[time-nuts] Control Systems (was: uC ADC resolution)

Chris Albertson albertson.chris at gmail.com
Sun Jun 11 14:21:15 EDT 2017

On Sun, Jun 11, 2017 at 9:28 AM, Attila Kinali <attila at kinali.ch> wrote:

> Hi,

> You are asking a lot of question regarding control systems.
> But, there are no easy answers there. Especially if you want
> to build it cheap. The cheaper you want to be the more you
> need to know and understand the problem.

This has been my opinion for a LONG time.  It is easy to come up with good
solutions if to just throw money at the problem.    So you see here people
proposing just going top of the line all across but an engineer earns his
by comping up with cost effective solutions that meet all the stated

This is my interest in mechanics too.  Can a $200 3D printed plastic robot
with poor absolute repeatability place an M6 screw into an M6 nut?
not if it runs open loop.  But what if you add visual feedback?
Yes everything requires more expertise if you reduce the budget

So you understand my questions are all like this:  "If you back down from
top of the line solution how does that effect real world performance?"
No one answers.

> I suggest you reading an introductory text into control systems
> like e.g. "Feedback Control of Dynamic Systems", by Franklin, Powell,
> Emami-Naeini.


Chris Albertson
Redondo Beach, California

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