Can anyone guide me where I can study how to construct a analog PID circuit practically to control a dc motor?
thanks a lot, have a good study.

serdar

 

Use an operational amp with input resistor R and capacitor feedack C. The capactive reactance divided by R is the I (Integral) gain. Now put another resistor R in series with the capacitor. At frequencies above where the capactive reactance equals R, you will have a gain of 1. That is the proportional part (P). Now put another capacitor C2 in parallel with the input resistor. At frequencies above where C2 equals R, it will act as a differentiator (D). The PID Bode diagram will show an
integrator at low frequencies, a proportional at middle frequencies, and a differentiator at high frequencies.

I can snail mail a booklet that contains the PID Bode diagram plus other basic servo info, if interested. No charge for the booklet, but will need address and company affiliation.

Tom

Thomas B. Bullock, President
Industrial Controls Consulting Div.
Bull's Eye Marketing, Inc.
104 S. Main St., Suite 320
Fond du Lac, WI 54935
Ph: 920: 929-6544
Fax: 920: 929-9344
E-mail: [email protected]

 

Thanks Mr. Bullock

adress: Eastern Mediterranean University,
Famagusta Cyprus via Mersin-10, Turkey