prime, you can get Laplase Transforms shipped to you free in 2 days.

 

[chicopee]

I don't have the time to study your link

http://deltamotion.com/peter/Mathcad/Mathcad -%2...that

you provided however, you should try to get a copy of Unitech "Outline of Servo-mechanisms" by Sidney A. Davis, copyright 1966 and distribute this reference to your clients. There will be explanations of all the symbols presented in your link. I would not be surprised if many of the equations presented in your link may not have been copied or derived from the reference that I mentioned.